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• line 556, column 2: Missing atom:link with rel="self" [help]

    </channel>
    ^

Source: http://www.openstreetmap.org/diary/rss

1. <?xml version="1.0" encoding="UTF-8"?>
2. <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#" xmlns:georss="http://www.georss.org/georss">
3.  <channel>
4.    <title>OpenStreetMap diary entries</title>
5.    <description>Recent diary entries from users of OpenStreetMap</description>
6.    <link>http://www.openstreetmap.org/diary</link>
7.    <image>
8.      <url>http://www.openstreetmap.org/assets/mag_map-rss2.0-0f5c83e82b8170eeee9a6782160ddff8a7f8bfd6c994265658e556e6a8358e69.png</url>
9.      <title>OpenStreetMap diary entries</title>
10.      <width>100</width>
11.      <height>100</height>
12.      <link>http://www.openstreetmap.org/diary</link>
13.    </image>
14.    <item>
15.      <title>Con Mapillary de 0 a 4.646 M.S.N.M.</title>
16.      <link>http://www.openstreetmap.org/user/kaxtillo/diary/41798</link>
17.      <guid>http://www.openstreetmap.org/user/kaxtillo/diary/41798</guid>
18.      <description>&lt;p&gt;Han pasado 2 años desde que comencé a utilizar la aplicación y recorriendo mi historial encuentro con agrado grandes aventuras almacenadas en las imágenes de mis viajes, &lt;a href="http://mapillary.com/map/im/VlaEaLaVe7WblH6Q98mmWw/photo" rel="nofollow"&gt;la ruta por el macizo&lt;/a&gt;, &lt;a href="http://mapillary.com/map/im/bVl-pVyPXIJgaNLLLwCjGA/photo" rel="nofollow"&gt;el recorrido del pacífico&lt;/a&gt;, &lt;a href="http://mapillary.com/map/im/_hv0SuvhARAfram7VE8NWw/photo" rel="nofollow"&gt;la caminata del Puracé&lt;/a&gt; y &lt;a href="http://mapillary.com/map/im/wyaIMscqqE-WV1FWbSeHmQ/photo" rel="nofollow"&gt;el recorrido del piedemonte amazónico&lt;/a&gt;, entre muchos otros son algunos de los viajes registrados por el extenso departamento del Cauca en Colombia. Igualmente la satisfacción del deber cumplido al utilizar la aplicación en contextos humanitarios como los ejercicios en las emergencias de &lt;a href="https://www.mapillary.com/map/im/COs0YUNUxqPij55hKmn4sA" rel="nofollow"&gt;Salgar, Antioquia&lt;/a&gt; y &lt;a href="https://www.mapillary.com/map/im/GAOLc3YQFKQbL8yJ82QDig" rel="nofollow"&gt;Mocoa, Putumayo&lt;/a&gt;. Intentando al igual hacer crecer la comunidad con la iniciativa &lt;a href="http://www.openstreetmap.org/user/kaxtillo/diary/40741" rel="nofollow"&gt;#ScoutMappers&lt;/a&gt; adelantada con la asociación de Scouts de Colombia.
19. Una experiencia personal que resume mis pasos transitador desde los 0 hasta los 4.646 M.S.N.M en mas de 183.425 imágenes, tomadas a lo largo de 2.008.599 metros.</p>
20. </description>
21.      <dc:creator>kaxtillo</dc:creator>
22.      <pubDate>Mon, 26 Jun 2017 18:20:46 +0000</pubDate>
23.      <comments>http://www.openstreetmap.org/user/kaxtillo/diary/41798#comments</comments>
24.    </item>
25.    <item>
26.      <title>用NCDR的避難場所資料，補充林口一帶缺失的學校</title>
27.      <link>http://www.openstreetmap.org/user/Supaplex/diary/41797</link>
28.      <guid>http://www.openstreetmap.org/user/Supaplex/diary/41797</guid>
29.      <description>&lt;p&gt;NCDR 手上有相當詳盡的災難時候避難場所資料，其中為數不少是學校。因此可以利用避難場的清單，挑出學校，然後在 OSM 上面對照是否已經繪製學校了，假若沒有則可以補充資料。NCDR 資料相比 GNS 中學校資料豐富太多了。&lt;/p&gt;
30.  
31. <pre><code>/*
32. This has been generated by the overpass-turbo wizard.
33. The original search was:
34. “emergency=access_point and name~"國小|國中|高中"”
35. */
36. [out:xml]/*fixed by auto repair*/[timeout:225];
37. // gather results
38. (
39.  // query part for: “emergency=assembly_point and name~/國小|國中/”
40.  node["emergency"="assembly_point"]["name"~"國小|國中|高中"]({{bbox}});
41.  way["emergency"="assembly_point"]["name"~"國小|國中|高中"]({{bbox}});
42.  relation["emergency"="assembly_point"]["name"~"國小|國中|高中"]({{bbox}});
43.  node["amenity"="school"]({{bbox}});
44.  way["amenity"="school"]({{bbox}});
45.  relation["amenity"="school"]({{bbox}});
46. );
47. // print results
48. out meta;/*fixed by auto repair*/
49. >;
50. out meta qt;/*fixed by auto repair*/
51. </code></pre>
52.  
53. <p><a href="http://overpass-turbo.eu/s/q0U" rel="nofollow">OverPass Turbo連結</a></p>
54. </description>
55.      <dc:creator>Supaplex</dc:creator>
56.      <pubDate>Mon, 26 Jun 2017 17:34:43 +0000</pubDate>
57.      <comments>http://www.openstreetmap.org/user/Supaplex/diary/41797#comments</comments>
58.      <geo:lat>25.1078238336672</geo:lat>
59.      <geo:long>121.360902786255</geo:long>
60.      <georss:point>25.1078238336672 121.360902786255</georss:point>
61.    </item>
62.    <item>
63.      <title>Utilização do OSM pela Polícia Militar de Santa Catarina</title>
64.      <link>http://www.openstreetmap.org/user/Cladimir%20Luis%20Lang/diary/41796</link>
65.      <guid>http://www.openstreetmap.org/user/Cladimir%20Luis%20Lang/diary/41796</guid>
66.      <description>&lt;p&gt;Finalmente o OSM passou a ser utilizado pelo sistema de geração de ocorrências da PMSC, em substituição ao Google Maps.
67. De agora em diante ficará mais fácil concertar erros existentes no mapa para uma correta apresentação dos locais de ocorrência, agilizando desta forma o atendimento das mesmas.</p>
68. </description>
69.      <dc:creator>Cladimir Luis Lang</dc:creator>
70.      <pubDate>Mon, 26 Jun 2017 09:32:57 +0000</pubDate>
71.      <comments>http://www.openstreetmap.org/user/Cladimir%20Luis%20Lang/diary/41796#comments</comments>
72.      <geo:lat>-26.4917192219375</geo:lat>
73.      <geo:long>-49.0937215089798</geo:long>
74.      <georss:point>-26.4917192219375 -49.0937215089798</georss:point>
75.    </item>
76.    <item>
77.      <title>uMap: 3D Modelos Digitais de Elevação</title>
78.      <link>http://www.openstreetmap.org/user/smaprs/diary/41795</link>
79.      <guid>http://www.openstreetmap.org/user/smaprs/diary/41795</guid>
80.      <description>&lt;p&gt;Alguns modelos 3D que fiz com QGIS, plugin Qgis2threejs (&lt;a href="https://plugins.qgis.org/plugins/Qgis2threejs/" rel="nofollow"&gt;https://plugins.qgis.org/plugins/Qgis2threejs/&lt;/a&gt;), NASA SRTM,
81. imagens de várias fontes (créditos no modelo e/ou metadados), mais alguns dados do OSM, mapeados no uMap.  </p>
82.  
83. <p>Alguns modelos podem demorar um pouco para carregar (de 6 a 12MB).  </p>
84.  
85. <p><a href="http://umap.openstreetmap.co/m/1095/" rel="nofollow">http://umap.openstreetmap.co/m/1095/</a>  </p>
86.  
87. <p><img src="http://i.imgur.com/BRI40sJ.gif" alt="Alt text"/></p>
88. </description>
89.      <dc:creator>smaprs</dc:creator>
90.      <pubDate>Mon, 26 Jun 2017 02:44:40 +0000</pubDate>
91.      <comments>http://www.openstreetmap.org/user/smaprs/diary/41795#comments</comments>
92.      <geo:lat>0.0</geo:lat>
93.      <geo:long>0.0</geo:long>
94.      <georss:point>0.0 0.0</georss:point>
95.    </item>
96.    <item>
97.      <title>uMap of some 3D Digital Elevation Models</title>
98.      <link>http://www.openstreetmap.org/user/smaprs/diary/41794</link>
99.      <guid>http://www.openstreetmap.org/user/smaprs/diary/41794</guid>
100.      <description>&lt;p&gt;3D Models made with QGIS, plugin Qgis2threejs (&lt;a href="https://plugins.qgis.org/plugins/Qgis2threejs/" rel="nofollow"&gt;https://plugins.qgis.org/plugins/Qgis2threejs/&lt;/a&gt;), NASA SRTM, Images from various sources (credits printed and/or quoted in metadata of each model), some OSM data. And uMap of course.&lt;br/&gt;
101. Some models may take a while to download (6 to 12MB).  </p>
102.  
103. <p><a href="http://umap.openstreetmap.co/m/1095/" rel="nofollow">http://umap.openstreetmap.co/m/1095/</a>  </p>
104.  
105. <p><img src="http://i.imgur.com/BRI40sJ.gif" alt="Alt text"/></p>
106. </description>
107.      <dc:creator>smaprs</dc:creator>
108.      <pubDate>Mon, 26 Jun 2017 02:37:41 +0000</pubDate>
109.      <comments>http://www.openstreetmap.org/user/smaprs/diary/41794#comments</comments>
110.      <geo:lat>0.0</geo:lat>
111.      <geo:long>0.0</geo:long>
112.      <georss:point>0.0 0.0</georss:point>
113.    </item>
114.    <item>
115.      <title>Sync your overpass queries with your osm account</title>
116.      <link>http://www.openstreetmap.org/user/tyr_asd/diary/41793</link>
117.      <guid>http://www.openstreetmap.org/user/tyr_asd/diary/41793</guid>
118.      <description>&lt;p&gt;Brand new on &lt;a href="https://overpass-turbo.eu" rel="nofollow"&gt;overpass-turbo.eu&lt;/a&gt;: In addition to storing queries &lt;em&gt;locally&lt;/em&gt; on your browser, you can now also save your important queries on your OSM account and access them from everywhere. Here&amp;#39;s the new option visible on the save dialog:&lt;/p&gt;
119.  
120. <p><img src="https://wiki.openstreetmap.org/w/images/6/6f/Overpass_turbo_-_save_on_osm.png" alt=""/></p>
121. </description>
122.      <dc:creator>tyr_asd</dc:creator>
123.      <pubDate>Sun, 25 Jun 2017 20:08:18 +0000</pubDate>
124.      <comments>http://www.openstreetmap.org/user/tyr_asd/diary/41793#comments</comments>
125.    </item>
126.    <item>
127.      <title>Import Youbike Station from Taoyuan Open Data Portal</title>
128.      <link>http://www.openstreetmap.org/user/Supaplex/diary/41792</link>
129.      <guid>http://www.openstreetmap.org/user/Supaplex/diary/41792</guid>
130.      <description>&lt;p&gt;Using data item from &lt;a href="http://data.tycg.gov.tw/opendata/datalist/datasetMeta?oid=5ca2bfc7-9ace-4719-88ae-4034b9a5a55c" rel="nofollow"&gt;Taoyuan Open Data Portal&lt;/a&gt;, and merging the existing Youbike station on OpenStreetMap database, I use JOSM check and merge the data, then &lt;a href="http://overpass-turbo.eu/s/pZw" rel="nofollow"&gt;upload in bulk&lt;/a&gt; to OpenStreetMap.&lt;/p&gt;
131.  
132. <p>Taipei City, New Taipei City, Taoyuan City, Taichung City, Tainan City and Kaohsiung City they all put the public bicycle site list on the open data portal. But unfortunately that Hsinchu City data license is vague. The datsset on National Develop Council use the Taiwan Government Open Data License. But on the link to Hsinchu City Open Data portal, the dataset page says it has they on custom license, which doesn't fit to OpenStreetMap license. There are mappers in Hsinchu had add some Youbike site in Hsinchu area.</p>
133.  
134. <pre><code>/*
135. This has been generated by the overpass-turbo wizard.
136. The original search was:
137. “amenity=bicycle_rental in "新竹市"”
138. */
139. [out:json][timeout:25];
140. // fetch area “新竹市” to search in
141. {{geocodeArea:新竹市}}->.searchArea;
142. // gather results
143. (
144.  // query part for: “amenity=bicycle_rental”
145.  node["amenity"="bicycle_rental"]["operator"="新竹市政府"](area.searchArea);
146.  way["amenity"="bicycle_rental"]["operator"="新竹市政府"](area.searchArea);
147.  relation["amenity"="bicycle_rental"]["operator"="新竹市政府"](area.searchArea);
148. );
149. // print results
150. out body;
151. >;
152. out skel qt;
153. {{style:
154.    node,way,relation {
155.        text:name;
156. }
157. }}
158. </code></pre>
159.  
160. <p><a href="http://overpass-turbo.eu/s/pZw" rel="nofollow">OverPass Query Link</a></p>
161. </description>
162.      <dc:creator>Supaplex</dc:creator>
163.      <pubDate>Sun, 25 Jun 2017 19:01:02 +0000</pubDate>
164.      <comments>http://www.openstreetmap.org/user/Supaplex/diary/41792#comments</comments>
165.      <geo:lat>24.9889001928117</geo:lat>
166.      <geo:long>121.309661865234</geo:long>
167.      <georss:point>24.9889001928117 121.309661865234</georss:point>
168.    </item>
169.    <item>
170.      <title>匯入桃園市的Youbike站點</title>
171.      <link>http://www.openstreetmap.org/user/Supaplex/diary/41791</link>
172.      <guid>http://www.openstreetmap.org/user/Supaplex/diary/41791</guid>
173.      <description>&lt;p&gt;依據桃園市Open Data平台的&lt;a href="http://data.tycg.gov.tw/opendata/datalist/datasetMeta?oid=5ca2bfc7-9ace-4719-88ae-4034b9a5a55c" rel="nofollow"&gt;Youbike站點資料集&lt;/a&gt;，與先前已經在OpenStreetMap上面的Youbike站點在JOSM整合後，再整批&lt;a href="http://overpass-turbo.eu/s/pZw" rel="nofollow"&gt;上傳&lt;/a&gt;上去OpenStreetMap上面。&lt;/p&gt;
174.  
175. <p>現在臺北市、新北市、桃園市、臺中市、臺南市、高雄市都有把它們的公共自行車站點資料集放到Open Data平台。而比較麻煩的是新竹，在國發會的Open Data平台標示依政府開放資料授權條款釋出，但連結指向新竹市Open Data平台，新竹市用客製化的授權條款，看來不是那麼合OpenStreetMap的授權條款。現在新竹的站點已經陸陸續續標示上去了。</p>
176.  
177. <pre><code>/*
178. This has been generated by the overpass-turbo wizard.
179. The original search was:
180. “amenity=bicycle_rental in "新竹市"”
181. */
182. [out:json][timeout:25];
183. // fetch area “新竹市” to search in
184. {{geocodeArea:新竹市}}->.searchArea;
185. // gather results
186. (
187.  // query part for: “amenity=bicycle_rental”
188.  node["amenity"="bicycle_rental"]["operator"="新竹市政府"](area.searchArea);
189.  way["amenity"="bicycle_rental"]["operator"="新竹市政府"](area.searchArea);
190.  relation["amenity"="bicycle_rental"]["operator"="新竹市政府"](area.searchArea);
191. );
192. // print results
193. out body;
194. >;
195. out skel qt;
196. {{style:
197.    node,way,relation {
198.        text:name;
199. }
200. }}
201. </code></pre>
202.  
203. <p><a href="http://overpass-turbo.eu/s/pZw" rel="nofollow">OverPass檢索連結</a></p>
204. </description>
205.      <dc:creator>Supaplex</dc:creator>
206.      <pubDate>Sun, 25 Jun 2017 17:27:03 +0000</pubDate>
207.      <comments>http://www.openstreetmap.org/user/Supaplex/diary/41791#comments</comments>
208.      <geo:lat>24.9889001928117</geo:lat>
209.      <geo:long>121.309661865234</geo:long>
210.      <georss:point>24.9889001928117 121.309661865234</georss:point>
211.    </item>
212.    <item>
213.      <title>Pearl River Delta Staion Under Constructure Fix Part II</title>
214.      <link>http://www.openstreetmap.org/user/Supaplex/diary/41790</link>
215.      <guid>http://www.openstreetmap.org/user/Supaplex/diary/41790</guid>
216.      <description>&lt;p&gt;WOW, I can&amp;#39;t even think about I&amp;#39;ll have to do a second fix for the Pearl Delta area. Here is the part II that filter out the station under construction, but labeled as in function. &lt;/p&gt;
217.  
218. <p><a href="http://overpass-turbo.eu/s/pZu" rel="nofollow">OverPass Query</a></p>
219.  
220. <p>OverPass Query Language: </p>
221.  
222. <pre><code>/*
223. This has been generated by the overpass-turbo wizard.
224. The original search was:
225. “railway=station and name~"建设中"”
226. */
227. [out:xml]/*fixed by auto repair*/[timeout:225];
228. // gather results
229. (
230.  // query part for: “railway=station and name~/在建/”
231.  node["railway"="station"]["name"~"建设中"]({{bbox}});
232.  way["railway"="station"]["name"~"建设中"]({{bbox}});
233.  relation["railway"="station"]["name"~"建设中"]({{bbox}});
234. );
235. // print results
236. out meta;/*fixed by auto repair*/
237. >;
238. out meta qt;/*fixed by auto repair*/
239. </code></pre>
240.  
241. <p><a href="https://www.openstreetmap.org/changeset/49775224" rel="nofollow">Changeset</a></p>
242. </description>
243.      <dc:creator>Supaplex</dc:creator>
244.      <pubDate>Sun, 25 Jun 2017 17:05:17 +0000</pubDate>
245.      <comments>http://www.openstreetmap.org/user/Supaplex/diary/41790#comments</comments>
246.      <geo:lat>23.2680104831593</geo:lat>
247.      <geo:long>113.321228027344</geo:long>
248.      <georss:point>23.2680104831593 113.321228027344</georss:point>
249.    </item>
250.    <item>
251.      <title>廣東珠三角一帶的在建車站 Part II</title>
252.      <link>http://www.openstreetmap.org/user/Supaplex/diary/41789</link>
253.      <guid>http://www.openstreetmap.org/user/Supaplex/diary/41789</guid>
254.      <description>&lt;p&gt;想不到還可以有Part II&lt;/p&gt;
255.  
256. <p>這次是name欄位中有「建设中」，因此用Overpass搜尋找到144個站標示為營運中車站，實際上是還在蓋。</p>
257.  
258. <p><a href="http://overpass-turbo.eu/s/pZu" rel="nofollow">OverPass檢索</a></p>
259.  
260. <p>OverPass檢索語言：</p>
261.  
262. <pre><code>/*
263. This has been generated by the overpass-turbo wizard.
264. The original search was:
265. “railway=station and name~"建设中"”
266. */
267. [out:xml]/*fixed by auto repair*/[timeout:225];
268. // gather results
269. (
270.  // query part for: “railway=station and name~/在建/”
271.  node["railway"="station"]["name"~"建设中"]({{bbox}});
272.  way["railway"="station"]["name"~"建设中"]({{bbox}});
273.  relation["railway"="station"]["name"~"建设中"]({{bbox}});
274. );
275. // print results
276. out meta;/*fixed by auto repair*/
277. >;
278. out meta qt;/*fixed by auto repair*/
279. </code></pre>
280.  
281. <p><a href="https://www.openstreetmap.org/changeset/49775224" rel="nofollow">變更集</a></p>
282. </description>
283.      <dc:creator>Supaplex</dc:creator>
284.      <pubDate>Sun, 25 Jun 2017 16:51:18 +0000</pubDate>
285.      <comments>http://www.openstreetmap.org/user/Supaplex/diary/41789#comments</comments>
286.      <geo:lat>23.2680104831593</geo:lat>
287.      <geo:long>113.321228027344</geo:long>
288.      <georss:point>23.2680104831593 113.321228027344</georss:point>
289.    </item>
290.    <item>
291.      <title>Задания</title>
292.      <link>http://www.openstreetmap.org/user/%D0%9C%D0%BE%D0%BA%D1%80%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9F%D0%B0%D0%B2%D0%B5%D0%BB/diary/41788</link>
293.      <guid>http://www.openstreetmap.org/user/%D0%9C%D0%BE%D0%BA%D1%80%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9F%D0%B0%D0%B2%D0%B5%D0%BB/diary/41788</guid>
294.      <description>&lt;p&gt;Исправить и по возможности перевести название улиц:
295. <a href="https://www.openstreetmap.org/search?query=%D0%B2%D1%83%D0%BB.%20%D1%83%D0%BA%D1%80%D0%B0%D1%97%D0%BD%D0%B0" rel="nofollow">https://www.openstreetmap.org/search?query=вул.%20україна</a></p>
296.  
297. <p>Добавить на карте Киева все житловые кварталы</p>
298. </description>
299.      <dc:creator>Мокринский Павел</dc:creator>
300.      <pubDate>Sun, 25 Jun 2017 16:04:11 +0000</pubDate>
301.      <comments>http://www.openstreetmap.org/user/%D0%9C%D0%BE%D0%BA%D1%80%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9F%D0%B0%D0%B2%D0%B5%D0%BB/diary/41788#comments</comments>
302.    </item>
303.    <item>
304.      <title>24/06/2017 Balade à Villebon-sur-Yvette</title>
305.      <link>http://www.openstreetmap.org/user/lucbeaupere/diary/41787</link>
306.      <guid>http://www.openstreetmap.org/user/lucbeaupere/diary/41787</guid>
307.      <description>&lt;ul&gt;
308. <li>Cette randonnée sur <a href="https://www.facebook.com/randonneesyvette/posts/1417963781575025" rel="nofollow">la Page Facebook Randonnées en Yvette</a>. </li>
309. <li>Carte de la randonnée sur <a href="https://www.geoportail.gouv.fr/carte?c=2.2197207944811552,48.69329318665831&z=16&l0=GEOGRAPHICALGRIDSYSTEMS.MAPS.SCAN-EXPRESS.STANDARD:WMTS(1)&l1=ORTHOIMAGERY.ORTHOPHOTOS::GEOPORTAIL:OGC:WMTS(1)&l2=GEOGRAPHICALGRIDSYSTEMS.MAPS.SCAN25TOUR::GEOPORTAIL:OGC:WMTS(1)&l3=OPEN_STREET_MAP::GEOPORTAIL:OGC:WMTS(1)&d4=1473295(1)&permalink=yes" rel="nofollow">Geoportail</a>.</li>
310. <li>4km - 1h11 - Villebon-sur-Yvette - Bois de Gelles - Parcours santé et Réservoir à Courtaboeuf
311. <a href="https://www.openstreetmap.org/user/lucbeaupere/traces/2440394" rel="nofollow">Trace GPS</a>
312. <img src="http://beaupereluc.org/2017gps/DSCN7288.JPG" alt="Bois de Gelles"/>
313. Bois de Gelles
314. <img src="http://beaupereluc.org/2017gps/DSCN7292.JPG" alt="Réservoir JM BRUNEAU"/>
315. Réservoir JM BRUNEAU
316. <img src="http://beaupereluc.org/2017gps/DSCN7293.JPG" alt="Gorges du Ruisseau Vatancul"/>
317. Gorges du Ruisseau Vatancul</li>
318. </ul>
319. </description>
320.      <dc:creator>lucbeaupere</dc:creator>
321.      <pubDate>Sun, 25 Jun 2017 11:54:47 +0000</pubDate>
322.      <comments>http://www.openstreetmap.org/user/lucbeaupere/diary/41787#comments</comments>
323.      <geo:lat>48.6961</geo:lat>
324.      <geo:long>2.22748</geo:long>
325.      <georss:point>48.6961 2.22748</georss:point>
326.    </item>
327.    <item>
328.      <title>What should I do with my GPX files?</title>
329.      <link>http://www.openstreetmap.org/user/michalfabik/diary/41785</link>
330.      <guid>http://www.openstreetmap.org/user/michalfabik/diary/41785</guid>
331.      <description>&lt;p&gt;Inspired by &lt;a href="http://www.openstreetmap.org/user/dval/diary/41753" rel="nofollow"&gt;dval&amp;#39;s diary entry&lt;/a&gt;, I thought I should finally summarize me experience with track recording.  &lt;/p&gt;
332.  
333. <p>I use two setups on three physical devices to record my GPS tracks - my smarthphone and two old smartphones (identical models) that I've dedicated to GPS recording (taken out SIM cards, stripped the software down to bare essentials). My (newer, day-to-day use) smartphone is running the latest version of the <a href="http://code.mendhak.com/gpslogger" rel="nofollow">Mendhak GPS Logger app</a>, while the two older ones are running the most recent version of the same app that still supports Android 2.3.6 (i.e. a pretty old one). I have found that these two setups produce GPX tracks with different DOP values. The newer smartphone running the newer app usually produces tracks with DOP of around 0.4-5, the older smartphones with the older version of the app are a bit higher (DOP ~1.2-8). However, it doesn't seem to depend entirely on the smartphone model because when I was still using the OsmAnd app for GPS tracking on the newer smartphone, the DOP values were a lot higher (~4-15 or thereabouts).  </p>
334.  
335. <p>Every time I return from a trip or a hike, I download the GPX tracks from all three smartphones and in all of them I throw away all points with a negative elevation (<ele> tag)
336. to get rid of complete rubbish. Then, for the newer smartphone, I throw away all poins with HDOP higher than 0.7 and for the older smartphones higher than 1.5. When I say "throw away", I mean that I replace the track points in question (<trkpt> tag) with "</trkseg><trkseg>" so I don't just connect the adjacent points. This way, I get a GPS track full of "holes" but since I'm recording three tracks at the same time and I often record the same trip on multiple occasions, I have a pretty decent coverage of the whole trip, as well as pretty good accuracy, I dare say.  </p>
337.  
338. <p>Now, what do I do with this? I have 360 files so far and JOSM is starting to notice when I display them all at once. Of course, I'm thinking about uploading them to OSM because that way:<br/>
339. - other people could use them<br/>
340. - I would be able to only load the portions of tracks for a particular area, rather than needing to display them all in full in JOSM  </p>
341.  
342. <p>However:<br/>
343. - I don't keep track of where I recorded a particular file and I certainly don't feel like tagging them all for location etc. - the maintenance is tedious enough as it is.<br/>
344. - Many of them are next to useless on their own because they're just a sparsely dispersed points or short dashes - it's only after you combine more of them together that you see something meaningful.<br/>
345. - I don't want to lose the HDOP information - the OSM server strips that, doesn't it?<br/>
346. - I don't want them to get lost in the vast number of other uploaded tracks, many of them low quality.  </p>
347.  
348. <p>Basically, I'm looking for some place whence I could load them into JOSM along with tracks recorded by other people and then filter the lot by HDOP.  </p>
349.  
350. <p>Any ideas?</p>
351. </description>
352.      <dc:creator>michalfabik</dc:creator>
353.      <pubDate>Sun, 25 Jun 2017 10:20:23 +0000</pubDate>
354.      <comments>http://www.openstreetmap.org/user/michalfabik/diary/41785#comments</comments>
355.    </item>
356.    <item>
357.      <title>Разобраться</title>
358.      <link>http://www.openstreetmap.org/user/%D0%9C%D0%BE%D0%BA%D1%80%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9F%D0%B0%D0%B2%D0%B5%D0%BB/diary/41783</link>
359.      <guid>http://www.openstreetmap.org/user/%D0%9C%D0%BE%D0%BA%D1%80%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9F%D0%B0%D0%B2%D0%B5%D0%BB/diary/41783</guid>
360.      <description>&lt;p&gt;Мультиполигон:
361. <a href="https://wiki.openstreetmap.org/wiki/Uk:Relation:multipolygon" rel="nofollow">https://wiki.openstreetmap.org/wiki/Uk:Relation:multipolygon</a></p>
362. </description>
363.      <dc:creator>Мокринский Павел</dc:creator>
364.      <pubDate>Sat, 24 Jun 2017 16:22:42 +0000</pubDate>
365.      <comments>http://www.openstreetmap.org/user/%D0%9C%D0%BE%D0%BA%D1%80%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9F%D0%B0%D0%B2%D0%B5%D0%BB/diary/41783#comments</comments>
366.    </item>
367.    <item>
368.      <title>An Strassen angeklebten landuse entfernen</title>
369.      <link>http://www.openstreetmap.org/user/Skinfaxi/diary/41782</link>
370.      <guid>http://www.openstreetmap.org/user/Skinfaxi/diary/41782</guid>
371.      <description>&lt;p&gt;landuse wie Wald, Acker, Wohngebiete etc. mit Strassen zu &amp;quot;verkleben&amp;quot; erscheint ersteinmal logisch und wird durch die &amp;quot;Fangfunktion&amp;quot; der Editoren wie JOSM und ID auch noch unterstützt, so dass man sich anstrengen muss, dies nicht zu tun.&lt;/p&gt;
372.  
373. <p>Was für eine lückenlose Darstellung von landuse bei Flächen sinnvoll ist (Wald an Acker) macht bei linienförmigen Objekten wie highways (Strassen) und Flüssen / Gräben etc. Ärger - denn es führt nicht selten zu krummen Strassen. State of the art ist es deswegen, die landuse Fläche neben der Strasse enden zu lassen.</p>
374.  
375. <p>Um das zu vermeiden, kann man im Editor JOSM die Fangfunktion auch abschalten in dem man die CTRL (bzw. STRG auf deutschen Tastaturen) Taste gedrückt hält. Nur so gelingt es normalerweise vernünftig, eine Nod nahe an einer Strasse zu sezten, ohne mit der Strasse zu verbinden.</p>
376.  
377. <p>Nun stellt sich - leider - oft die Frage, welche Wege es gibt, die Verkettung von landuse mit linienförmigen Objekten wieder aufzuheben. Soweit ich das sehe, eignet sich dazu fast ausschliesslich der Editor JOSM - allerdings gibt es auch hier keinen einheitlichen Königsweg. Nach einer Frage im <a href="https://forum.openstreetmap.org/viewtopic.php?id=31845&p=1" rel="nofollow">Forum</a> wurden mir verschiedene Möglichkeiten aufgezählt, die ich hier nochmal zusammenfasse: </p>
378.  
379. <ol>
380. <li><p>Die simpelste Methode: Bei gedrückt gehaltener "Shift" Taste wählt man zuerst das landuseobjekt aus, dass man "befreien" möchte und wählt dann die "verklebten" Punkte dazu. Jetzt drückt man einfach  auf die Taste "g" und hat die Punkte ausgewählt, die losgelöst sind und kann diese ganz bequem verschieben.Diese Methode klappt auch andersherum - wenn es nötig ist, die Strasse zu verschieben kann man auch die Strasse auswählen.
381. Der einzige erkennbare Nachteil dieser Methode: Sie funktioniert nicht, wenn man einen "nicht verklebten" Punkt mitauswählt und man erhält dann eine ziemlich umfangreiche Fehlermeldung. Wer sie perfektionieren möchte ändert unter Einstellung - Farbe den Wert für standard.mapcss.node.connection z.B. in ein leuchtendes grün. Dann lässt sich viel besser erkennen, welche Nods eigentlich verklebt sind und welche nicht.</p></li>
382. <li><p>Andre Ideen laufen darauf heraus, eine parallele Kopie des Objektes zu erstellen, dieses zu verkleinern und das alte Objekt zu löschen. Dies geht beispielsweise in dem man das landuseobjekt anklickt und gleichzeitig "shift und P" drückt. Verkleinern kann man in dem man sorgsam zieht, aber nicht schiebt. Nachteil dieser Methode scheint zu sein, dass man damit die History des landuseobjektes kaputt macht.</p></li>
383. <li><p>Dann scheint es noch einige Plugins zu geben - z.B. das plugin „contourmerge“: Hier wird zuerst ein "Hilsweg" gezeichnet, wo die neue landusegrenze verläuft, dann das Plugin angewählt. Nachdem man Anfang und Ende auf beiden Ways markiert hat, kann man den bestehenden Rand auf den Hilfsway ziehen und fallen lassen. Wenn die Referenzpunkte wieder abgewählt sind, kann man im normalen Selektionsmodus den Hilfsway löschen. Ich selbst hab diese Methode als arg umständlich erlebt und sehe den Vorteil des plugins nicht.Ausserdem muss man darauf aufpassen, dass die Laufrichtung der Wege gleiche ist.</p></li>
384. <li><p>Als weitere Alternative gibt es die Möglichkeit mit dem UtilsPlugin2 zu arbeiten, hier zieht man eine neue Linie innerhalb des landuses, markiert die linie und das landuse und drückt "ALT und X" gleichzeitig und erhält auf diese Weie eine zweigeteilte landusefläche, wovon man die eine schmale wieder löschen muss. Meiner Meinung nach umständlicher als die "G - Methode" aber sehr brauchbar, wenn man eh kompliziert geratene Fläche in kleinere zerlegen will.</p></li>
385. </ol>
386.  
387. <p>Ach ja: Da wo es wie gesagt sinnvoll ist (landuse an landuse) kann man die Flächen einfach durch markieren von zwei Nods jeder Fläche und drücken der Taste "M" (für merge) miteinander verbinden. Die Vereinfachung, dass es in Openstreetmap keine Übergänge wie Waldränder etc. gibt, muss man einfach hinnehmen.
388. Ich finde die erste Methode die beste.</p>
389.  
390. <p>Vielen Dank an die Tippgeber!</p>
391. </description>
392.      <dc:creator>Skinfaxi</dc:creator>
393.      <pubDate>Sat, 24 Jun 2017 07:33:59 +0000</pubDate>
394.      <comments>http://www.openstreetmap.org/user/Skinfaxi/diary/41782#comments</comments>
395.    </item>
396.    <item>
397.      <title>New to map tracing</title>
398.      <link>http://www.openstreetmap.org/user/Cuile302/diary/41781</link>
399.      <guid>http://www.openstreetmap.org/user/Cuile302/diary/41781</guid>
400.      <description>&lt;p&gt;Not sure if this is what these journal entries are for, but hello! I&amp;#39;m new to map tracing, having just attended my first mapathon, so if you&amp;#39;re a moderator checking my work then I appreciate any feedback.&lt;/p&gt;
401. </description>
402.      <dc:creator>Cuile302</dc:creator>
403.      <pubDate>Fri, 23 Jun 2017 20:33:04 +0000</pubDate>
404.      <comments>http://www.openstreetmap.org/user/Cuile302/diary/41781#comments</comments>
405.    </item>
406.    <item>
407.      <title>Mapa de Ribeirão Grande - SP</title>
408.      <link>http://www.openstreetmap.org/user/edilqueirozdearaujo/diary/41780</link>
409.      <guid>http://www.openstreetmap.org/user/edilqueirozdearaujo/diary/41780</guid>
410.      <description>&lt;p&gt;O &lt;a href="https://mapaderibeiraograndesp.wordpress.com/2017/06/23/melhorias-no-mapa/" rel="nofollow"&gt;Mapa de Ribeirão Grande&lt;/a&gt; foi feito para ser um mapa que facilite visualizar coisas interessantes e úteis com destaque para o município onde moro. Na sua recente atualização permite comparar o mapeamento de diversas formas e apoiar estudos na região.
411. <a href="https://mapaderibeiraograndesp.wordpress.com/2017/06/23/melhorias-no-mapa/" rel="nofollow"><img src="https://mapaderibeiraograndesp.files.wordpress.com/2017/06/novidades-no-mapa-junho-2017.png" alt="img..."/></a></p>
412. </description>
413.      <dc:creator>edilqueirozdearaujo</dc:creator>
414.      <pubDate>Fri, 23 Jun 2017 19:39:35 +0000</pubDate>
415.      <comments>http://www.openstreetmap.org/user/edilqueirozdearaujo/diary/41780#comments</comments>
416.      <geo:lat>-24.0970340762941</geo:lat>
417.      <geo:long>-48.3656720817089</geo:long>
418.      <georss:point>-24.0970340762941 -48.3656720817089</georss:point>
419.    </item>
420.    <item>
421.      <title>Mapper of the Month: Julien Minet (Belgium)</title>
422.      <link>http://www.openstreetmap.org/user/escada/diary/41779</link>
423.      <guid>http://www.openstreetmap.org/user/escada/diary/41779</guid>
424.      <description>&lt;h2&gt;Please introduce yourself&lt;/h2&gt;
425.  
426. <p>I am Julien Minet. I come from the Luxembourg province in Belgium, from the border between the Ardens and the Gaume. I have a degree as Bio-engineer and worked for 8 years as a researcher at UCL and now ULg - Arlon. At the moment I work in web development, GIS and digital maps.</p>
427.  
428. <p><img src="https://photos.smugmug.com/OSM/Screenshots/Mapper-in-the-Spotlight/Julien-Minet/i-28mFrq5/0/adcba395/O/wallpapermapsmaker_arlon.png" alt="Maps of Arlon"/></p>
429.  
430. <h2>When and how did you discover OpenStreetMap ?</h2>
431.  
432. <p>I heard about OSM quite some time ago, via news sites on mapping and GIS. I started contributing in 2012. I have to admit that I did not believe in the project in the beginning. Due to the empty, white map I was really attracted to contribute. Nevertheless, there were some brave pioneers that started the work and mapped the main roads, the villages, etc.
433. J’ai entendu parler d’OSM assez tôt, par le biais de sites d’infos sur la cartographie et le SIG. Je me suis mis à contribuer en 2012. Au début, je dois dire que je ne croyais pas trop au projet et le fait que la carte était toute blanche dans le sud de la Belgique ne me poussait pas à y contribuer. Puis, de courageux pionniers ont initié le travail en cartographiant les routes principales, les villages, etc.</p>
434.  
435. <h2>How do you map ? Is this different from your early days ?</h2>
436.  
437. <p>I started in 2012, at the moment, several small villages were missing from the map in my neighborhood, which I added since then, as well as some main roads. In the beginning I mapped forestry roads after registering them via GPS traces. Afterwards, I started focussing on points-of-interests, mainly shops, pubs, restaurants, banks, etc. Later on, I moved to mapping the signposted walks in my area. Since a few months,  I  became addicted to map the landuse. The longer one participates in the project, the more subjects one finds to map! I believe it is always a good moment to get engaged in OpenStreetMap, since there is a always a lot of details remaining to be mapped, especially in rural areas.</p>
438.  
439. <p>In the last year, I started to use the error detection tool <a href="http://osmose.openstreetmap.fr" rel="nofollow">Osmose</a> as lot. It is a very good way to learn about the rules, to discover other mappers in "your" area and to discover new features that can be mapped.</p>
440.  
441. <p>Initially I thought that OpenStreetMap was mainly constructed via imports of open data. Later on, I discovered that this was not the case (at least not in Belgium). Since then, I believe in the "craft mapping", mapping of items that one knows or has seen in the real world. Wanting to import open data at all costs, is no longer interesting for me, since 1) in case the data is open, it is available anyhow, 2) official data is not perfect and 3) OpenStreetMap demands some time to be constructed, so let some work to future contributors !</p>
442.  
443. <p>On the other hand, open data can be used in for analysing and validation of our map data, or in some specific cases. For examples, one day I would like to import the traces of the small waterways in Wallonia, because they are often missing in OpenstreetMap and they are difficult to map from aerial images. Since this would require a group of passionate people to follow  the course of the rivers and streams, this seems like an import that is almost useful. Although swimming and walking along the streams is a great activity !</p>
444.  
445. <h2>How do you map ?</h2>
446.  
447. <p>Usually, I map what I know well, and after verifying it on the ground. I do not have a dedicated GPS-device for hiking, I only use my smartphone with the OpenGPSTracker app. I use it for all my outdoor activities, be it on a mountain bike or for walking. The latter happens less and less the past few years. Often, I take pictures of shops, especially of the notes indicating the opening hours and contact information, so I can later on add this information to the map.</p>
448.  
449. <p>Most of my edits where done with ID. I like this editor for its simplicity. I always use it for adding information such as opening hours, contact information, or to repair mistakes indicated by Osmose. Recently, I also started using JOSM for mapping landuse and lancover, using the "<a href="https://wiki.openstreetmap.org/wiki/JOSM/Plugins/ContourMerge" rel="nofollow">contourmerge</a>" plugin, which is a great time saver for this type of mapping. I also use Maps.Me and Vespucci on mobile devices.</p>
450.  
451. <h2>Where do you map ?</h2>
452.  
453. <p>I mainly map what I know well, thus I work in my immediate surroundings and in the places I visit. I am interested in the helping out humanitarian projects such as HOT, but I hesite to start, because I do not know those places. In the beginning, I found some serieus problems in my neighborhood, clearly made by contributors that do not know the area. There has to be people in each region of the world that have an interest in becoming a contributor. Of course, the number of possible contributors interested in the project is alwayls limited, so we have to start with students following geography or IT courses. But we do not have to reach millions of people to get good results. It could be a surprise to see who is interested in the project and contributes to it.
454. I had the possibility to meet some African students of the ULg in Arlon and I tried to introduce them to OpenStreetMap. They are often exited about the project, since it is valuable in areas where no other digital maps exist. So, yes to humanitarian mapping if one does not forget to involve local mappers, all over the world.</p>
455.  
456. <h2>What is your largest achievement so far ?</h2>
457.  
458. <p>I am proud of "my area", roughly described as the Forest of Anlier and Rulles, where I made most of my contributions. I am especially happy with the result, as the official IGN maps of the forests are not always up-to-date. Some paths can disappear rapidly under the vegetation and new ones are created by the exploitation of the forest and by mountain bikers.</p>
459.  
460. <h2>Why do you map ?</h2>
461.  
462. <p>I always loved maps, hiking and outdoor activities. That is what attracts me the most in OpenStreetMap: going out on a bike or by foot and later on edit the map to reflect what you have noticed. I also like the geek aspect, the fact that you have an unbelievable passion to share when you are invited for a dinner on a Wednesday evening.</p>
463.  
464. <h2>What is the most difficult part ?</h2>
465.  
466. <p>To keep the map up to date ! And to find the motivation to update or improve what is already present.</p>
467.  
468. <h2>What are you plans in the near future ?</h2>
469.  
470. <p>I talked about that on my <a href="http://www.nobohan.be/2017/01/22/mes-envies-openstreetmap-en-2017/" rel="nofollow">blog</a>, mainly the landuse and the sign posted hikes. And why not, mapping the small streams ?</p>
471.  
472. <h2>Do you  have contact with other mappers ?</h2>
473.  
474. <p>I am subscribed to the talk-be mailing list. One warning: this list generates a lot of emails, so set up your mail program to keep them in a separate, dedicated folder. I only visited a few face-to-face meetings, as they are rarely organised in Wallonia. By accident, I met Julien Fastré during one of them and we have met a few times since then. I initiated some people around me to contribute, but they only do this from time to time.
475. And at the State of the Map in Brussels in 2016, I finally met some of the legends of the Belgian community! I think this was the best day of my live ! :-)</p>
476.  
477. <h2>Do you use OpenStreetMap yourself ?</h2>
478.  
479. <p>I use OpenStreetMap on my smartphone, via the OsmAnd and Maps.me apps. Having the map available offline, is always useful. I also use it to calculate routes. And finally I use it in my activaty as GIS consultant: either as background map or as data source.</p>
480.  
481. <h2>Are there other things you do that are related to OpenStreetMap?</h2>
482.  
483. <p>I made OpenStreetMap part of my jobs. A project that I would like to develop further is a map of businesses and services in rural areas. A map, where one can rapidly find the opening hours and phone numbers. I have developed <a href="http://www.nobohan.be/webmaps/Marbehan/map_zoom.html" rel="nofollow">a prototype for my village</a>, and I use it often to see whether a shop is open. I would like to present it to other villages and collaborate with local development agencies and trade associations.</p>
484.  
485. <h2>To conclude, is there anything else you would like to mention?</h2>
486.  
487. <p>For me, OpenStreetMap has an enormous potential, one that is not completely known yet. And even though OSM data is not always complete nor accurate, -- which largely depends on the theme and area -- it should not hinder the invention of new applications. There are a lot of professions that use geographical information, often only sporadically, but thet can still have benefit from using OpenStreetMap. The data model of OpenStreetMap and its open tagging system, are both part of the success of the project and contribute to its use in innovative solutions. But there are also disadvantages. One of the challenges is the completeness and the exactness of the data. Maybe, by creating derivations, or mirrors based on the original OSM data, that we can create more easily  professional applications or services that are more reassuring to its users.</p>
488.  
489. <p>There are still a lot of features that have to be added or corrected in OpenStreetMap. I hope to encourage new people to get interested in the project and to get them contributing. It does not matter whether one is an amateur or a professional, everybody can contribute.</p>
490. </description>
491.      <dc:creator>escada</dc:creator>
492.      <pubDate>Fri, 23 Jun 2017 19:16:37 +0000</pubDate>
493.      <comments>http://www.openstreetmap.org/user/escada/diary/41779#comments</comments>
494.    </item>
495.    <item>
496.      <title>Hometown Mapping</title>
497.      <link>http://www.openstreetmap.org/user/bhavana%20naga/diary/41778</link>
498.      <guid>http://www.openstreetmap.org/user/bhavana%20naga/diary/41778</guid>
499.      <description>&lt;p&gt;&lt;img src="https://d2mxuefqeaa7sj.cloudfront.net/s_017522FD1402A7A1A36F186EF96C7E84523BF1F46DEC6747155E20FB29E92985_1498221009004_Vizag-Beach-Road.jpg" alt="image"/&gt;
500.                                          <em>Image Source: <a href="https://in.pinterest.com/pin/592716000929942226/" rel="nofollow">Pinterest</a></em></p>
501.  
502. <p>Vishakapatnam</p>
503.  
504. <p>ఉల్లాసభరితమైనటువంటి తీర ప్రాంతంతో విశాఖపట్టణం ఎల్లప్పుడూ నిత్యనూతనంగా మరియు ప్రశాంతంగా   ఉంటుంది. నిత్యం అభివృద్ధి చెందుతున్న నగరంతో పాటు డేటా కూడా ఎప్పటికప్పుడు మెరుగుపరచడం అనివార్యం.   విశాఖపట్టణంలోని కూర్మన్నపాలెం నా జన్మస్థలం అవ్వడం వలన, నాకున్న అవగాహనతో  ఈ ప్రాంతాన్ని మ్యాప్ చేశాను. గతం లో ఇక్కడ మ్యాప్ చేయని  ఆస్పత్రులు, ఎటిఎం'స్ ,సినిమా థియేటర్స్ వంటి  ప్రాథమిక సౌకర్యాలు మ్యాప్ చేయడం జరిగింది. అభివృద్ధి చెందుతున్న పారిశ్రామిక ప్రాంతం అయినప్పటికీ జాతీయ రహాదారుల క్రమం సరిగ్గా లేకపోవడం వలన దీని మీద పని చేయడం జరిగింది. కాలంతో పాటు జరుగుతున్న పట్టణీకరణ మరియు వ్యాపారీకరణ గమనార్హం. పూర్వం మామిడి తోట అయినటువంటి ప్రదేశాలు కూడా పట్టణీకరణ వల్ల ఆధునిక అడవిలా మారిపోయింది. భవిష్యత్తులో పారిశ్రామిక మరియు గ్రామీణ పరిసరాలలో ప్రాధమిక వసతులని మ్యాప్ చేయాలనీ ఆకాంక్షిస్తున్నాను.</p>
505.  
506. <p>Visakhapatnam is full of life and buzz round the clock. The coastline has its own vivid panorama. Everyday is a new start with amazing developments, be it the pharmaceutical companies or automobile industries or the urban sprawl around Steel Plant. With the improving cityscape, the map data should also be equally updated and maintained. My area of interest was <a href="https://en.wikipedia.org/wiki/Kurmannapalem" rel="nofollow">Kurmannapalem</a> and how it gradually evolved over time. I mapped the main transport network, basic amenities like hospitals, ATMs and several recreation facilities which were not mapped in good detail before. A major concern was the impact of urbanisation and commercialisation. My locality which used to be a mango plantation is now a concrete jungle.</p>
507.  
508. <p><img src="https://d2mxuefqeaa7sj.cloudfront.net/s_017522FD1402A7A1A36F186EF96C7E84523BF1F46DEC6747155E20FB29E92985_1497960869658_image.png" alt="image"/>
509.                          <em>The change from dominant flush green to the grey is evident</em></p>
510.  
511. <p>This is the <a href="https://www.openstreetmap.org/history#map=16/17.6912/83.1640" rel="nofollow">link</a> to go through.</p>
512.  
513. <p><img src="https://d2mxuefqeaa7sj.cloudfront.net/s_017522FD1402A7A1A36F186EF96C7E84523BF1F46DEC6747155E20FB29E92985_1498020038560_image.png" alt="image"/></p>
514.  
515. <p>Going forward, I would love to map the sub urban areas of Visakhapatnam which have major industrial units like Pharmaceuticals and also the basic amenities for the public.  </p>
516. </description>
517.      <dc:creator>bhavana naga</dc:creator>
518.      <pubDate>Fri, 23 Jun 2017 12:58:29 +0000</pubDate>
519.      <comments>http://www.openstreetmap.org/user/bhavana%20naga/diary/41778#comments</comments>
520.    </item>
521.    <item>
522.      <title>Sharp Turns onto Ramps</title>
523.      <link>http://www.openstreetmap.org/user/daniel-j-h/diary/41777</link>
524.      <guid>http://www.openstreetmap.org/user/daniel-j-h/diary/41777</guid>
525.      <description>&lt;p&gt;Here&amp;#39;s a map I got out of our &lt;a href="https://github.com/Project-OSRM/osrm-backend#open-source-routing-machine" rel="nofollow"&gt;Open Source Routing Machine&lt;/a&gt; when I built a validator for sharp turns onto ramps. The idea behind this validator is that turns onto highway ramps should never be sharp (i.e. &amp;lt; 90&amp;#39;ish degree). There is a high chance a turn restriction is missing at those locations.&lt;/p&gt;
526.  
527. <p>With these checks enabled I found roughly 30k intersections on the planet. I visualized the results in the map below; the redder the circle, the sharper the turn angle onto the ramp.</p>
528.  
529. <p><img src="https://user-images.githubusercontent.com/527241/27476667-edaca2fa-5809-11e7-82fd-d8fcdc2c6727.png" alt=""/></p>
530.  
531. <p><a href="https://api.mapbox.com/styles/v1/danieljh/cj42l3yw05epa2sqvellka881.html?access_token=pk.eyJ1IjoiZGFuaWVsamgiLCJhIjoiTnNYb25JSSJ9.vYOnsuu1zeKcGW2nj0uJZw#5.97/51.108/10.748" rel="nofollow">Click for interactive map</a></p>
532.  
533. <p>In the results I found an issue that frequently re-occurred. Consider the situation below: heading east on Goff Mountain Road (the yellow line), there is a ramp on the right that you can legally take. Around the bend, there is another ramp onto the same road for drivers going west on Goff Mountain Road.</p>
534.  
535. <p>If you are driving east on Goff Mountain Road and happen to miss the ramp, re-routing will kick in. When generating a new route past the ramp that you initially missed, OSRM sees in the road network that there is conveniently a second ramp onto the same road. It then basically gives you the instruction to make a nearly 180 degree turn on the the next ramp! A turn restriction onto that second ramp from Goff Mountain Road would fix this issue.</p>
536.  
537. <p><img src="https://user-images.githubusercontent.com/527241/27476734-20168a62-580a-11e7-9333-ab44e973bba8.png" alt=""/></p>
538.  
539. <p><img src="https://user-images.githubusercontent.com/527241/27476735-201732c8-580a-11e7-8aed-eb38dca8e974.gif" alt=""/></p>
540.  
541. <p>Given that the navigation is able to pass in your <a href="https://www.openstreetmap.org/user/daniel-j-h/diary/40795" rel="nofollow">bearings data</a> (what cardinal direction you’re already moving in) to OSRM, OSRM won’t try and tell you to make a fast u-turn and try the first ramp again like in the third frame of the gif. Making a turn onto the second ramp isn’t considered problematic though.</p>
542.  
543. <ul>
544. <li><a href="http://map.project-osrm.org/?z=18&center=38.411288%2C-81.795619&loc=38.412286%2C-81.797789&loc=38.409495%2C-81.793706&hl=en&alt=0" rel="nofollow">Router</a></li>
545. <li><a href="https://www.openstreetmap.org/edit#map=18/38.41129/-81.79562" rel="nofollow">OSM</a></li>
546. </ul>
547.  
548. <p>There are definitely false positives in the data and cases you will never hit in reality. But there are also missing turn restrictions onto ramps that will result in bizarre instructions given back to re-routing requests.</p>
549.  
550. <p>And even though the sharp-turns-onto-ramps validator was just a quick evening hack it would be great to add more static road network property validators that detect situations like u-turns on high-speed roads or sudden changes in road class.</p>
551. </description>
552.      <dc:creator>daniel-j-h</dc:creator>
553.      <pubDate>Fri, 23 Jun 2017 11:30:49 +0000</pubDate>
554.      <comments>http://www.openstreetmap.org/user/daniel-j-h/diary/41777#comments</comments>
555.    </item>
556.  </channel>
557. </rss>
558.  

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