Since I want to covert an OSM file to a shapefile, I need to know if all nodes in OSM are POIs. Should I delete the nodes which are not POI?

And different people will upload different nodes using GPS even though they are on the same road, so how do we define this road?

I'm a newcomer and don't have much knowledge about OSM.I hope somebody can help me :-)

asked 16 Oct '12, 09:14

HC_bunny's gravatar image

HC_bunny
1111
accept rate: 0%

edited 16 Oct '12, 10:17

sleske's gravatar image

sleske
4.0k125577


Of roughly 1.6 billion nodes in OSM (as of October 2012), only 70 million - less than 5% - have at least one tag, which is a prerequisite for being a POI. Even a node with a tag need not be a POI; sometimes, even the nodes used to support an imported geometry are tagged with a "source" or similar tag.

If you want to convert OSM data to shape files, use one of the existing utilities osm2shp or osmjs, or import into PostGIS with osm2pgsql or imposm and export to shape from there. Enter "shapefile" in the search box above to see other questions and answers about this.

permanent link

answered 16 Oct '12, 09:24

Frederik%20Ramm's gravatar image

Frederik Ramm ♦
72.8k846601132
accept rate: 24%

2

Also, not all POIs are nodes - some are drawn as areas.

(16 Oct '12, 10:34) EdLoach ♦
1

Also, take some days and read the OSM wiki ... starting for example at http://wiki.openstreetmap.org/wiki/Elements or the Main Page

(16 Oct '12, 10:55) stephan75
Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×162

question asked: 16 Oct '12, 09:14

question was seen: 1,586 times

last updated: 16 Oct '12, 10:55

powered by OSQA