Why not ask your question on the new OpenStreetMap Community Forum?

Does anyone know if we can find anywhere some statistics on the tag source=* used on the changeset? I mean, for example:

  • percentage of changesets having this tag
  • amount of primitives in the database that have at least one changeset tagged with a given source=* value

It can be usefull for measuring the use of a datasource, in a more precise way that only use taginfo (that is great btw).


asked 01 Mar '12, 08:26

NicolasDumoulin's gravatar image

accept rate: 13%


I'd be very interested in this as well. ChangesetMD might help out with this, but it still requires some database know-how: https://github.com/ToeBee/ChangesetMD

(05 Mar '12, 03:23) JoshD

The source tag is very seldomly used, about 0.5% of all changesets uses the source tag. But 2% of all changed/created/deleted objects have a source tag on the changeset, according to num_changes in the changeset header.

This is based on a small perl script (feel free to use it, it will be buggy).

permanent link

answered 05 Mar '12, 08:42

emj's gravatar image

accept rate: 15%

edited 05 Mar '12, 09:09

Your answer
toggle preview

Follow this question

By Email:

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



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:


question asked: 01 Mar '12, 08:26

question was seen: 2,807 times

last updated: 05 Mar '12, 09:09

powered by OSQA