NOTICE: help.openstreetmap.org is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum

2
1

Hello Everybody,

I would like to use openstreetmaps to create some statistics about playgrounds. Specifically I would like to know how many playgrounds there are in Germany and in Berlin.

But I would also love to understand how to generally count specific tags in a specific area.

Thanks a lot and excuse me, if there is an easy anser - I haven't done much with Openstreetmaps yet.

asked 29 Oct '17, 19:23

JannesPeters's gravatar image

JannesPeters
46114
accept rate: 0%

edited 31 Oct '17, 06:25

SimonPoole's gravatar image

SimonPoole ♦
44.7k13326701


One could use Overpass. This query counts the number of playgrounds in Berlin. You could replace Berlin with Germany. Please note that because we export the count, the playgrounds are not displayed on the map. You have to look at the "data" tab after executing the query.

The Overpass documentation has an example to count the number of Pharmacies per county.

permanent link

answered 29 Oct '17, 19:40

escada's gravatar image

escada
19.0k16166302
accept rate: 21%

just a quick question. Here is the result for germany. What is the difference between "@count" and "@count:nodes"?

@count: 84743 @count:nodes: 28559 55812 @count:ways: 372 @count:relations

(29 Oct '17, 19:54) JannesPeters
2

Playgrounds can be represented as a point or area, "count" returns all the representations, "count:nodes" returns just the point features. More at http://wiki.openstreetmap.org/wiki/Elements.

(29 Oct '17, 20:43) maxerickson

Naturally there could be some double counting (playgrounds mapped as an area and as a node), but I suspect (from spot checking the data) that this is likely to be minimal.

(29 Oct '17, 22:16) SimonPoole ♦

The other thing to note, is that "kindergarten" is a fairly fuzzy concept (in general not just OSM). For example the Austrian variant would clearly include non-educational childcare on the other hand in Germany and Switzerland it would be more of a pre-school facility.

(29 Oct '17, 22:19) SimonPoole ♦

Go to http://overpass-turbo.eu/ start the wizard and enter "leisure=playground in Germany" (without the quotes), build the query and set the timeout to 240 up from the standard 25 (that allows the query to run for a maximum of 240 seconds).

Note the query is fairly slow and returns a lot of data, probably best to start with Berlin (leisure=playground in Berlin").

permanent link

answered 29 Oct '17, 19:40

SimonPoole's gravatar image

SimonPoole ♦
44.7k13326701
accept rate: 18%

edited 29 Oct '17, 19:48

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:

×20
×18

question asked: 29 Oct '17, 19:23

question was seen: 2,209 times

last updated: 31 Oct '17, 06:25

NOTICE: help.openstreetmap.org is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum