How do I get the ID of the newest GPX file uploaded to OpenStreetMap?

Question

I have a program that downloads and process GPX tracks from OpenStreetMap using:

http://www.openstreetmap.org/traces/{ID}/data

But how can I find the ID of the latest uploaded GPX file?

Currently I get the ID from:

http://www.openstreetmap.org/traces

But that data is mostly meant to be read by humans, and needs a lot of parsing - is there a better way?

Answer 1

Well you can always use the rss feed, just extracting the link element with a regexp will work.

([0-9]*)</link>

e.g

curl http://www.openstreetmap.org/traces/rss |
sed -r 's|.+s/([0-9]+)</link>|\1|;t;d'|
head -1

But compare that to parsing the html page there is almost no gain.

href="/user/[^/]*/traces/([0-9]*)"
href="/edit?gpx=([0-9]*)"

e.g.:

wget -O - "http://www.openstreetmap.org/traces" |
sed '/traces/!d; s|.* href="/user/[^/]*/traces/\([0-9]*\)" .*|http://www.openstreetmap.org/traces/\1/data|;t;d'|
head -1

Answer 2

2

As the API doesn't seem to have a way of retrieving the newest GPX trace ID, here is an example of a shell command to grab the ID from the traces page:

curl -s "http://www.openstreetmap.org/traces" | grep -m 1 "/edit?gpx=" | cut -d "=" -f3 | cut -d "\"" -f1

But of course this might stop working in the future as the layout of the page may change.

permanent link

answered 08 Sep '10, 10:45

scai ♦
33.3k●21●309●459
accept rate: 23%

How do I get the ID of the newest GPX file uploaded to OpenStreetMap?

Follow this question

Related questions