[OSM-dev] Distance Grid
Ævar Arnfjörð Bjarmason
avarab at gmail.com
Tue Dec 1 20:32:13 GMT 2009
On Tue, Dec 1, 2009 at 20:27, Matt Amos <zerebubuth at gmail.com> wrote:
> On Tue, Dec 1, 2009 at 7:03 PM, Ævar Arnfjörð Bjarmason
> <avarab at gmail.com> wrote:
>> On Tue, Dec 1, 2009 at 17:06, Matt Amos <zerebubuth at gmail.com> wrote:
>>> On Tue, Dec 1, 2009 at 4:04 PM, Vitor George <vitor.george at gmail.com> wrote:
>>>> I want to start a project in Brazil that is similar to the Tiger Fixup 250
>>>> Cities , and I looking forward to build a script that generates a
>>>> distance grid, like this:
>>>> I've tried to contact the authors via wiki, but I was unsuccessful, so I
>>>> want to develop it by myself. I'm not a professional programmer, but I have
>>>> some experience in java. Is the LibOSM the easiest way tool to implement it?
>>> sorry you missed us on the wiki. i have to say, i don't really check
>>> the discussion pages like a good wikian should :-(
>>> the script is very simple, and uses cloudmade's ruby API  to get
>>> the routes. you'll need to sign up for a cloudmade API key, if you
>>> haven't already. the script i've attached will output CSV on stdout,
>>> but i usually put them in a database for easy access.
>>> run it like "ruby routes.rb <conf file>". i've attached an example
>>> configuration file, which is just a yaml map of string to lat/lon
>>> i look forward to seeing brazil's 250 cities :-)
>> I made a hacky script to generate .yml from XAPI output (attached):
>> wget 'http://www.informationfreeway.org/api/0.6/node[place=city|town|village|hamlet][bbox=-25.74085,62.84553,-12.41708,67.50085]'
>> -O iceland-places.osm
>> perl -CI place2yaml.pl < place.osm > place.yml
>> But I just get internal server errors from the CM API:
>> $ ruby routes.rb place.yml
>> [Tue Dec 01 18:59:57 +0000 2009] HTTP error: Couldn't read data. HTTP
>> status: #<Net::HTTPInternalServerError:0xb769348c>, retrying...
> interesting. if you could send me a trace of what's going on that
> would be very helpful.
Silly me, I was generating an invalid YAML file. still this could use
a better error message:
075.101.134.058.00080-192.168.002.101.41914: HTTP/1.1 500 Internal Server Error
Date: Tue, 01 Dec 2009 20:28:09 GMT
Sorry, some unrecoverable error happened
>> Anyway do you have a script to generate that cute HTML matrix? And how
>> can I link to a route on CM's website. I have to supply lat/lon/zoom
>> it seems and not just starting/ending lat/lon (at least the URLs I've
>> seen are all like that).
> i've just thrown something together here - might be buggy, etc...
> you'll need to play with the factor variable to see what looks right
> for your area.
Sweet, I'll try it out.
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