The Developer Documentation for WeoGeo’s API provides examples using curl:

curl example in WeoGeo Developer Documentation (wiki.weogeo.com)

However, after fielding some questions from Developers, I’m thinking some Python (and C#?) examples might be useful too.  So here is the first installment.

This is a bare-bones example of the List Datasets API, which returns a list of Datasets within the (optional) defined parameters.  Possible parameters include a Minimum Bounding Rectangle (MBR), date range, ratings, and/or Tags.

import urllib

usern = [your WeoGeo username]
passw = [your WeoGeo password]
library = [the * part of your Library's domain name *.weogeo.com]

# List Datasets (GET) curl example:
# curl -H 'Content-Type: application/xml' http://#{hostname}/datasets.weo?page=1&east=0&north=90&south=0&west=-180&scale=5

# Optional parameters:
params =  urllib.urlencode(
    {
        'page': 1,
        'per_page': '15',
        'north': '90.0',
        'south': '-90.0',
        'east': '180.0',
        'west': '-180.0',
        'date_from': '1990-01-01',
        'date_to': '2010-01-01',
        'data_type': 'RASTER',
        'min_provider_rating': '0',
        'min_dataset_rating': '0',
        'tags': 'test'
    }
)

# construct the URI for the API with parameters:
url = "https://%s:%s@%s.weogeo.com/datasets.weo?%s" % (usern,passw,library,params)

# call the URI
f = urllib.urlopen(url)

# print results to the CLI
print f.read()

For extra credit, try changing the extension from “.weo” to [".kml",".json",".rss"].

Next time, I’ll show the same WeoGeo API call in Python but use httplib instead of urllib.  Although, urllib is simpler, httplib handles authentication better and enables the more sophisticated requests that will be required for later API examples.

Tags: Python

This entry was posted on Thursday, January 7th, 2010 at 11:02 am and is filed under WeoGeo API. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.