3

It looks like the only way to get flat files/data from a WPS service is to use a client. I'm looking to create a super-simple WPS client in Python 2.6 (or other language) without any dependencies on non-default modules.

Right now I'm gathering resources - I haven't done a lick of coding yet.

Can I use a POST HTTP request with a proper header to request a WPS file?

Additional Info:

7

I have done this using urllib2 in python.

Some simple code is

import urllib2

request_file = open("my_wps_request.xml", "r")
xml_data = request_file.read()
r = urllib2.Request(
    "http://192.168.109.147:8080/geoserver/wps",
    data=xml_data,
    headers={
        'Content-Type': 'application/xml',
        'Accept' : 'image/tiff'
        })

u = urllib2.urlopen(r)

tiff_file = open('out.tif', 'wb')
tiff_file.write(u.read())
tiff_file.close()

I am using geoserver (with python wps extension).

Geoserver Admin page has a Demos -> WPS Request Builder page. Here you can select a WPS and "Generate XML from process inputs/outputs".

Save the xml into a file (my_wps_request.xml above).

urllib2.request does a POST request with the xml data. In the above example the returned data is a tif so I just write that to a file.

Even simpler I have used curl

curl -u admin:geoserver -H "Content-Type:text/xml" -X POST -d @my_wps_request.xml http://192.168.109.147:8080/geoserver/wps > out.tiff

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.