OpenLayers – Implementing WPS Client in OpenLayers 3

openlayersopenlayers-2wpswpsclient

Is it possible (and what is the recommended way) to use OpenLayers 3 to do the work of theOpenLayers.WPSClient?

As shown in the old WPS client example, OpenLayers 2 can be used to operate WPS.

There are OpenLayers 3 examples for using other web services like WFS and WMS, but not WPS (as of 3.2.1).

Is this temporary or by design?

Best Answer

As part of the WPS-GUI project that I did I created a WPS client "library" that closely models after the OpenLayers 2 interface. It uses JSONIX for the all OGC XML marshalling and unmarshalling.

You can check it out here:

https://github.com/boundlessgeo/wps-gui/blob/master/src/wpsclient.js

Related Solutions

[GIS] Creating simple WPS client

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

Best Answer

Related Solutions

[GIS] Creating simple WPS client

Related Question