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PyWPS and external tools
========================
GRASS GIS
---------
PyWPS can handle all the management needed to setup temporal GRASS GIS
environemtn (GRASS DBASE, Location and Mapset) for you. You just need to
configure it in the :class:`pywps.Process`, using the parameter
``grass_location``, which can have 2 possible values:
``epsg:[EPSG_CODE]``
New temporal location is created using the EPSG code given. PyWPS will
create temporal directory as GRASS Location and remove it after the WPS
Execute response is constructed.
``/path/to/grassdbase/location/``
Existing absolute path to GRASS Location directory. PyWPS will create
temporal GRASS Mapset direcetory and remove it after the WPS Exceute
response is constructed.
Then you can use Python - GRASS interfaces in the execute method, to make the
work.
.. note:: Even PyWPS supports GRASS integration, the data still need to be
imported using GRASS modules ``v.in.*`` or ``r.in.*`` and also they have
to be exported manually at the end.
.. code-block:: python
def execute(request, response):
from grass.script import core as grass
grass.run_command('v.in.ogr', input=request.inputs["input"][0].file,
...)
...
grass.run_command('v.out.ogr', input="myvector", ...)
Also do not forget to set ``gisbase`` :ref:`configuration` option.
OpenLayers WPS client
---------------------
ZOO-Project
-----------
`ZOO-Project <http://www.zoo-project.org>`_ provides both a server (C) and
client (JavaScript) framework.
QGIS WPS Client
---------------
The `QGIS WPS <https://plugins.qgis.org/plugins/wps/>`_ client provides a
plugin with WPS support for the QGIS Desktop GIS.
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