Installation of PyWPS¶
- python – currently 2.5, 2.6 are supported, 2.4 is deprecated
- Web Server
- (e.g. Apache) - http://httpd.apache.org - You will need a web server to be able to execute processes from remote clients over the Internet. PyWPS was tested with Apache 1.1 and 2.x versions.
- GIS GRASS
- http://grass.osgeo.it - Geographical Resources Analysis Support System (GRASS) is an Open Source GIS, which provides more then 350 modules for raster and vector (2D, 3D) data analysis. PyWPS is written with native support for GRASS and it’s functions. GRASS also has Python bindings, so you can run the modules directly.
- http://proj.maptools.org - Cartographic Projections library used in various Open Source projects, such as GRASS, MapServer, QGIS and others. It can be used e.g. for coordinate transformation. Proj4 is required if you want to integrate MapServer as well, using the python-pyproj package.
- http://gdal.org - translator library for raster geospatial data formats. GDAL/OGR is used in various projects for importing, exporting and transformation between various raster and vector data formats. GDAL and OGR are also required if you want to integrate MapServer, using the python-gdal package.
- http://mapserver.org - If you want to access ComplexValue outputs using OGC OWS (WMS, WFS, WCS) services, MapServer is required. PyWPS will generate a MapServer mapfile for you automatically. The python-mapscript package is required.
- http://www.r-project.org - is a language and environment for statistical computing and graphics.
Installation the quick ‘n’ dirty way¶
For installing PyWPS to your server quickly, simply unpack the archive to some directory. You can also use current repository version.:
1 - cd to target directory:
$ cd /usr/local/
2 - unpack pywps:
$ tar xvzf /tmp/pywps-VERSION.tar.gz
You have to change the write access of
so the web server can compile the templates:
chmod 777 /usr/local/pywps-VERSION/pywps/Templates/1_0_0
Installation the ‘clean’ way¶
Unpack the package
$ tar -xzf pywps-VERSION.tar.gz
$ python setup.py install
Installation using prebuild distribution packages¶
PyWPS provides packages for Debian and RPM based Linux Distributions.
The packages are not maintained properly and until we don’t find packagers, we recommend to use any other approach, described earlier in this section.
Testing the installation¶
If PyWPS has been successfully installed, you can test this with running it without any input or further configuration.
First you need to find the cgiwps.py script, which is in the root of pywps
installation directory (if you used the Quick and dirty way), or it
should be located in
/usr/bin directory, if you used the clean way
Run cgiwps.py on the command line:
And you should get result like this (which is a mixture of standard output and standard error):
PyWPS NoApplicableCode: Locator: None; Value: No query string found. Content-type: text/xml <?xml version="1.0" encoding="utf-8"?> <ExceptionReport version="1.0.0" xmlns="http://www.opengis.net/ows" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <Exception exceptionCode="NoApplicableCode"> <ExceptionText> No query string found. </ExceptionText> </Exception> </ExceptionReport>
In this case, you have installed PyWPS correctly and you are ready to proceed to configuration.