Raster Analysis and MapServer

Lowell.Filak lfilak at MEDINACO.ORG
Thu Dec 22 13:29:38 PST 2005


Martin, Aaron, & others. 

This is good news.
I have been trying to get processes like this documented to the wiki (before 
the spamming) and to the new site by replying to emails such as these.
I finally gave up in favor of hiring a contractor to develop a (hopefully) 
uniform scripting language interface between MapScript & GRASS. As a result 
please expect to be contacted by the aforementioned contractor during the 
upcoming feasibility study. 

Lowell 

Martin Hoegh writes: 

> Hi,
> I also use Grass for backend. I've written a python script using pexpect to
> start and "drive" a grass session. In this way I can use grass's modules
> through the script as if I was sitting in front of the terminal. The python
> script exposes its functions via SOAP, which allows me to call the script
> with what ever I want - normally php. The down side is that grass is not
> thread safety, which means you can't start more than one session in a mapset
> at the time. My script waits in a loop until the previous spawned session
> ends. This is not good for heavy traffic! After calling grass you can use
> MapServer to render and display the map, neither directly from the grass
> database or let grass export the data to a image file. 
> 
> Martin
 



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