[Qgis-user] basic raster processing

[Carson Farmer]

John,

It's the next generation, and I believe it is quite a bit more powerful. 
I haven't really gotten a chance to play around with it too much, but it 
looks very promising!

Carson
> Thanks Carson.  I'll give it a try.
>
> Is rasterlang the next generation of Barry's Raster Algebra plugin?  
> (http://www.maths.lancs.ac.uk/~rowlings/Software/RasterAlgebra/)   Or 
> do they work together?  Using the Plugin Installer in QGIS 1.0.2 , I 
> see rasterlang listed from Barry's repository 
> (http://www.maths.lancs.ac.uk/~rowlings/Qgis/Plugins/plugins.xml) but 
> not Raster Algebra.
> - John
>
>
>
> Carson Farmer wrote:
>> John,
>>> I'm relatively new to QGIS.  I've used it for viewing various 
>>> sources of data and some vector editing and geoprocessing.  Now, I'd 
>>> like to do some basic raster processing, like simply multiplying and 
>>> adding rasters, conditional expressions (e.g., if value < 0, then = 
>>> 0, else value), slope, aspect, etc....
>>>
>>>
>>> What is the method to do these via QGIS?   GRASS may be an option 
>>> but I understand it takes some preprocessing to get your files into 
>>> GRASS datasets, which could be a lot of work (numerous data sets, 
>>> some several GBs in size.)    Thanks.
>>
>> Have a look at Barry Rowlingson's rasterlang plugin:
>> http://www.maths.lancs.ac.uk/~rowlings/Qgis/Plugins/plugins.xml
>>
>> Barry also has a google code page which would likely have his latest 
>> version/improvements:
>> http://code.google.com/p/bsrplugins/source/browse/#svn/trunk
>>
>> Carson
>>
>


-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: Carson.Farmer at gmail.com
Web:   http://www.carsonfarmer.com/
       http://www.ftools.ca/