[Gvsig_english] raster analysis within gvsig

[christian Brandt]

Dear Antonio, dear list

thanks for your e-mail, Antonio.

I found the extension for reclassifying raster cell values but it' s not evident how gvsig calculates the new value ranges.
E.g. if I choose the  option within the extension  there is the possibility to create a lookup table with max, min and new values for the ranges.
In the resulting layer indeed, the raster values are reduced just on two cell values (0 and 0,02) written out.

Can anybody explain that to me?

Regards

Christian

----------------------------------------
> Date: Mon, 4 Aug 2008 21:24:20 +0200
> From: afalciano at yahoo.it
> To: gvsig_internacional at runas.cap.gva.es
> Subject: Re: [Gvsig_english] raster analysis within gvsig
> 
> christian Brandt ha scritto:
>> Dear list,
>> 
>> I decided to produce my results of GRASS analysis within gvsig (as there
>> are no such possibilities for layouting within GRASS).
>> 
>> So I would like to layout GRASS-Rasterfiles in combination with shape
>> files. But I neither did manage yet to produce appropriate cell value
>> ranges for the rasters nor to assign appropriate tables of color.
> 
> Chris,
> install Raster Pilot, then click with the right button on your raster
> layer in ToC, choose "Table of color" option and so on...
> 
>> I think the first step would be to (re)classify the cell value ranges
>> for the raster. But where (I had a look within Sextante) can I find the
>> appropriate extension or how can I define specific cell value ranges?
> 
> Sextante --> Reclassify raster layers --> Reclassify... as you want!
> 
> Regards,
> Antonio
> 
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