[Qgis-user] qgis-grass and NDVI table color

Goyo goyodiaz at gmail.com
Mon Feb 23 13:13:20 PST 2009


El lun, 23-02-2009 a las 02:05 +0100, andrea pacifici escribió:
> Hi Goyo,
> thanks for your replay. I already tried, but it is just one single
> band. In fact, in the layer properties dialogue just band 1 appears,
> and three bands colour is un-selectable.

Of course I should have guessed that. Sorry, I don't know what the
problem can be.

Goyo

> 
> Andrea
>   
> 
> 2009/2/23 Goyo <goyodiaz at gmail.com>
>         El sáb, 21-02-2009 a las 02:01 +0100, andrea pacifici
>         escribió:
>         > Hi,
>         > I'm using Qgis-GRASS on ubuntu 8.04 i386
>         >
>         > I have prepared a landsat NDVI image using Qgis-GRASS. From
>         GRASS I
>         > applied to the image the NDVI table color. In the monitor of
>         GRASS the
>         > image appears like this (and it appears to be OK) but in
>         Qgis the
>         > image appears like this.
>         > Possibly Qgis have some problem with signed floating-point
>         data?
>         
>         
>         Maybe qgis renders the image as three band color but uses band
>         1 for
>         red, green and blue. Open the layer properties dialog and
>         select band 2
>         for green, band 3 for blue in the simbology tab.
>         
>         Goyo
>         
> 
> 
> 
> -- 
> _____________________________
> Dott. Geol. Andrea Pacifici, Ph.D.
> Via San Paolino n° 21, 
> 55100 Lucca (Lu)
> Tel. e Fax. 0583-080365
> Cell. 328-0991808
> web: www.geoitt.it
> e-mail: pacifici at gmail.com




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