[Qgis-user] Re: [GRASS-user] prima di fare una figura da bischero

[Markus Neteler]

On Tue, Jul 28, 2009 at 4:23 PM, Paolo Cavallini<cavallini at faunalia.it> wrote:
> Hi all.
> Sorry for crossposting - I do not know whether the problem resides in
> grass or in qgis.

I have tested, it is in QGIS. See below...

> I'm following:
> http://trac.osgeo.org/grass/wiki/HowToTestGrass6
> All fine, but for the fact that the calculated ndvi map appears on grey
> scale, and applying the ndvi color table does not change it.
> /usr/lib/grass64/etc/colors/ndvi seems ok:
>
> -1.000   5  24  82
> -0.300   5  24  82
> -0.180 255 255 255
>  0.000 255 255 255
>  0.025 206 197 180
>  0.075 191 163 124
>  0.125 179 174  96
>  0.150 163 181  80
>  0.175 144 170  60
>  0.233 166 195  29
>  0.266 135 183   3
>  0.333 121 175   1
>  0.366 101 163   0
>  0.433  78 151   0
>  0.466  43 132   4
>  0.550   0 114   0
>  0.650   0  90   1
>  0.750   0  73   0
>  0.850   0  56   0
>  0.950   0  31   0
>  1.000   0   0   0


The resulting NDVI map is colorized in GRASS. But also
here it isn't in QGIS (trunk from yesterday).

> I get these warnings:
> Warning: QPainter::setPen: Painter not active
> Warning: QPainter::setFont: Painter not active
> Warning: QPainter::end: Painter not active, aborted
> Warning: QPixmap::scaled: Pixmap is a null pixmap
> Warning: Object::connect: No such signal
> QgsRasterLayer::editingStarted() in
> /storage/build/qgis_unstable/src/app/legend/qgslegend.cpp:548
> Warning: Object::connect: No such signal
> QgsRasterLayer::editingStopped() in
> /storage/build/qgis_unstable/src/app/legend/qgslegend.cpp:549

Same messages here.

> But I do not know if they are relevant.
> Any ideas on how to approach this?

Some QGIS debugging...

best
Markus