Re: Loading and average PGM files

[Jordi Gutiérrez Hermoso]

On 26 June 2012 03:01, Mathieu <address@hidden> wrote:
> I think I followed step by step your instructions.
[snip]
> warning: your version of GraphicsMagick limits images to 8 bits per pixel
> error: imread: invalid image file: Magick++ exception: Magick: Invalid
> colormap index (index 65287 >= 256 colors,
> /home/mja/Documents/test/Following/d/1.pgm) reported by
> magick/colormap.c:239 (MagickConstrainColormapIndex)
> error: called from:
> error:   /usr/share/octave/3.6.2/m/image/imread.m at line 74, column 7

What does the following program output?

    #include <Magick++.h>
    #include <iostream>

    int main()
    {
      std::cout << QuantumDepth << std::endl;
    }

Save it to foo.c++, compile and run with:

    g++ $(pkg-config --cflags GraphicsMagick++) foo.c++ -o foo && ./foo

On my system, the output is 16.

- Jordi G. H.