Re: [Gnuplot-info] plotting topographic data

[yoel <yoe...@gm...>]

Thanks a lot!!!
It's great having such nice people in the world :)
Yoel


Thomas Sefzick wrote:
> 
> set x2range [-0.5:399.5]
> set y2range [-0.5:399.5] reverse
> set xrange [11.4:987.2]
> set yrange [5.5:13.8]
> set xtics out nomirror
> set ytics out nomirror
> plot 'Z_TraceUp.topography' matrix axes x2y2 with image
> 
> 
> yoel wrote:
>> 
>> Hi all,
>> I have topographic data as an 400x400 pixel matrix:
>> 1 2 3 4 5 6 ..... 400
>> 4 6 3 5 5 2 ..... 42
>> .                      .
>> .                      .
>> .                      .
>> 400.................400
>> 
>> To plot it as a color-coded topographicmap  I use "plot "myfile" matrix
>> with image" which gives me the result but upside down (meaning I want to
>> rotate it 180 degrees).
>> I tried using flipy and flipx but I get this error:
>> $splot "Z_TraceUp.topography" yflip matrix with pm3d
>> $                             ^
>> $"topographyImage.gp", line 23: ';' expected
>> 
>> Also, the matrix option forces the x and y values to be the m,n values in
>> the pixel matrix.
>> Is there a way to change the x and y tics to be with other values?
>> For example, I'd like the x range to be [11.4,987.2] rather than [0,400].
>> 
>> Anybody knows how I can do these things?
>> Thanks a lot,
>> Yoel
>> 
> 
> 

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