Re: [Gnuplot-info] plotting topographic data

[Thomas S. <t.s...@fz...>]

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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