Re: [Gnuplot-info] Waterfall / Cascade Plot

[Peter C. <pe...@ho...>]

I tried that and end up getting no data to show up in the plot (and it 
appears to be 2d)
gnuplot> set view map
gnuplot> set datafile separator ","
gnuplot> unset ytics
gnuplot> set xrange[1:600]
gnuplot> set yrange[*:*]
gnuplot> set cbrange [-200:0]
gnuplot> splot 'wf.csv' matrix with image

GNUPLOT (plot_image):  Image grid must be at least 2 x 2.

And a flat 2d image was shown with no data plotted

tried again with:
gnuplot> set yrange[1:8192]
gnuplot> splot 'wf.csv' matrix with image
          warning: No usable data in this plot to auto-scale axis range
          z axis range undefined or overflow

Peter

On 4/12/2013 8:16 AM, walter harms wrote:
> i am not sure but maybe this can help you.
> i use gnuplot to visualize spectra. they are organized
> like value|value|value|....  all rows are the same length.
> my gnuplot file look like that:
>
> set view map
> set datafile separator "|"
> set palette rgbformulae 22,13,-31
> unset ytics
> set xrange [0:500]
> set yrange [*:*]
> set cbrange [0:100]
> splot "coinz" matrix with image
>
>