Re: [Gnuplot-info] Question regarding placement of cbtics

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

plot twice, 1st time to e.g. the alphanumeric terminal. use the value
of the variable 'GPVAL_CB_MAX' which is set during the 1st plot.
then plot again:

set output
set term push
set term dumb
plot ...
set cbtics ('$0$' 0, '$v_{\text{max}}$' GPVAL_CB_MAX)
set term pop
set output ...
replot


Christian Schroeder-7 wrote:
> 
> Hi,
> 
> Thanks for reading my post. I'm looking for some "how to" advice for the
> following context:
> 
> I have an array of 64x64 data points that I'm plotting "with image", in
> color, using epslatex. I know that the smallest values in my data are 0,
> and that there are many of these "0" pixels. I do not, however, know in
> advance what my data set's maximum value is. I'd like to plot this data
> using the auto-generated color-box, but in a relative fashion, without
> actually ascribing particular values to particular colors. In fact, I'd
> only like to have two cbtics: one at zero and one at the maximum value of
> the data set. Right now, for example, I'm using the following command:
> 
> set cbtics ('$0$' 0, '$v_{\text{max}}$' 2.405e4)
> 
> where "2.405e4" is the maximum value of one particular data point - the
> largest value of all the data points - that I had to look up in the data
> set in advance. This value will, of course, be different for another data
> set, meaning I'd have to look it up again each time I plot a different
> data set.
> 
> Is there any way that I can get gnuplot to put my "v_max" color-box label
> at the (unknown in advance) maximum value of my data set? The more painful
> way for me to approach this problem is to normalize my data, a step I'd
> prefer not to have to take. If there's a really obvious answer to this, I
> apologize for asking the question; however, I did spend some time looking
> around to no avail!
> 
> Thanks again for your time!
> 
> Christian
> 
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