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From: Christian S. <csc...@uo...> - 2011-07-02 18:03:11
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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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From: Thomas S. <t.s...@fz...> - 2011-07-02 19:05:03
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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
>
> ------------------------------------------------------------------------------
> All of the data generated in your IT infrastructure is seriously valuable.
> Why? It contains a definitive record of application performance, security
> threats, fraudulent activity, and more. Splunk takes this data and makes
> sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-d2d-c2
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>
>
--
View this message in context: http://old.nabble.com/Question-regarding-placement-of-cbtics-tp31980544p31980741.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.
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From: Christian S. <csc...@uo...> - 2011-07-02 19:33:25
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Thank you very much! However, I found that I also needed to add:
set cbrange [0:GPVAL_CB_MAX]
v_max did not appear unless that was there, too.
Thank you again!
Christian
----- Original Message -----
> 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
> >
> > ------------------------------------------------------------------------------
> > All of the data generated in your IT infrastructure is seriously
> > valuable.
> > Why? It contains a definitive record of application performance,
> > security
> > threats, fraudulent activity, and more. Splunk takes this data and
> > makes
> > sense of it. IT sense. And common sense.
> > http://p.sf.net/sfu/splunk-d2d-c2
> > _______________________________________________
> > gnuplot-info mailing list
> > gnu...@li...
> > https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> >
> >
>
> --
> View this message in context:
> http://old.nabble.com/Question-regarding-placement-of-cbtics-tp31980544p31980741.html
> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
> All of the data generated in your IT infrastructure is seriously
> valuable.
> Why? It contains a definitive record of application performance,
> security
> threats, fraudulent activity, and more. Splunk takes this data and
> makes
> sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-d2d-c2
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
--
__________________________________________________
Christian B. K. Schroeder, MSc, PPhys (Physics)
PhD Candidate, Dynamic MRI Microscopy (DOI: 10.1103/PhysRevLett.106.046001)
University of Guelph Department of Physics "Yes; I can do that."
Stone Road
Guelph ON N1G 2W1
CANADA
Fax: (519)836-9967
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