up vote 2 down vote favorite

I'm using gnuplot to print a chart. I want to print this chart once with a normal scale and once with a log scale.

When I print the image with a logscale I want to execute the following code:

set yrange[1:500]
set logscale y
set ytics (100, 200, 400) nomirror

However, when I want to print the image with a normal scale, I want to use the following code:

set yrange[1:350]
set ytics (100, 200, 300) nomirror

At the moment, I comment these command out if I want to print a specific version. However, I'm asking myself if there is a better option to do this. Maybe an if-condition?

The same question applies for the output file. At the moment I'm doing it like this:

set output '| ps2pdf - "plot.pdf"'

and if I print the log scale file, I just change the output name. However, I would prefer to generate both images at the same time. How can I achieve that?

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up vote 4 down vote accepted

How about:

set terminal pdfcairo

set output 'normalPlot.pdf'

set yrange[1:350]
set ytics (100, 200, 300) nomirror
plot 'data.dat'

set output 'logPlot.pdf'

set yrange[1:500]
set logscale y
set ytics (100, 200, 400) nomirror
replot

It's fine to have two outputs at different points in the same script.

I also suggest using the pdf or pdfcairo terminals directly rather than converting, unless you have a good reason for doing so.

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Thanks for the hint. And also thank for the hint how I could generate two output files. However, no I have to duplicate my whole plot code. Is there any way to avoid this? – RoflcoptrException Jun 29 '13 at 19:08
    
Yes, there is! The replot command will plot the same data as the previous plot command. (I meant to use that in my example the first time--I have edited it.) – andyras Jun 29 '13 at 19:15
    
cool thanks a lot! now I have to only figure out how to install pdfcairo on my mac and then everything is done :) – RoflcoptrException Jun 29 '13 at 19:20
    
Ok another minor issue :) What if the last plot is a multiplot? :) – RoflcoptrException Jun 29 '13 at 19:38
    
@RoflcoptrException For multiplot mode you can't use replot but you could put the common code into one file and load it with load 'file.gp' from the main file. – Christoph Aug 5 '13 at 12:08

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