in reply to Re^2: Is it possible to create an interactive scale for palette in GNUplot?
in thread Edited:Using Chart::Gnuplot to creat an interactive scale for palette?

$chart->set(cbrange => '[-120:120]');

See gnuplot page 181.

poj
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Re^4: Is it possible to create an interactive scale for palette in GNUplot?
by Ppeoc (Beadle) on Mar 05, 2016 at 16:06 UTC
    Exactly what I was looking for. Thanks! I tried making it a variable based on the users input 
    $chart->set(cbrange => '[$x:$y]');

    [download]
    But it gives me an error "Column number Expected". Any ideas?
[reply]
[d/l]

      Your variables won't be interpolated inside single quotes. Use doubles

      $chart->set(cbrange => "[$x:$y]");
[reply]
[d/l]

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