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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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2-D Surface Plot with Logarthmic Color Scale

Posted 2011年6月17日 GMT-4 14:57 Version 4.1 3 Replies

Eric M. Tridas
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In a 2-D surface plot is it possible to apply a logarithmic color scale rather than a linear one? I have data clustered at very low values but still wish to represent higher values as well. It seems like a simple enough task I just could not figure out how to do it. Thanks in advance for any advice!
3 Replies Last Post 2016年10月5日 GMT-4 09:28
Jeff Hiller COMSOL Employee

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Posted: 1 decade ago 2011年6月17日 GMT-4 17:15
Why not plot the logarithm of whatever you're plotting now? Wouldn't that achieve what you want?
Why not plot the logarithm of whatever you're plotting now? Wouldn't that achieve what you want?
Eric M. Tridas
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Posted: 1 decade ago 2011年6月20日 GMT-4 08:07
Jean-Francois, thank you for your advice. That worked perfectly.
Jean-Francois, thank you for your advice. That worked perfectly.
Chris Nadovich
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Posted: 8 years ago 2016年10月5日 GMT-4 09:28
Not to be nit-picky but plotting the log(x) is not the same as plotting x on a log scale. In the former case, the units become a bit obscure and the legend is a tad wonky to interpret. In the latter case the units stay the same and the legend is annotated with true values of x. Yes, if you just want a picture, a subtle point like this doesn't matter. Plot log(x) and just deal with it. But if Comsol wants to do professional visualization within the tool, then it should care about such subtleties.
Not to be nit-picky but plotting the log(x) is not the same as plotting x on a log scale. In the former case, the units become a bit obscure and the legend is a tad wonky to interpret. In the latter case the units stay the same and the legend is annotated with true values of x. Yes, if you just want a picture, a subtle point like this doesn't matter. Plot log(x) and just deal with it. But if Comsol wants to do professional visualization within the tool, then it should care about such subtleties.

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