[Paraview] Correlation coefficient

[Rupert Gladstone]

Hi, I'd like to calculate a correlation coefficient between two variables
in a vtu data set.  I am not experienced with statistics but the Pearson
correlation coefficient looks suitable.  So I just need the covariance and
standard deviations.

The Paraview Multicorrelative Statistics filter seems to give the
covariance, but I can't find a filter that gives the standard deviation.
The Descriptive Statistics filter is supposed to give standard deviation
according to the documentation, but I am not getting it when I run the
filter.  I am referring to this documentation:
http://www.paraview.org/Wiki/Statistical_analysis

I am currently running both paraview 4.0.1 and 5.0.0.  They give slightly
different outputs from the statistics filters, but neither gives me the
standard deviation (unless it is hidden in M2, M3 or M4?  I don't know what
these are).

Can anyone help with either my lack of standard deviation or an alternative
way to calculate a correlation coefficient?

Thanks,
Rupert Gladstone
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