[ferret_users] Follow-up on: bins in frequency_histogram.jnl

[Stephen Guimond <sguimond@xxxxxxx>]

All,

I did some tooling around and found an answer to my question.  It looks like the routine "frequency_histogram.jnl" look for values within the desired bin CENTERED on the value and INCLUDING the edges....

yes? SET DATA levitus_climatology
yes? GO  frequency_histogram temp[X=0:360,Y=0:45N,Z=0] 0 32 0.5

I looked at temp 27.50 and found 1107 occurrences.  To check the number is correct the search must look like this...

yes? let test = if temp[X=0:360,Y=0:45N,Z=0] ge 27.25 and temp[X=0:360,Y=0:45N,Z=0] le 27.75 then temp[X=0:360,Y=0:45N,Z=0]

yes?let good = test[i=@ngd,j=@ngd,k=@ngd]

This verifies the value of 1107.  It was useful for me to know that information, hope it will be for others, too.

Steve

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Stephen R. Guimond
Graduate Research Assistant
Florida State University
Center for Ocean-Atmospheric Prediction Studies (COAPS)
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