Re: bimodal?

Michael Notaro wrote:
> I have a daily climatology for a variable at every grid point,
> so 365 daily values at each grid cell. I want to determine
> which grid cells have a bimodal pattern. For example,
> I know some areas peak in spring and late summer with
> a minimum during mid-summer. Is there an easy way to
> identify those cells that are unimodal and those that are
> bimodal?
Hi Mike

I do not thing there is any readily applied method to do so.
I do think there are tests that require that a histogram be created
and then there is some measure of the "distance" between the peaks.

The following may be applicable. You might have to have a variable delta
depending on the location.

http://www.ncl.ucar.edu/Document/Functions/Contributed/local_max_1d.shtml

Good luck
D
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Received on Wed Feb 06 2008 - 17:35:44 MST