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Re: histogram produces extra bin in 64-bit IDL 8.0 [message #76105 is a reply to message #76023] Wed, 18 May 2011 08:04 Go to previous message
war is currently offline  war
Messages: 21
Registered: December 2003
Junior Member
I just posted the following message but then I saw there just was a
topic about more or less the similar problem. In my case, it is just
about using different binsize and max.

Can somebody explain why the following gives different number of
elements with the HISTOGRAM function?

IDL> hist_spd= HISTOGRAM(velocity[indb],binsize= .20,min=0.,max=1.40)
IDL> print,hist_spd
6 16 23 0 0
0 0
IDL> hist_spd= HISTOGRAM(velocity[indb],binsize= 20.,min=0.,max=140.)
IDL> print,hist_spd
45 0 0 0 0
0 0 0

(whatever velocity content is)
My main concern is the number of elements returned by the function.
The only difference between the 2 command is that I multiplied the
binsize and max with 100. BUT they return 7 and 8 elements?

I would expect they both return the same number of elements.

Thanks,

Andry

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