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Re: 2D Histogram error [message #94296 is a reply to message #94293]

Fri, 31 March 2017 07:21

wlandsman
Messages: 743
Registered: June 2000

Senior Member

You need at least a 2 elements array to obtain a histogram.

IDL> print,hist_2d(-1,-1)
% HISTOGRAM: Expression must be an array in this context: H.
% Execution halted at: $MAIN$

So don't call hist_2d() unless you have at least 2 elements. --Wayne

if N_elements(index) GE 2 then begin

qdph=hist_2d(data(index).detx,data(index).dety,MAX1=63,MAX2= 63,MIN1=0,MIN2=0)
dph[quad,ebin,*,*]=qdp

endif

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[Message index]

		2D Histogram error By: mitali1203 on Fri, 31 March 2017 04:58
		Re: 2D Histogram error By: wlandsman on Fri, 31 March 2017 07:21
		Re: 2D Histogram error By: Markus Schmassmann on Fri, 31 March 2017 08:14
		Re: 2D Histogram error By: mitali1203 on Sat, 01 April 2017 08:50
		Re: 2D Histogram error By: Markus Schmassmann on Fri, 31 March 2017 07:58

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