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setintersection assumes sets have no repetitions? [message #83312]

Sat, 23 February 2013 12:46

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

I am using Coyote's set functions, and I noticed that when I use some
(not any) sets with repetitions as input, it crashes:

IDL>
a=[1,2,3,4,5]
IDL>
b=[1,2,2,2]
IDL>
print,setintersection(a,b,indices_a=ia,indices_b=ib,position s=pos)
% Compiled module: SETINTERSECTION.
% Compiled module: REVERSEINDICES.
% Compiled module: ERROR_MESSAGE.

Traceback Report from SETINTERSECTION:

% Out of range subscript encountered: BINDICES.
% Execution halted at: SETINTERSECTION 192 /software/idl/
others/idl-coyote-read-only/coyote/setintersection.pro
% $MAIN$
-1

Is this the expected behavior? Are the input sets supposed not to have
repetitions? The documentation suggests they may have repeated
elements, thus making the positions array different from indices_a.

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[Message index]

		setintersection assumes sets have no repetitions? By: penteado on Sat, 23 February 2013 12:46
		Re: setintersection assumes sets have no repetitions? By: David Fanning on Tue, 05 March 2013 11:00
		Re: setintersection assumes sets have no repetitions? By: bobgstockwell on Thu, 14 March 2013 13:29

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