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Re: cutting/grouping [message #85774 is a reply to message #85773]

Thu, 05 September 2013 14:39

Heinz Stege
Messages: 189
Registered: January 2003

Senior Member

Hi Seb,

I have absolutely no knowledge about R. The following may help you, or
may not. Look for the value_locate function in the IDL documentation.
It can reproduce the results of your R calculation:

IDL> a=indgen(10)+1
IDL> b=indgen(6)*2
IDL> pos=value_locate(b,a)
IDL> pos-=b[pos] eq a
IDL> print,b[pos]
0 0 2 2 4
4 6 6 8 8
IDL> print,'('+strtrim(b[pos],2)+','+strtrim(b[pos+1],2)+']'
(0,2] (0,2] (2,4] (2,4] (4,6] (4,6] (6,8] (6,8] (8,10] (8,10]
IDL> u=uniq(pos)
IDL> print,'('+strtrim(b[pos[u]],2)+','+strtrim(b[pos[u]+1],2)+'] '
(0,2] (2,4] (4,6] (6,8] (8,10]

Cheers, Heinz

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[Message index]

		cutting/grouping By: Seb on Thu, 05 September 2013 08:41
		Re: cutting/grouping By: Heinz Stege on Thu, 05 September 2013 14:39
		Re: cutting/grouping By: Seb on Thu, 05 September 2013 21:15
		Re: cutting/grouping By: Heinz Stege on Fri, 06 September 2013 05:48

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