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Re: filling an empty array [message #48613 is a reply to message #48605]

Thu, 04 May 2006 00:27

greg michael
Messages: 163
Registered: January 2006

Senior Member

But this is a perfect job for pointers - why avoid them?

index_data=ptrarr(32)
dat_x=randomu(0,1000,32)*4-2
dat_y=randomu(0,1000,32)*4-2

FOR i=0,31 DO BEGIN
index_data(i)=ptr_new(where((dat_x(*,i) GE -0.1) AND (dat_x(*,i) LE
0.1) AND $
(dat_y(*,i) GE -0.5) AND (dat_y(*,i) LE 0.5)))
ENDFOR

IDL> print,*index_data[1]
0 29 36 50 62
102 123 241 244 269 284
304 316 390 428 441 443
446 543
544 546 553 564 577
634 685 695 709 717 738
745 752 773 799 852 965

regards,
Greg

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[Message index]

		Re: filling an empty array By: Peter Mason on Thu, 04 May 2006 14:24
		Re: filling an empty array By: JJMeyers2 on Thu, 04 May 2006 08:15
		Re: filling an empty array By: greg michael on Thu, 04 May 2006 00:27
		Re: filling an empty array By: greg michael on Thu, 04 May 2006 00:03
		Re: filling an empty array By: Peter Mason on Wed, 03 May 2006 22:34

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