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REBIN Question [message #11091]

Sat, 14 March 1998 00:00

pford
Messages: 33
Registered: September 1996

Member

REBIN question

Either I have uncovered a bug in REBIN in the Mac version of IDL V 5.0.3
or I donï¿½t fully understand how REBIN works. I want to take a 2-D byte
array at_target that is 64X64 in size and make it into a 1-D byte array
with the same number of elements and vis versa. The results are not what
I am expecting so I used the code below to test it. The displayed images
are not even close to each other.

Would someone be kind enough to explain why and how I can do this other
than using the code below(test2) the offending section.

Thanks.

pro test
window,5,xsize= 128, ysize = 128
window,6,xsize= 128, ysize = 128

at_target= bytarr(64,64)
at_target(0:63,0:63) = 255B
at_target(10:20,10:20) = 200B;

wset,5
tvscl, at_target
wset,6
tvscl, rebin(rebin(at_target, 64*64),64,64)
stop
end

pro test2

window,5,xsize= 128, ysize = 128
window,6,xsize= 128, ysize = 128

at_target = bytarr(64,64)
at_target2 = bytarr(64,64)
at_target(0:63,0:63) = 255B
at_target(10:20,10:20) = 200B;

d1target = btarr(64*64)
n=0
for x=0,63 do begin
for y=0,63 do begin
d1target[n] = at_target[x,y]
at_target2 [x,y] = d1target[n]
n = n + 1
endfor; for y=0,63 do begin
endfor; for x=0,63 do begin

wset,5
tvscl, at_target
wset,6
tvscl, at_target2
stop
end

--
Patrick Ford
pford@bcm.tmc.edu

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[Message index]

		REBIN Question By: pford on Sat, 14 March 1998 00:00
		Re: REBIN Question By: pford on Wed, 18 March 1998 00:00
		Re: REBIN Question By: Armand J. L. Jongen on Tue, 17 March 1998 00:00
		Re: rebin question By: hradilv.nospam on Fri, 22 March 2002 09:11
		Re: rebin question By: Mark Fardal on Sun, 24 March 2002 22:50
		Re: rebin question By: Jonathan Joseph on Fri, 22 March 2002 10:40
		Re: rebin question By: Craig Markwardt on Fri, 22 March 2002 10:31
		Re: rebin question By: Jonathan Joseph on Mon, 25 March 2002 14:24
		Re: rebin question By: Mark Hadfield on Mon, 25 March 2002 14:07
		Re: rebin question By: JD Smith on Fri, 22 March 2002 11:49
		Re: rebin question By: Jonathan Joseph on Fri, 22 March 2002 11:20
		Re: rebin question By: David Fanning on Fri, 22 March 2002 11:14
		Re: rebin question By: hradilv.nospam on Fri, 22 March 2002 10:53
		Re: rebin question By: Jonathan Joseph on Fri, 22 March 2002 10:53

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