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Re: Fractional Pixels Origin? [message #47632 is a reply to message #47583]

Fri, 17 February 2006 07:40

CJCrockett
Messages: 3
Registered: February 2006

Junior Member

Okay, may be this bad form, but I'm going to respond to my own
question. :-)

I tried a very simple test:
a = fltarr(100,100)
a[49:51,49:51] = 1.
cntrd,a,50,50,xcen,ycen,1.5

print,xcen,ycen
50.0000 50.0000

So, I made a 3x3 box centered on [50,50]. The centroid algorithm
reports that the centroid is located at 50.000,50.000. This tells me
that CNTRD sets the pixel origin at the center of the pixel. Does this
seem like a reasonable test?

Regards,
Christopher Crockett
University of Maryland

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[Message index]

		Fractional Pixels Origin? By: CJCrockett on Wed, 15 February 2006 12:53
		Re: Fractional Pixels Origin? By: JD Smith on Tue, 21 February 2006 17:25
		Re: Fractional Pixels Origin? By: mmiller3 on Wed, 22 February 2006 06:30
		Re: Fractional Pixels Origin? By: Mark Hadfield on Tue, 21 February 2006 13:44
		Re: Fractional Pixels Origin? By: David Fanning on Tue, 21 February 2006 05:29
		Re: Fractional Pixels Origin? By: JD Smith on Mon, 20 February 2006 10:56
		Re: Fractional Pixels Origin? By: Mark Hadfield on Sun, 19 February 2006 13:00
		Re: Fractional Pixels Origin? By: Mark Hadfield on Sun, 19 February 2006 12:50
		Re: Fractional Pixels Origin? By: Greg Hennessy on Fri, 17 February 2006 17:14
		Re: Fractional Pixels Origin? By: David Fanning on Fri, 17 February 2006 14:28
		Re: Fractional Pixels Origin? By: CJCrockett on Fri, 17 February 2006 07:40
		Re: Fractional Pixels Origin? By: David Fanning on Fri, 17 February 2006 07:37
		Re: Fractional Pixels Origin? By: William C. Keel on Mon, 06 March 2006 11:21
		Re: Fractional Pixels Origin? By: CJCrockett on Fri, 17 February 2006 07:24
		Re: Fractional Pixels Origin? By: David Fanning on Fri, 17 February 2006 06:19

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