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Re: I have committed a sin CONGRID [message #28384 is a reply to message #28380]

Thu, 06 December 2001 06:22

Jaco van Gorkom
Messages: 97
Registered: November 2000

Member

dmarshall@ivory.trentu.ca wrote:
> I was using CONGRID to resize an RGB image array which is [3,x,y] large
> I just realized CONGRID will not resize the R,G, and B planes separately.
> I will get a kind of smeared/diluted image, which looks OK, but....
> I _know_ it's obvious ... now.

Is it obvious? If you resize to CONGRID(image, 3, newx, newy) ?
From the online help (IDL 5.4):
[...] when shrinking an array, [...] CONGRID just resamples the array.
[when expanding an array,] CONGRID automatically uses linear interpolation
if the input array is 3-dimensional.
So, as long as you do not resize the first dimension (3), shouldn't you be
ok?

Jaco

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[Message index]

		Re: I have committed a sin CONGRID By: dmarshall on Thu, 06 December 2001 07:35
		Re: I have committed a sin CONGRID By: Jaco van Gorkom on Thu, 06 December 2001 06:22

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