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Re: Where is the largest point ? [message #26140 is a reply to message #26138]

Wed, 08 August 2001 13:13

btt
Messages: 345
Registered: December 2000

Senior Member

Hi,

Take a peek at the MAX function (check the online help)

maxVal = Max(Arrat, maxIndex)

maxVal will return the maximum value
maxIndex will return the index of the maximum value within the array.
If there is more than one value qualifying as MAX, then only the index
of the first maxVal encountered is returned in maxIndex.

Ben

Guillaume Dargaud wrote:
>
> I'm still pretty basic at IDL and a lot of the _no loop_ concepts escape me
> entirely (I'm too used to C and such).
> If I have a 2D matrix, how do I find where is the maximum ?
> Say:
>
> Mat=FltArr(NbX, NbY)
> ...
> [Xmax, YMax] = Where( Mat eq Max(Mat) )
>
> or something like that ?
> --
> Guillaume Dargaud
> Colorado State University - Dept of Atmospheric Science
> http://rome.atmos.colostate.edu/
> "If those folks in Kansas are right about evolution never having happened,
> I sure hope it happens soon." - Michael Sheinbaum.

--
Ben Tupper
Bigelow Laboratory for Ocean Sciences
180 McKown Point Rd.
W. Boothbay Harbor, ME 04575
btupper@bigelow.org

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[Message index]

		Re: Where is the largest point ? By: Guillaume Dargaud on Wed, 08 August 2001 14:03
		Re: Where is the largest point ? By: tam on Wed, 08 August 2001 13:50
		Re: Where is the largest point ? By: btt on Wed, 08 August 2001 13:13

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