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Re: interpolation question [message #48393 is a reply to message #25895]

Thu, 20 April 2006 07:50

chen123.dian
Messages: 4
Registered: April 2006

Junior Member

Thanks, Peter,

Your code works well for 1-D data. It will be nice to extend it to 2-D
data.

Regards,

Chen

Peter Albert wrote:
> Hi Chen,
>
> I haven't tested this extensively, but I would try
>
> nn = y[round(interpol(indgen(n_elements(x)),x, u))]
>
> where "x" and "y" are the, well, x and y values and "u" is the vector
> with x-values for which the nearest neighbours are to be found.
>
> What goes on?
>
> The interpol command interpolates the indices of the x and y vectors to
> the new locations, round actually finds the nearest neighbour in terms
> of index, and then we just assign y with those indices.
>
> Regards,
>
> Peter

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[Message index]

		Interpolation question By: rkj on Wed, 25 July 2001 11:18
		Re: interpolation question By: chen123.dian on Thu, 20 April 2006 07:50
		Re: interpolation question By: Mark Hadfield on Thu, 20 April 2006 12:26
		Re: interpolation question By: peter.albert@gmx.de on Thu, 20 April 2006 08:47
		Re: interpolation question By: peter.albert@gmx.de on Thu, 20 April 2006 01:20
		Re: interpolation question By: news.verizon.net on Mon, 24 April 2006 12:47
		Re: interpolation question By: Paul Van Delst[1] on Mon, 24 April 2006 12:09
		Re: interpolation question By: Jo Klein on Mon, 24 April 2006 12:04
		Re: interpolation question By: chen123.dian on Mon, 24 April 2006 11:35
		Re: Interpolation question By: mchinand on Thu, 03 August 2006 09:01
		file_lines and expand path By: FL on Fri, 04 August 2006 08:23
		Re: Interpolation question By: greg michael on Thu, 03 August 2006 04:04
		Re: Interpolation question By: Mike Wallace on Wed, 02 August 2006 13:34
		Re: Interpolation question By: JD Smith on Wed, 02 August 2006 09:31
		Re: Interpolation question By: mchinand on Wed, 02 August 2006 09:37

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