Re: Interpolating matrix

*To*: mathgroup at smc.vnet.net*Subject*: [mg45529] Re: Interpolating matrix*From*: Paul Abbott <paul at physics.uwa.edu.au>*Date*: Mon, 12 Jan 2004 02:15:39 -0500 (EST)*Organization*: The University of Western Australia*References*: <btndag$37$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

In article <btndag$37$1 at smc.vnet.net>, Zsolt Regaly <rezso at general.elte.hu> wrote: > Hi > > Could anybody help me to find out how can I interpolate a matrix? > > Let'us have a 10x10 matrix and I'd like to make a DensityPlot by > resolution of 100x100 for example. Use Interpolation. Here is some (indexed) data: Table[{x, y, Cos[x y]}, {x, 0, 1, 0.2}, {y, 0, 1, 0.2}] Interpolate (after converting to a one-dimensional data list), cosint=Interpolation[Flatten[%, 1]] and then plot: DensityPlot[cosint[x,y],{x,0,1},{y,0,1},PlotPoints->100, Mesh-> False]; Cheers, Paul -- Paul Abbott Phone: +61 8 9380 2734 School of Physics, M013 Fax: +61 8 9380 1014 The University of Western Australia (CRICOS Provider No 00126G) 35 Stirling Highway Crawley WA 6009 mailto:paul at physics.uwa.edu.au AUSTRALIA http://physics.uwa.edu.au/~paul