Re: How to use Save/Get for interpolation of unstructured
- To: mathgroup at smc.vnet.net
- Subject: [mg125402] Re: How to use Save/Get for interpolation of unstructured
- From: Ted Sariyski <tsariysk at craft-tech.com>
- Date: Mon, 12 Mar 2012 04:08:11 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <jj7dri$2ds$1@smc.vnet.net> <201203110906.EAA19348@smc.vnet.net>
On 3/11/2012 5:06 AM, David Bailey wrote: > On 07/03/2012 10:38, Ted Sariyski wrote: >> Hi, >> >> I posted this question a couple of days ago but did not get any >> response. Meanwhile I noticed that the Save-d interpolation data contains >> "NDSolve`FEM`ElementMesh", which may relates to my problem. Let me >> restate the question. >> >> I have 2D unstructured data in the form {{{1.22001, 0.00024605}, >> 0.816237}, {{1.22334, 0.000250332},0.436219},... } (connectivity is also >> available but I do not know how to use it with Mathematica). >> >> Interpolation issues a warning: >> >> "Interpolation::udeg: Interpolation on unstructured grids is currently >> only supported for InterpolationOrder->1 or InterpolationOrder->All. >> Order will be reduced to 1.>>", >> >> The warning is not an issue for me, the problem is that I cannot use >> Save/Get for this interpolation function. After Get the interpolation >> function instead of a number returns: >> >> intp[1., .8] >> InterpolatingFunction[{{0.000905256237704326, 1.9993734385285347}, {0.00024605021944692736, 0.9989678166248219}}, >> {4, 4225, 0, {10880, 2}, {2, 2}, 0, 0, 0, 0, Automatic}, >> {NDSolve`FEM`ElementMesh[{{1.220009724772626, 0.00024605021944692736}, >> {1.223336731504134, 0.0002503318707254048}, {1.2273720422942693, ... >> >> which is the non-evaluated content of the Save-d file. >> >> What is the right way to use Save/Get for interpolation of unstructured >> data? >> >> Any help will be highly appreciated. >> Thanks, >> --Ted > I think it would help to post some actual code for this. In general, > surely if you save an interpolation function, you would expect this > function to be recovered using Get - so I cam't see what the issues is. > > David Bailey > http://www.dbaileyconsultancy.co.uk > > data = Table[{{Random[], Random[]}, Random[]}, {i, 1, 10}]; intp = Interpolation[data]; intp[0.1, 0.2] Out[]: 1.110174 Save["intp.mat", intp]; Quit[] Get["intp.mat"]; intp[0.1, 0.7] Out[]: intp[0.1, 0.7] InterpolatingFunction[{{0.141559,0.972136},{0.0916656,0.927415}},{4,4225,0,{10,2},{2,2},0,0,0,0,Automatic},{NDSolve`FEM`ElementMesh[{{0.141559,0.972136},{0.0916656,0.927415}},{NDSolve`FEM`TriangleElement[<12>]}]},{0.106611,0.195957,0.105951,0.417478,0.901584,0.324786,0.696795,0.424483,0.192741,0.949504},{Automatic}][0.1,0.7]
- References:
- Re: How to use Save/Get for interpolation of unstructured data?
- From: David Bailey <dave@removedbailey.co.uk>
- Re: How to use Save/Get for interpolation of unstructured data?