
Re: How to use Save/Get for interpolation of unstructured data?
Posted:
Mar 8, 2012 4:42 AM


On Wed, 7 Mar 2012, Ted Sariyski wrote:
> Hi, > > I posted this question a couple of days ago but did not get any > response. Meanwhile I noticed that the Saved 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 nonevaluated content of the Saved file. > > What is the right way to use Save/Get for interpolation of unstructured > data? > > Any help will be highly appreciated. > Thanks, > Ted >
Ted,
that's a bug. I think you are probably best off saving the raw data via e.g. Save and then reconstruct the interpolation once you read the data back in.
Oliver

