https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Fourier-transform-grid/m-p/884319#M9909 <DIV style="margin:0px;"></DIV> <BR />Hi Nandan,<BR /><BR />The two-dimensional FFT functions provided by Intel MKL compute the transform onthe data sampled on a rectangular grid. MKL doesn't support DFT on the data sampled hexagonally or otherwise non-rectangular.<BR /><BR />Thanks<BR />Dima<BR /> Mon, 31 Aug 2009 05:47:46 GMT Dmitry_B_Intel 2009-08-31T05:47:46Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Fourier-transform-grid/m-p/884318#M9908 <BR />Hi,<BR /><BR />I am using the 2 dimensional forward transform and back transform routine of<BR />MKL. I was wondering whether it is necessary to have the function <BR />(for which the forward transfrom is evaluated) defined on<BR />a orthogonal grid, or can it also be defined on a non-orthogonal grid?<BR /><BR />Thanks in advance,<BR /><BR />Regards,<BR /><BR />Nandan. Fri, 28 Aug 2009 08:18:57 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Fourier-transform-grid/m-p/884318#M9908 nandan_tandongmail_c 2009-08-28T08:18:57Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Fourier-transform-grid/m-p/884319#M9909 <DIV style="margin:0px;"></DIV> <BR />Hi Nandan,<BR /><BR />The two-dimensional FFT functions provided by Intel MKL compute the transform onthe data sampled on a rectangular grid. MKL doesn't support DFT on the data sampled hexagonally or otherwise non-rectangular.<BR /><BR />Thanks<BR />Dima<BR /> Mon, 31 Aug 2009 05:47:46 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Fourier-transform-grid/m-p/884319#M9909 Dmitry_B_Intel 2009-08-31T05:47:46Z