Ignore my post. It went to the wrong email list. Sorry. On Wed, Oct 16, 2019 at 8:23 AM David Joyner <wdjoy...@gmail.com> wrote:
> > > On Wed, Oct 16, 2019, 8:06 AM Iverson, Joseph W [MATH] <j...@iastate.edu> > wrote: > >> Dear GAP forum, >> >> Does anybody know of a way to efficiently get matrices (say with >> cyclotomic entries) from GAP to MATLAB? For instance, is there a package to >> export matrices as .mat files? >> > > Suggested reply: > > One way to do this is to use GAP within SageMath, which has both a GAP > interface and an Octave interface. > > >> I have been getting by with a jerry-rigged solution where I make GAP >> print a matrix like >> A:=[[1,0],[0,1]];; >> to a file "A.m" containing a single string like >> "A=[1,0;0,1];". >> Then I have MATLAB read the file as a script. That works fine for small >> matrices, but for large ones (or for 3-tensors consisting of lots of >> matrices) it is prohibitively slow, both for GAP to print to the file and >> for MATLAB to interpret the result. >> >> For a sense of scale, at the moment I would like to export 95040 matrices >> each of size 540x540 to MATLAB, preferably as a 3-tensor so that I can >> easily iterate through the list. (The matrices are the image of a >> representation of M12 having degree 540.) >> >> Best regards, >> Joey Iverson >> >> Assistant Professor >> Department of Mathematics >> Iowa State University >> >> _______________________________________________ >> Forum mailing list >> fo...@gap-system.org >> https://mail.gap-system.org/mailman/listinfo/forum >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CAEQuuAWPMkJaL%2B19YKRXf%2BFg93p%3DgC5CmgF7Ghab%3DwMwtWJX%2Bw%40mail.gmail.com.
