On Fri, Oct 05, 2007 at 09:45:11PM -0400, Kamaraju S Kusumanchi wrote: > Thomas H. George wrote: > > > I'm feeling stupid. I used to have a math package which inverted > > matrices to solve systems of linear equations - i.e. enter the matrix > > and the y values and the program inverts the matrix and reports the x > > values. I know how to do it manually but it is laborious for large > > matrices. Perhaps Openoffice.calc/solver does this but it is not clear > > to me how to enter data for solver to do this. apt-cache search matrix > > |grep inversion doesn't turn up anything. > > > > Would someone please beat me over the head and point me to a simple > > package to do this job? > > Libraries (to call from C, C++, Fortran 90 codes): > > Petsc - pretty much everyone in the numerical analysis community rely on > this for solving large scale linear problems. Has good parallelization > (MPI) support, lot of sparse, direct solvers etc., > > lapack95 - Good if you are using fortran as your programming language. Has > been around for sometime. Code is well tested but does not have as many > routines as petsc. No parallel solvers or sparse solvers AFAIK. > > IMSL - proprietary. > > Software suites: > > Matlab - proprietary, comes with a good GUI, lots of routines to plot > graphs, contours etc., contains lot of sparse solvers. > > Octave - Use versions > 2.9.12 for better experience. Older versions are > incompatible with newer versions. Does not have a GUI provided by the > upstream, plotting capabilities are kind of limited. Does not have that > many sparse solvers. But if it works, it does the job well and the code is > actively developed. It integrates well with Linux (for example it uses > gnuplot for plotting, lapack for solving system of matrices etc.,).
Add scipy to that list. The scientific extension to the python language. Oli -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
