mat_input

%mat_input.m
%
%Routine to input matrix elements of generating matrices. Elements are
%entered subsequently and the whole symbolic matrix will be saved as
%'M<x>.mat' with <x> the number of the generating matrix to be entered
%
%input:  M<ij> ... matrix elements
%        nr    ... generator #
%output: M     ... entered generating matrix


clc;
close all;
clear all;
rep = 1;

while rep
    clear all;

    M = sym([]);%initialize symbolic matrix
    for l = 1:3
        for k = 1:3
            t = sym(input(['M_',num2str(l),num2str(k),' = ']));%input matrix element
            if isempty(t),t=sym(0);end;
            M(l,k) = t;
        end;
    end;
    disp(' ');
    disp('M = ');
    disp(M);
    disp(' ');

    nr = input('Generator Nr.: ');
    if ~isempty(nr)%don't save if nothing is entered
        save(['M',num2str(nr)],'M');%save generating matrix
    end;

    rep = input('Repeat (default = 1):');
    if isempty(rep),rep=1;end;
end;