Update the read_sigma function to better deal with geometric distributions. Also clean up the code to read the parameters from the input file (this should be a bit more robust) and add a few checks the input is correct
Add a function description to match the format of the other tools in the toolbox. Also reformat the code to MATLAB standard format (indentation etc.)
Fix some remaining FORTRAN code (do loop and float function) to MATLAB. Also add a function description to match the format of the other tools in the toolbox. Also reformat the code to MATLAB standard format (indentation etc.).