Direction dependenc of hole masses

[valenhou]

For example, the heavy mass of silicon with diamond structure:
The default setup calculation by using your "Effective mass calculator" is done for the Gamma point to the X point. Is possible to calculate the heavy mass along the gamma point to the L point by using your "Effective mass calculator"? Something is like the bottom part of the following webpage:
http://quantumwise.com/publications/tutorials/item/500-effective-mass-of-electrons-in-silicon#Refs

Thank you very much for your nice utility!