compute the geometrically necessary dislocation
Formulae are taken from the paper:
Pantleon, Resolving the geometrically necessary dislocation content by conventional electron backscattering diffraction, Scripta Materialia, 2008
Syntax
gnd = calcGND(ebsd,dS)Input
| ebsd | EBSDsquare | 
| dS | dislocationSystem | 
Output
| gnd | dislocation energy | 
| rho | dislocation density per dislocation system |