##Usage Run using:
./Ising2D {lattice size}x{lattice size}-B{magnetic field}
For example:
./Ising2D 10x10-B0
initializes a 10x10 lattice without an external field (B = 0).
##Command-line flags
+r
Only generate a report, don't re-calculate. For example:
./Ising2D 10x10-B0 +r
-r
Only calculate, don't generate a report.
./Ising2D 10x10-B0 -r
Default (no flags): calculate and generate a report.
Reports are generated using R.