Generate a homogeneous grid.
[g]=NARVAL_T_Grid(l,c,Lx,Ly)
number of nodes per line.
number of nodes per column.
x-side of the network area.
y-side of the network area.
network graph.
NARVAL_T_Grid creates a uniform grid topology g of size l lines by c columns inside a rectangle area with x-side Lx and y-side Ly.