Synopsis
		sfconvkernel < Fin.rsf filter=Ffilter.rsf > Fout.rsf lag=Flag1.rsf lag2=Flag2.rsf lag3=Flag3.rsf adj=n n=1

Applies a 1,2, or 3D convolution kernel or its adjoint
The filter is composed by n coefficients.

example: 2d laplacian

1
1 -4 1
1

filter: 1 1 -4 1 1
lag1 (vertical lag) : 0 1 0 -1 0
lag2 (horizontal lag): -1 0 0 0 1

Parameters
		bool adj=n [y/n]   file filter= auxiliary input file name   file lag= auxiliary input file name   file lag2= auxiliary input file name   file lag3= auxiliary input file name   int n=1 ------------------------------------------------------------