sfescnband2 (2.0-git)
Solution of escape equations by hybrid solver with narrow band for 2-D (an)isotropic media.

        sfescnband2 < spdom.rsf > out.rsf vspl=vspline.rsf na=360 mdist=SF_HUGE morder=ESC2_MORDER atraced=n mtraced=n cmix=y tracebc=y verb=n

bool atraced=n [y/n]
true - output map of all traced points
bool cmix=y [y/n]
true - check for color mixing
float mdist=SF_HUGE
Maximum distance between points in F-D stencil
int morder=ESC2_MORDER
Maximum order in F-D stencil
bool mtraced=n [y/n]
true - output map of points traced because of mdist criterion
int na=360
Number of phase angles
bool tracebc=y [y/n]
n - do not trace B.C. points
bool verb=n [y/n]
verbosity flag
string vspl=
Spline coefficients for velocity model (auxiliary input file name)