Program sffaultrbf1d | Compute RBF across fault using fault attribute computed by Sobel filter. 
[SYNOPSIS]
sffaultrbf1d < in.rsf > out.rsf i0= scale=1.0 r0=1.0 useinput=y
[PARAMETERS]
int     | i0 | = |   | 	Reference trace position. 
float   | r0 | =1.0 |   | 	Reference radial in RBF. 
float   | scale | =1.0 |   | 	Fault attribute scaling factor (0.0 ~ factor). 
bool    | useinput | =y |  [y/n] | 	Flag: whether use the input fault attribute. 
[DIRECTORY]
user/yunzhi
