Program sftxt2rsf | Text (ASCII) file (like a matrix) to RSF file 
[SYNOPSIS]
sftxt2rsf > out.rsf n1= n2= d1=0.004 d2=1 o1=0 o2=0 tfile=
[COMMENTS]
Convert a file containing a two dimensional array of ASCII floats to 
.rsf format.  n1*n2*sizeof(float) bytes are read from the input file
and the rsf file is written to standard output.  If you have a higher
dimension file (3d, 4d, ..) you can change n2, n3, etc using sfput.  

Example that converts and plots a ascii velocity grid:

<Vp sftxt2rsf n1=400 d1=1 n2=1600 d2=1 o2=101 \
| sfgrey color=jet scalebar=y allpos=y | sfpen


[PARAMETERS]
float   | d1 | =0.004 |   | 	
float   | d2 | =1 |   | 	
int     | n1 | = |   | 	
int     | n2 | = |   | 	
float   | o1 | =0 |   | 	
float   | o2 | =0 |   | 	
string  | tfile | = |   | 	
[DIRECTORY]
user/chenyk
