TRI2UNI - convert a TRIangulated model to UNIformly sampled model 

 tri2uni <triangfile >uniformfile n2= n1= [optional parameters]  

 Required Parameters:                                      
 n1=                     number of samples in the first (fast) dimension
 n2=                     number of samples in the second dimension     

 Optional Parameters:                                      
 d1=1.0                 sampling interval in first (fast) dimension    
 d2=1.0                 sampling interval in second dimension          
 f1=0.0                 first value in dimension 1 sampled       
 f2=0.0                 first value in dimension 2 sampled       

 Note:                                                     
 The triangulated/uniformly-sampled quantity is assumed to be sloth=1/v^2



 AUTHOR:  Dave Hale, Colorado School of Mines, 04/23/91