SUXMAX - X-windows graph of the MAX, min, or absolute max value on each trace of a SEGY (SU) data set

   suxmax <stdin [optional parameters]                           

 Optional parameters:                                      
 mode=max         max value                          
                  =min min value                           
                  =abs absolute max value                  

 n2=tr.ntr or number of traces in the data set (ntr is an alias for n2)

 d1=tr.d1 or tr.dt/10^6 sampling interval in the fast dimension  
   =.004 for seismic          (if not set)                       
   =1.0 for nonseismic        (if not set)                       

 d2=tr.d2               sampling interval in the slow dimension  
   =1.0                 (if not set)                       

 f1=tr.f1 or tr.delrt/10^3 or 0.0  first sample in the fast dimension  

 f2=tr.f2 or tr.tracr or tr.tracl  first sample in the slow dimension  
   =1.0 for seismic               (if not set)             
   =d2 for nonseismic             (if not set)             

 verbose=0              =1 to print some useful information      

 tmpdir=         if non-empty, use the value as a directory path
                  prefix for storing temporary files; else if the
                  the CWP_TMPDIR environment variable is set use 
                  its value for the path; else use tmpfile()     

 Note that for seismic time domain data, the "fast dimension" is 
 time and the "slow dimension" is usually trace number or range. 
 Also note that "foreign" data tapes may have something unexpected     
 in the d2,f2 fields, use segyclean to clear these if you can afford   
 the processing time or use d2= f2= to over-ride the header values if  
 not.                                                

 See the sumax selfdoc for additional parameter.                 
 See the xgraph selfdoc for the remaining parameters.            


 Credits:

      CWP: John Stockwell, based on Jack Cohen's SU JACKet

 Notes:
      When the number of traces isn't known, we need to count
      the traces for xgraph.  You can make this value "known"
      either by getparring n2 or by having the ntr field set
      in the trace header.  A getparred value takes precedence
      over the value in the trace header.

      When we do have to count the traces, we use the "tmpfile"
      routine because on many machines it is implemented
      as a memory area instead of a disk file.