SDS_MASKS(3)



NAME

     sds_masks: Generates sets of spherical-harmonic values


SYNOPSIS

     #include <soi_fun.h>
     int sds_masks ( l_min, l_max,  delta_m,   fft_rows, z_max,
                       mask_file_name,  masks)

          int l_min, l_max;
          int delta_m;
          int data_rows;
          double z_max;
          char * mask_file_name;
          SDS * masks;




DESCRIPTION

      sds_masks()  Generates  values  for   spherical   harmonics
     Y_lm(z)  from z=0 to z=z_max.  in increments calculated from
     the number of samples for each mode:  data_rows.  The degree
     ranges  for  l_min through l_max in steps of one.  The order
     ranges from l_min through l_max in steps of delta_m.

     The function does not return data;, it writes it to a  file:
     "mask_file_name."   The  reason  for  this is DEC's limit on
     memory.  Large  mask  files  cannot  be  stored  in  virtual
     memory.  A "segmentation fault" would occur.



STATUS

     The tested program, which did compile at one time, no longer
     compiled  due to changes in SDS.  The current version, which
     compiles, has never been run.


HISTORY

     1993-04-26     Lyle Bacon     created for SOI V 0.8