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			       RT

       REVTRANS computes the inverse fourier transform of a file
 which contains the fourier transform of another file.  The input file
 is assumed to have been written by PWRSPEC, or to be in the format
 used by PWRSPEC.  The input format can be REAL*4 or COMPLEX*8.  For 
 REAL*4 files, the real and imaginary parts are assumed to be located in
 every other pixel location.  Files with REAL*4 data can contain subframes
 such as the UM speckle format.  The real part of the inverse transform
 is always written to a REAL*4 file and optionally, the imaginary part
 can be written to a REAL*4 file.

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 Enter an option:                               1-APR-1995 23:04:20.14
 OPTION=RT                                                                     
 REVTRANS, Version 2
 Open the file whose inverse transform is to be computed
 Enter the filename:  (<CR> for default)
 FILE_IN=PTCE
 There is one map in the file
 Reading from the file
  100 rows of  102 pixels in R4 format
 Enter the number of dimensions the transform was based on:  (default = 2)
 DIMENSION=
          2
 Was the number of columns in the original file even?  (default = Y)
 EVEN=
 T
 Enter the name of the file to contain the real part of the inverse transform:
 (default = RPTCE)
 FILE_OUT_REAL=
 RPTCE
 Creating new file
 For the real output file
 Enter the ouput map number(s):  (default = 1)
 MAPS_OUT=
          1
 Enter the name of the file to contain the imaginary part;
 enter "-" for no imaginary file:  (default = IPTCE)
 FILE_OUT_IMAGINARY=
 IPTCE
 Creating new file
 For the imaginary output file
 Enter the ouput map number(s):  (default = 1)
 MAPS_OUT=
          1
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