Level 2 Help for OTF1

 An input image  which the user wishes to Fourier Transform.
 The FT will be taken of each line and the components then averaged.
 Restriction on input record length is that it not exceed 2048 samples.
 
 If no input image is specified, data may be specified through the
 ESF  or LSF parameters.  If no data are specified, OFT1 will run an
 internal sinc-function test case.

 Optional output of Real and Imaginary Fourier Transform components.
 Output is 124 triplets of Real*4 numbers organized as:
   [Frequency,Real,Imaginary],
 from 1.0 cycles/sample to 0.484 cycles/sample.

 INTEGER-OPTIONAL
 Specifies the SL,SS,NL,NS of the image for which the FT will be taken
 of each line separately and then the transforms will be averaged.

 REAL-OPTIONAL
 Inputs a string of real arguments which one desires to take the FT of.
 This is limited to 256 elements.

 REAL-OPTIONAL
 Input string of real Line Spread Function values for which an OTF is
 desired. This is limited to 256 element.

 STRING-OPTIONAL
 Specifies the filename to receive the output gnuplot instructions.

 STRING-OPTIONAL
 Turns on PLOT of ESF, LSF and FFT of intermediate products.

 STRING-OPTIONAL
 Plot data with Gnuplot or in EPS format. For both PLOTOUT and PLOTPSF.

 KEYWORD-OPTIONAL
 Turns on diaganostic printout.

 KEYWORD-OPTIONAL
 Creates SINC function and branches to LSF processing.

 INTEGER-OPTIONAL
 Specifies allowable noise level in LSF for finding end points.

 KEYWORD-OPTIONAL
 Cauese the input data to be reflected about the last input data
 point in order to fill in unspecified locations. The program must
 eventually have a data string which is a power of 2 in length. The
 default is to fill with zeros.

 KEYWORD-OPTIONAL
 Causes missing data to be set equal to the mean of input data.
 Default is to fill with zeros.

 KEYWORD-OPTIONAL
 Causes the data to not be normalized so that its sum is unity.
 Default is to normalize the input LSF.

 KEYWORD-OPTIONAL
 Suppresses the printout of the full tabular listing.  This listing
 normally includes FOR EACH POINT IN FREQUENCY:
 CYCLES/SAMPLE, FREQUENCY, REAL, IMAGINARY, INTENSITY, AMPLITUDE,
 PHASE and WAVELENGTH SHIFT.
 The default is to print the table.

 REAL-OPTIONAL
 Defines the time interval between data points. Default is 1.0 and defines
 the frequency in cycles per sample.

 REAL-OPTIONAL
 Specifies the scale factor used to plot the phase values so that the
 values are easier to read on the plot.
 The scale factor will be printed on the plot
 (e.g., PHASE (RAD) MULTIPLY *   2.00  if PZOOM =2.0)

 STRING-OPTIONAL
 Specifies the name of a file to receive tabular output.  This file
 contains ASCII text in tab-delimited form.  The columns of the table
 contain Frequency, Amplitude and Phase.

 keyword - OPTIONAL
 Specifies whether to include column headers in the ASCII TABLE.
 COLHDR specifies to include the headers.  NOCOLHDR specifies no headers.
 The headers are "FREQUENCY", "AMPLITUDE" and "PHASE".
 Default is to put headers in the table.

 keyword - OPTIONAL - Valid=(phase,nophase)
 Specifies whether to include a column for Phase in the ASCII table.
 Frequency and Amplitude are always included.  Default is to include it.