CFIT-Generate a spectrum using the cursor

Description:

Figaro function to generate a spectrum by interpolation between points selected interactively using a display device cursor. CFIT assumes that a spectrum has already been displayed by SPLOT, and will generate a new data structure based on the spectrum displayed, with only the data changed.

Parameters:

OUTPUT

The name of the output file to be created. If this is the same as the displayed spectrum, the data in the displayed spectrum will be modified.

CHANGE

Set to mofify points.

REDRAW

Set to redraw the original spectrum.

Source comments:

 C F I T

 Figaro function to generate a spectrum by interpolation
 between points selected interactively using a display
 device cursor.  CFIT assumes that a spectrum has already
 been displayed by SPLOT, and will generate a new data
 structure based on the spectrum displayed, with only the
 data changed.

 Command parameters -

 OUTPUT      (Character) The name of the output file to
             be created.  If this is the same as the displayed
             spectrum, the data in the displayed spectrum will
             be modified.

 Command keywords -

 CHANGE      Set to mofify points.
 REDRAW      Set to redraw the original spectrum.

 User variables used -  (">" input, "<" output)

 (>) TVFILE  The name of the displayed spectrum
 (>) TVXST   The first displayed x-value
 (>) TVXEN   The last displayed x-value
 (>) TVHIGH  The maximum displayed y-value
 (>) TVLOW   The minimum displayed y-value
 (>) TVCOLOR The GRPLOT code for the plot colour
 (>) SOFT    The device/type string defining the display device

                                          KS / CIT 17th May 1983