AIPS HELP file for DOBLANK in 31DEC25

As of Sat Jul 5 15:53:05 2025

HELP SECTION

DOBLANK
Type: Adverb  (Logical,  > 0  =>  true)
Use:  To control the handling of blanking and/or blanked pixels.
      The actual meaning depends on the task (see below).
Null value:  0 false
Procedures:
   VLACLCAL...Runs CLCAL and prints the results with LISTR.
Tasks:
   BPPLT......Plots selected contents of bandpass (BP) files versus
              time.
   CHKFC......Makes images of Clean boxes from Boxfile.  DOBLANK > 0
              causes magic blanks to be written outside Clean boxes.
   CLCAL......Merges and smooths SN tables, applies them to CL tables.
              DOBLANK controls how blanked (failed) solutions are
              handled.
   CLSMO......Smooths a calibration CL table.  DOBLANK controls whether
              good or failed solutions are the ones changed.
   CONVL......Convolves an image with a gaussian or another image.
              DOBLANK > 0 causes the smoothed output to be blanked at
              those pixels which were blanked on input.
   ELFIT......Plots/fits selected contents of SN, TY, SY, PC or CL
              files.  DOBLANK > 0 controls the plot symbol used for
              blanked data, otherwise they are omitted.
   KNTR.......Make a contour/grey plot file from an image w multiple
              panels.  DOBLANK > 0 causes the boundary between blanked
              and normal pixels to be plotted.
   MASKS......Makes mask image of Clean boxes from boxfile.  DOBLANK > 0
              causes the pixels outside of Clean boxes to be magic
              blanks.
   SNBLP......Plots selected contents of SN or CL files on a baseline
              basis.  DOBLANK > 0 selects the plot symbol for blanked
              data which are otherwise omitted.
   SNFIT......Fits parabola to SN amplitudes and plots result.
              DOBLANK>0 selects the plot symbol for blanked data which
              are otherwise omitted.
   SNIFS......Plots selected contents of SN, TY, SY, PC or CL files by
              IF.  DOBLANK > 0 selects the plot symbol for blanked data
              which are otherwise omitted.
   SNPLT......Plots selected contents of SN, SY, TY, PC or CL files
              versus time.  DOBLANK > 0 selects the plot symbol for
              blanked data which are otherwise omitted.
   SNSMO......Smooths and filters a calibration SN table.  DOBLANK
              controls whther good or blanked solutions (or both) are
              changed.
   SPCOR......Task to correct an image for a primary beam and spectral
              index.  DOBLANK > 0 causes the output to be blanked where
              the spectral index image is blanked.  Else output is the
              beam corrected input with no spectral index alteration.
   SYHIS......Task to clip, filter, smooth SY tables and plot
              histograms.
   SYVSN......Plots selected SY/TY data with SN solution values versus
              time.  DOBLANK > 0 controls the plt symbol used for
              blanked data which are otherwise omitted.
   TYSMO......Smooths and filters a calibration TY or SY table.  DOBLANK
              controls whether blanked or good data or both are changed.
   UNSPX......Removes spectral index model from a data cube.  DOBLANK
              controls whether blanked pixels in the model blank the
              output.
   UVHIM......Makes image of the histogram on two user-chosen axes.
              DOBLANK > 0 causes all 0 values to be written with magic
              blanks.

EXPLAIN SECTION