AIPS HELP file for DOBLANK in 31DEC25

As of Sun Mar 16 22:50:05 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.
   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