AIPS HELP file for DOINVERS in 31DEC24
As of Sat Oct 12 12:31:56 2024
HELP SECTION
DOINVERS
Type: Adverb (logical, > 0 => true)
Use: If true, do the reverse of the "normal" operation.
Null Value: false (-1)
Tasks:
Verbs:
EVLA..........Puts the list of eVLA antennas in the current file on
stack. DOINVERS > 0 returns non-EVLA antennas.
HSA...........Puts the list of HSA antennas in the current file on
stack. DOINVERS > 0 returns non-HSA antennas.
HUEWEDGE......Show a wedge on the TV suitable for TVHUEINT displays.
DOINVERS > 0 puts the intensity wedge on the long axis
and the hue on the short axis.
IMSTAT........Returns statistics of a sub-image. DOINVERS > 0 does
statistics outside BLC to TRC.
MAXFIT........Returns pixel position and image intensity at a maximum.
DOINVERS > 0 fits a peak in the negative of the image,
i.e. it fits a hole in the image.
TVANOT........Verb to load anotation to the TV image or graphics.
DOINVERS > 0 writes the string vertically.
TVSTAT........Find the mean and RMS in a blotch region on the TV.
DOINVERS > 0 finds statistics outside the blotch
region.
VLA...........Puts the list of VLA antennas in the current file on
stack. DOINVERS > 0 lists the non-VLA antennas.
VLBA..........Puts the list of VLBA antennas in the current file on
stack. DOINVERS > 0 returns non-VLBA stations.
Procedures:
TVMAXFIT......Displays fit pixel positions and intensity at maxima on
TV. DOINVERS > 0 fits a peak in the negative of the
image, i.e. it fits a hole in the image.
Tasks:
BLANK.........Blank regions inside (DOINVERS false) or outside
(DOINVERS true) blotch regions drawn on the TV.
Ignores DOINVERS on other blanking methods.
BLSUM.........Determine image statistics inside (DOINVERS false) or
outside (DOINVERS true) blotch regions drawn on the TV.
IMEAN.........Displays the mean & extrema and plots histogram of an
image. DOINVERS > 0 uses the region outside BLC - TRC
for the histogram.
ISPEC.........Plots and prints spectrum of region of a cube.
DOINVERS true causes the spectrum to be found using
only pixels outside the specified CLBOXes.
PBCOR.........Task to apply or correct an image for a primary beam.
DOINVERS > 0 causes the image to be multiplied by the
primary beam,
PRTAB.........Prints any table-format extension file. DOINVERS > 0
causes only those rows not matching specified values
to be printed.
RSPEC.........Plots and prints spectrum of rms of a cube. DOINVERS >
0 computes the rms outside the specified CLBOXes.
SPCOR.........Task to correct an image for a primary beam and spectral
index. DOINVERS > 0 multiplies the image by the
primary beam and undoes the spectral-index correction.
TAPLT.........Plots data from a Table extension file.
TVCPS.........Task to copy a TV screen-image to a PostScript file.
DOINVERS > 0 plolts only those rows that do not match
the selection criteria.
VLANT.........Applies VLA/EVLA antenna position corrections from OPs
files. DOINVERS > 0 undoes the correction.
XYDIF.........Find/apply X minus Y linear polarization phase
difference. DOINVERS > 0 adds 180 degrees to the
solutions.
EXPLAIN SECTION