AIPS HELP file for DOWEIGHT in 31DEC25

As of Fri Nov 14 13:43:31 2025

HELP SECTION

DOWEIGHT
Type: Adverb (logical,  > 0  =>  true)
Use:  True means that some operation using data weights is selected.
Null value:   true (1)
Tasks:
   BPSMO.........Smooths or interpolates bandpass tables to regular
                 times.  DOWEIGHT controls whether weights are used in
                 smothing.
   EDITR.........Interactive baseline-oriented visibility editor using
                 the TV.  DOWEIGHT controls the scaling of error bars.
   FILLM.........Reads VLA on-line/archive format uv data tapes (post
                 Jan 88).   DOWEIGHT > 0 causes data weights to be
                 scaled by the nominal sensitivity.
   FITLD.........Reads FITS files to load images or UV (IDI or UVFITS)
                 data to disk.  DOWEIGHT > 0 causes data weights to be
                 scaled by bandwdith times integration time.
   IMERG.........Merges images of different spatial resolutions.
                 DOWEIGHT > 0 allows correction of the low resolution
                 image to account for the different beams.
   LAYER.........Task to create an RGB image from multiple images.
                 DOWEIGHT > 0 causes the intensity to be also absorbed.
   OTFUV.........Translate 12m on-the-fly line data into AIPS format.
                 DOWEIGHT true means to interpolate the Off and Gain
                 data in time before applying to the On-source data.
   RFLAG.........Flags data set based on time and freq rms in fringe
                 visibilities.  DOWEIGHT controls the writing of a file
                 with channel-dependent weights.
   RMFIT.........Fits 1-dimensional polarization spectrum to Q/U cube.
                 DOWEIGHT > 0 causes the data to be weighted by the
                 values in INFILE or by the rms of the spectral channel
                 image.
   SCIMG.........Full-featured imaging plus self-calibration loop with
                 editing.  DOWEIGHT scales the display of error bars in
                 the editing phase.
   SCMAP.........Imaging plus self-calibration loop with editing.
                 DOWEIGHT scales the display of error bars in the
                 editing phase.
   SERCH.........Finds line signals in transposed data cube.
                 DOWEIGHT > 0 causes the filters to weight by spectral
                 channel image rms.
   SPRMS.........Plots spectral statistics of a selected subset of a uv
                 data set.  DOWEIGHT > 0 causes weights to be used when
                 averaging over baselines.
   SYSOL.........Undoes and re-does nominal sensitivity application for
                 Solar data.  DOWEIGHT >= 0 causes data weights to be
                 computed from the values in the SY table.
   TYAPL.........Undoes and re-does nominal sensitivity application.
                 DOWEIGHT >= 0 causes data weights to be computed from
                 the values in the SY table.
   UFLAG.........Plots and edits data using a uv-plane grid and the TV.
                 DOWEIGHT > 0 causes each cell to contain the weighted
                 average of the data falling in that cell.
   UJOIN.........Modifies UV data converting IFs to spectral channels.
                 DOWEIGHT controls how overlapped channels are handled
                 when there is flagging.
   UVPLT.........Plots data from a UV data base in multiple ways.
                 DOWEIGHT > 0 causes data weights to be used in binning
                 data.
   UVRMS.........Computes statistics of a selected subset of a uv data
                 set.  DOWEIGHT > 0 causes weights to be used when
                 averaging over baselines.
   VBCAL.........Scale visibility amplitudes by antenna based constants.
                 DOWEIGHT > 0 causes weights also to be corrected.
   WETHR.........Plots selected contents of WX tables, flags data based
                 on WX.  DOWEIGHT controls the weighting of weather in
                 opacity computations.

EXPLAIN SECTION