# AIPS HELP file for FUNCTYPE in 31DEC24

### HELP SECTION

FUNCTYPE
Use:  The function type associated with a task or a verb.  The function
is designated by two characters.
'LN' for linear,                 -> x
'LG' for logarithmic,            -> log10 (1+9*x)
'L2' for extra logarithmic       -> log10 (1+99*x) / 2
'SQ' for square root,            -> sqrt (x)
'NE' for negative linear,        -> 1 - x
'NG' for negative logarithmic,   -> log10 (10 - 9*x)
'N2' for negative extra logarithmic -> log10 (100-99*x) / 2
'NQ' for negative square root.   -> sqrt (1-x)
where x is between 0 and 1 and is usually taken from
x = (Map(i,j) - Pixr(1)) / (Pixr(2) - Pixr(1))
x = max (0, min (1, x))
Unrecognized codes are taken as 'LN'.
Null value: '  '
Null value assignment varies with task or verb.

Verbs:
TVCUBE........Verb to load a cube into tv channel(s) & run a movie.
TVLOD.........Verb to load an image into a TV channel.
TVMOVIE.......Verb to load a cube into tv channel(s) & run a movie.
TVROAM........Load up to 16 TV image planes and roam a subset thereof.
Procedures:
coordinate.
TVALL.........Procedure loads image to TV, shows labeled wedge,
enhances.
ALVAR.........Plots the Allan Variance statistic of a UV data set.
FUNCTYPE selects the use or lack of use of LOG on the
axes.
BLANK.........Blanks out selected, e.g. non-signal, portions of an
image.
BLSUM.........Sums images over irregular sub-images, displays spectra.
EVAUV.........Subtracts & divides a model into UV data, does statistics
on results.  FUNCTYPE selects log or linear histograms.
FILIT.........Interactive BOXFILE editing with facet images.
GAL...........Determine parameters from a velocity field.  FUNCTYPE
selects the type of rotation curve.
GREYS.........Plots images as contours over multi-level grey.
IMEAN.........Displays the mean & extrema and plots histogram of an
image.  FUNCTYPE selects log or linear histograms.
IMLHS.........Converts images to luminosity/hue TV display.  FUNCTYPE
selects log or linear for the ntensity image.
IMVIM.........Plots one image's values against another's.  FUNCTYPE
selects log or linear scaling of symbols in 1 OPTYPE.
IRING.........Integrates intensity / flux in rings / ellipses.
FUNCTYPE selects log or linear Y axis for radial
intensity distribution.
KNTR..........Make a contour/grey plot file from an image w multiple
panels.
LWPLA.........Translates plot file(s) to a PostScript printer or file.
MARSP.........Check planetary polarization angles, plot histogram of
differences.
MOMNT.........Calculates images of moments along x-axis (vel, freq,
ch).  FUNCTYPE selects the smoothing function type.
PCHIS.........Generates a histogram plot file from text input, e.g.
from PCRMS.  FUNCTYPE selects log or linear histograms.
PCNTR.........Generate plot file with contours plus polarization
vectors.
PLAYR.........Task to load one or two images and play with them on the
TV.
PRTAN.........Prints the contents of the ANtenna extension file.
FUNCTYPE slecects log or linear antenna location plot.
RFLAG.........Flags data set based on time and freq rms in fringe
visibilities.  FUNCTYPE selects log or linear histograms.
RGBMP.........Task to create an RGB image from the 3rd dim of an image.
RIRMS.........Computes rms of real/imag of a selected subset of a uv
data set
SERCH.........Finds line signals in transposed data cube.  FUNCTYPE
selects log or linear histograms.
TVIEW.........Display image cube in all 3 transpositions with rotation
& reference.
TVSPC.........Display images and spectra from a cube.
UVRMS.........Computes statistics of a selected subset of a uv data
set.  FUNCTYPE selects log or linear histograms.
WARP..........Model warps in Galaxies.  FUNCTYPE selects the type of
rotation curve.

AIPS