ANALYSIS tasks

COMBIN

Combine sets to create new sets using mathematical expressions. (combin.shl)

CONREM

Removes continuum from channel maps by fitting a polynomial to the continuum channels. (conrem.c)

CORMAP

Check whether there is a correlation between two maps (cormap.c)

ELLFIT

Programme fits an ellipse to an user defined bunch of points. (ellfit.c)

ELLINT

Integrate map in elliptical rings. Write statistics to log file, Ascii file or GDS table. See also: Supplementary documentation. (ellint.c)

ELLPROF

Create an output set with profiles extracted from an input set at positions in subsets that are either 1) defined by ellipses, 2) entered manually or 3) entered with the graphics cursor. (ellprof.c)

FLUX

Program to calculate flux in user defined box. (flux.c)

HISTOG

Program creates histogram of intensities in a set or part of a set. (histog.c)

INSPECTOR writes slices through a 3d GIPSY data cube. It overlays radial HI velocities (i.e. 'tilted ring' circular velocities) on velocities in XV diagrams and lets you adjust the tilted ring parameters to get a better fit. See also: INSPECTOR Supplementary documentation. (inspector.src)

OBJECTS

Find and analyze isolated (extended) structures in an image. (objects.c)

points

Automatic point source extractor. Uses a histogram method to determine the zerolevel and the noise in a map. (points.src)

PROFGLOB

Interactive estimation of width of global profile. (No fitting involed) (profglob.c)

QFIT

Interactive fit of 2-D gaussians (qfit.c)

QPLOT

QPLOT plots an one dimensional slice through a set. (qplot.c)

RADIAL

Derive radial surface density distribution from a 2-dim total HI map using the 'Lucy method'. (radial.c)

RADPROF

Solves the radial surface density distribution from a strip integral of the brightness distribution. USE PROGRAM RADIAL AS FRONT END FOR RADPROF. (radprof.shl)

RANDOM

Generate random numbers from various distributions. Add noise to sets. Write random numbers to an (ascii) file on disk. (random.c)

RECTIFY

Review the geometrical component of a model galaxy by fitting surface densities in (user supplied) tilted rings. (rectify.c)

SHUFFLE

The programme shuffles profiles in a set so that they are aligned on positions taken from another set. (shuffle.c)

TRACE

TRACE plots image values at user given positions as function of distance to a plot centre (in 2-d (sub)sets). (trace.c)

XGAUFIT

XGAUFIT estimates parameters for multi component one dimensional gauss functions using data in selected profiles. It can use these estimates to fit the parameters to the data in a least squares fit. Output is send to subsets in a set. (xgaufit.src)

XGAUPROF

Fit parameters of a standard Gauss function, the Gauss-Hermite series or a Voigt lineshape to data from GIPSY sets or ASCII files See also: XGAUPROF Supplementary documentation. (xgauprof.src)