MANIPULATION tasks

AXSWAP

Swap first and second axis of 2-dim (sub) set and/or change the sign of the grid separation. (axswap.c)

BLOT

Conditional transfer of maps using blotch region. (blot.c)

CBLANK

Converts datavalues to BLANK and vice versa. CBLANK also checks whether the data are legal (i.e. it checks for NaN's etc. and replaces them by BLANKS). (cblank.shl)

CLEAN

This program cleans maps or lines. (clean.c)

CLIP

Blank values of input if they are outside range. (clip.c)

COMBIN

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

CONDIT

Transfer values if test value within certain range. (condit.c)

COPY

Program to copy set and subsets. It can also increase or decrease the frame size of the subsets. BLANKs will be written in the output set outside the original subset frame. (copy.shl)

DECIM

Decrease size of a set in any direction with an integer factor (decim.c)

DIMINISH

Program to copy set and subset. It will only copy the subset axes to the output set, so you can diminish the dimensionality of a set. (copy.shl)

EDITSET

Program to edit data in a set. (editset.c)

ENHANCE

Enhance image (Local enhancement method) (enhance.c)

EXTEND

Copy set and extend new set with one or more axes. Change size of set. (extend.c)

FFT

This program does a two-dimensional Fast Fourier Transform on a (pair of) map(s). Maximum map size is 2048 x 2048. (fft.c)

FFTN

Apply fast Fourier transform in N dimensions, i.e. for a profile (N=1), a map or a series of maps (N=2) or a data cube (N=3). (fftn.src)

FITSREPROJ

This task if a versatile tool to re-project data in a FITS file to another- or a modified world coordinate system. The output can be converted to a GIPSY set or a legacy GIPSY set (to be used for tasks like ROTCUR, ROTMOD etc.). (fitsreproj.src)

INSERT

Program to insert (multiple) (parts of) a set into another existing set. (insert.shl)

MIRROR

Mirrors a two-dimensional image in x, y or both. It can also rotate the image over +90 or -90 degrees. (mirror.c)

MNMX

This program finds the minimum and maximum value in a subset or part of a subset. It also counts the number of blanks. (mnmx.shl)

MOMENTS

Program to calculate moments and other properties of a profile (moments.c)

PATCH

Find data values at positions of blanks interpolating the data in a small volume around the blanks. (PATCH)

PBCORR

Corrects maps for primary beam correction (pbcorr.shl)

REGRID

Create an output map with different grid along one axis. (regrid.c)

REPROJ

Re-project a spatial map into another map with a different coordinate system. See also: Projections used in GIPSY. . (reproj.c)

SCALE

Program to scale the data in subsets by a factor and an offset. (scale.shl)

SHUFFLE

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

SIGDET (SIGnal DETection)

Separate signal from noise in image. (sigdet.c)

SLICE

Make a slice through a set (slice.c)

SMOOTH

Smooth sets with a gaussian beam (smooth.shl)

SNAPPER

Replace values by a box with other values e.g. for removing a bad perimeter of a velocity field. (snapper.c)

SPLINEFIT

Fit spline to data in selected subses and interpolate data for other subsets (splinefit.c)

TRANSFORM

Transform a (sub)set using rotation, scaling, translation etc. (transform.c)

TRANSPOSE

Copy a input set to an output set of which the axis order may be different. This task may be an alternative for AXSWAP. (transpose.src)

VELSMO

Program does a one dimensional smoothing of subsets. (velsmo.shl)