New applications

CHAIN

-- Concatenates a series of NDFs, in the order supplied and treated as vectors, to form a one-dimensional output NDF. The dimensions of the NDFs may be different, and indeed so may their dimensionalities.

COPYBAD

-- Copies the bad pixels from one NDF into another.

LISTMAKE

-- Creates a catalogue holding a positions list. These are used to communicate positions between applications, together with associated WCS information. In addition to numerical axis values, they also contain an integer identifier for each position, and a description of the available co-ordinate Frames. The positions are supplied by the user in a file or in response to parameter prompts. Alternatively, the pixel centres in a specified NDF may be used.

LISTSHOW

-- Shows a sub-set of the positions contained within a positions list catalogue, in any of the co-ordinate Frame  s described within the catalogue. It can also write the selected positions to a new positions list. The positions are displayed on the screen, and can also be marked on the current graphics device in a variety of ways.

PROFILE

-- Produces a one-dimensional NDF containing a profile through an n-dimensional NDF, retaining the current co-ordinate Frame of the n-dimensional NDF. The data values in the output NDF are samples taken along a specified one-dimensional curve through the input NDF.

RESHAPE

-- This application reshapes an NDF to create another NDF by copying array values. The array components in the input NDF are treated as vectors. Each output array is filled in order with values from the input vector, until it is full or the input vector is exhausted.

WCSADD

-- Allows a new co-ordinate Frame to be added into the WCS component of an NDF. The new Frame must be linearly related to an existing Frame.

WCSALIGN

-- Resamples a group of two-dimensional NDFs in order to align them with a specified reference NDF. The WCS information within the NDFs is used to determine the transformations required to achieve alignment.

WCSATTRIB

-- Allows attributes within the WCS component of an NDF to be examined or changed.

WCSCOPY

-- Copies the WCS component from one NDF to another. One use of this is to allow WCS information to be re-instated in an NDF after being stripped out by an application which does not propagate WCS information.

WCSFRAME

-- Allows the current co-ordinate Frame within an NDF to be examined and changed.

WCSREMOVE

-- Removes one or more co-ordinate Frames from the WCS component of an NDF.

WCSTRAN

-- Transforms a position from one NDF WCS co-ordinate Frame to another.