CATCHART - Plot a one or more target lists as a finding chart

Description:

Plot a one or more target lists as a finding chart. The lists are plotted using a tangent plane projection. If several lists are plotted they are superimposed on a single finding chart. In this case the coordinates for all the lists must be for the same equinox and epoch.

Usage:

catchart

Parameters:

GRPHDV = CHARACTER (read)

The name of the graphics device on which the plot will be produced.

MCENTRE = LOGICAL (read)

A flag indicating whether the centre of the plot will be marked with a 'gun sight' cross. It is coded as follows: .TRUE. - mark with a cross, .FALSE. - do not mark with a cross.

MULTIPLE = LOGICAL (read)

A flag indicating whether more than target list is to be plotted. It is coded as follows: .TRUE. - plot several target lists, .FALSE. - plot a single target list.

GRPLST = CHARACTER (read)

The name of the target list to be plotted.

TITLE = CHARACTER (read)

Title for the plot.

QUIET = LOGICAL (read)

Operate in quiet mode where warnings are suppressed. The permitted values are: TRUE - quiet mode, FALSE - verbose mode.

Examples:

catchart

A graphics device and target list will be prompted for and then the target list will be plotted. Most of the other parameters will only be prompted for if they cannot be read from the target list. The centre of the plot will be marked with a 'gun sight' cross.

catchart multiple=yes

Plot several target lists superimposed as a single finding chart. You will be prompted in sequence for the required target lists. When you have entered all the required lists reply QUIT.

catchart mcentre=no

A graphics device and target list will be prompted for and then the target list will be plotted without a central cross.

catchart multiple=yes mcentre=no

Plot several target lists superimposed on a single finding chart with no central cross.