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LIMITS - Set the world coordinate limits

Description:
The world coordinate limits are set from the parameters given on the command line.

This command is a synonym for WORLD GIVEN.


Usage:
limits [xmin] [xmax] [ymin] [ymax]

Parameters:

XMIN = _REAL (Read and Write)
The world coordinate of the left-hand edge of the plot.

[The value of the global parameter PONGO_XMIN is used.]

XMAX = _REAL (Read and Write)
The world coordinate of the right-hand edge of the plot.

[The value of the global parameter PONGO_XMAX is used.]

YMIN = _REAL (Read and Write)
The world coordinate of the lower edge of the plot.

[The value of the global parameter PONGO_YMIN is used.]

YMAX = _REAL (Read and Write)
The world coordinate of the upper edge of the plot.

[The value of the global parameter PONGO_YMAX is used.]

PROJECTION = _CHAR (Read and Write)
The geometry to be used for plotting the data. This is explained in more detail in the section on projections. Allowed values: "NONE", "TAN", "SIN", "ARC", "GLS", "AITOFF", "MERCATOR" and "STG".

[The value of the global parameter PONGO_PROJECTN is used. If PONGO_PROJECTN is not defined, the default value "NONE" is used.]

RACENTRE = _CHAR (Read and Write)
The centre of the projection in RA (i.e. the angle must be specified as hh:mm:ss.sss). This parameter is only required for PROJECTION values other than "NONE".

[The value of the global parameter PONGO_RACENTRE is used. If PONGO_RACENTRE is not defined, the default value "0" is used.]

DECCENTRE = _CHAR (Read and Write)
The centre of the projection in declination (i.e. the angle must be specified as dd:mm:ss.sss). This parameter is only required for PROJECTION values other than "NONE".

[The value of the global parameter PONGO_DECCENTRE is used. If PONGO_DECCENTRE is not defined, the default value "0" is used.]




next up previous 241
Next: LTYPE - Set the line style
Up: PONGO Command Definitions
Previous: LABEL - Draw the axis labels and title on the plot

PONGO [2exof Applications for Interactive Data Plotting [2exon 2.0-2
Starlink User Note 137
Paul Harrison, Paul Rees,
Peter Draper, Alasdair Allan
27 March 2008
E-mail:ussc@star.rl.ac.uk

Copyright © 2010 Science and Technology Facilities Council