A list of the colours in the current palette is also produced.
TRUE, a detailed description is displayed of the co-ordinate Frame in which the picture bounds are reported (see Parameter FRAME).
[Current graphics device
"1996.8"for example). Such values are interpreted as a Besselian epoch if less than 1984.0 and as a Julian epoch otherwise.
A ?? such as SKY, AXIS, PIXEL, NDC, BASEPIC, CURPIC. The special domain AGI_WORLD is used to refer to the world co-ordinate system stored in the AGI graphics database. This can be useful if no WCS information was store with the picture when it was created.
An integer value giving the index of the required Frame.
An IRAS90 Sky Co-ordinate System (SCS) values such as
"EQUAT(J2000)" (see SUN/163).
If a null value (
!) is supplied, bounds are reported in the co-ordinate Frame which was
current when the picture was created.
TRUE, then an outline will be drawn around the current picture to indicate its position.
FALSE, the state of the graphics device is not reported, merely the results are written to the output parameters. It is intended for use within procedures.
A comma-separated list of strings should be given in which each string is either an
attribute setting, or the name of a text file preceded by an up-arrow character
Such text files should contain further comma-separated lists which will be read and
interpreted in the same manner. Attribute settings are applied in the order in which
they occur within the list, with later settings overriding any earlier settings given
for the same attribute.
Each individual attribute setting should be of the form:
is the name of a plotting attribute, and
is the value to assign to the attribute. Default values will be used for any
unspecified attributes. All attributes will be defaulted if a null value (
initial default–-is supplied. To apply changes of style to only the current invocation,
begin these attributes with a plus sign. A mixture of persistent and temporary style
changes is achieved by listing all the persistent attributes followed by a plus sign
then the list of temporary attributes.
See Section E for a description of the available attributes. Any unrecognised attributes are ignored (no error is reported).
The appearance of the outline is controlled by the attributes Colour(Border),
Width(Border), etc. (the synonym Outline may be used in place of Border). In addition, the
following attributes may be set in order to control the appearance of the formatted
axis values reported on the screen: Format, Digits, Symbol, Unit. These may be suffixed
with an axis number (e.g. Digits(2)) to refer to the values displayed for a specific
The displayed bounds are the extreme axis values found anywhere within the current picture. In some situations these extreme values may not occur on the edges of the picture. For instance, if the current picture represents a region including the north celestial pole, then displaying the picture bounds in celestial co-ordinates will give a declination upper limit of 90 degrees, whilst the RA limits will be 0 hours and (close to) 24 hours.
Previous versions of this application reported bounds in ‘Normalised Device
Co-ordinates’ (see Section 11.3). Similar functionality is now provided by setting
Parameter FRAME to
"BASEPIC". Be aware though, that Normalised Device Co-ordinates were
normalised so that the longer of the two axes had a length of 1.0, but BASEPIC
co-ordinates are normalised so that the shorter of the two axes has length
The ‘NDC’ Frame is now a normalized co-ordinate system in which each axis of the graphics device has unit length.