Transforms a graphics position from one picture co-ordinate Frame to another
[The 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. "1996.8"
for example). Such values are interpreted as a
Besselian epoch if less than 1984.0 and as a Julian epoch otherwise. A domain name such as SKY, AXIS, PIXEL, NDC, BASEPIC, CURPIC.
An integer value giving the index of the required Frame within the WCS component.
An IRAS90 Sky Co-ordinate System (SCS) values such as "EQUAT(J2000)"
(see SUN/163).
If a null parameter value is supplied, then the current Frame in the current picture
is used. [!]
A domain name such as SKY, AXIS, PIXEL, GRAPHICS, CURPIC, NDC, BASEPIC.
An integer value giving the index of the required Frame within the WCS component.
An IRAS90 Sky Co-ordinate System (SCS) values such as "EQUAT(J2000)"
(see SUN/163).
If a null parameter value is supplied, then the BASEPIC Frame is used. ["BASEPIC"]
":"
will display
details of the required co-ordinate Frame). The position should be supplied as a list
of formatted axis values separated by spaces or commas. TRUE
when the supplied point lies within the bounds of
the current picture. BASEPIC co-ordinates locate a position within the entire graphics device. The bottom-left corner of the device screen has BASEPIC co-ordinates of (0, 0). The shorter dimension of the screen has length 1.0, and the other axis has a length greater than 1.0.
NDC co-ordinates are like BASEPIC co-ordinates except that the top-right corner of the screen has NDC co-ordinates of (1, 1). That is, both axes of the screen have unit length.
GRAPHICS co-ordinates also span the entire graphics device but are measured in millimetres from the bottom-left corner.
CURPIC co-ordinates locate a point within the current picture. The bottom-left corner of the current picture has CURPIC co-ordinates of (0, 0). The shorter dimension of the current picture has length 1.0, and the other axis has a length greater than 1.0.
The transformed position is not written to the screen when the message filter
environment variable MSG_FILTER is set to QUIET
. The creation of the output Parameter
POSOUT is unaffected by MSG_FILTER.