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IDCLEAR - Clears an image display and purges its database entries

Description:
This application software resets an image-display device. In effect the device is cleared. It purges the graphics-database entries for the device. Optionally, only the current picture is cleared and the database unchanged. (Note that the clearing of the current picture may not work on some image-display devices.)
Usage:
idclear [device] [current]

Parameters:
CURRENT = _LOGICAL (Read)
If true then only the current picture is cleared. [FALSE]
DEVICE = DEVICE (Read)
The graphics device to be cleared. [Current image-display device]
Examples:
idclear
Clears the current image display and purges its graphics database entries.

idclear current
Clears the current picture on the current image display.

idclear xwindows
Clears the xwindows device and purges its graphics-database entries.

Related Applications
KAPPA: GDCLEAR, IDSTATE, OVCLEAR.


next up previous 558
Next: IDINVISIBLE - Makes memory planes of an image-display device invisible
Up: Specifications of KAPRH applications
Previous: GREYPLOT - Produces a greyscale plot of a 1-d or 2-d NDF

KAPRH --- A home for retired KAPPA applications
Starlink User Note 239
David S. Berry
20 November 2001
E-mail:starlink@jiscmail.ac.uk

Copyright © 2013 Science and Technology Facilities Council