This application selects the first, i.e. oldest, empty FRAME picture in the graphics database  for a graphics device. Empty means that there is no additional picture lying completely with its bounds. This implies that the FRAME is clear for plotting. This task is probably most useful for plotting data in a grid of FRAME pictures.

DEVICE = DEVICE (Read)

picempty

This selects the first empty FRAME picture for the current graphics device.

picempty xwindows

This selects the first empty FRAME picture for the xwindows graphics device.

• An error is returned if there is no empty FRAME picture, and the current picture remains unchanged.

KAPPA: PICENTIRE, PICGRID, PICLAST, PICLIST, PICSEL, PICVIS.

The execution time is approximately proportional to the number of pictures in the database before the first empty FRAME picture is identified.