AIPS HELP file for DFILEBOX in 31DEC19
As of Tue Dec 18 12:29:11 2018
DFILEBOX: Verb to reset boxes with TV cursor & write to file
GRCHAN 0.0 7.0 Graphics channel to use
GR2CHAN 0.0 7.0 2nd Graphics channel to use
NFIELD 0.0 512.0 Field number to attach to box
0 => get from image class
BOXFILE Text file to receive boxes
Uses TV cursor to select the image with which the
BOXes are associated (if needed). Other input is from
TV cursor. See HELP DFILEBOX or the terminal (during
execution) for instructions.
Use: To delete boxes from an existing boxfile. The BOXFILE is read
into memory for the selected field and the boxes are displayed
on the TV. Any box that appears at least partially in the TV
picture may be deleted.
The terminal will issue instructions. If there is more than one
image on the TV, the routine asks the user to point out the image
with which to convert the input boxes to TV pixels for the
initial display of them. The routine begins in a "search" mode.
In this mode, move the cursor to any lower left or upper right
corner of any rectangular box or the center or any point on the
circumference of any circular box. Then press button A or B to
select that box. The selected box will change color. If that
is the box you wish to delete, hit button A; if not, hit
buttons B or C. The verb then returns to search mode unless
there are no more boxes. Button D always exits immediately
with no more deletions.
Input only adverbs:
GRCHAN......Graphics channel to use for the main display of boxes.
0 -> 3.
GR2CHAN.....Graphics channel to use for boxes that are about to be
deleted. 0 -> GRCHAN+4.
NFIELD......Field number for boxes; < 1 or > 4096 => get from image
class if possible, otherwise take 1.
BOXFILE.....Text file to which the boxes are written. It must
already exist and have boxes for the specified field.
Note that BOXFILE may also be used to specify field parameters to IMAGR.