Keyword Posn Type Description
------- ---- ---- -----------
ARDFILE 1 CHARACTER Name of the output text file
NEW LOGICAL Open a new file (Y) or append to an
old one (N) ?
EXCLUDE LOGICAL Is this an EXCLUDE (Y) or INCLUDE (N) region ?
SHAPE CHARACTER Shape of the area e.g. circle, ellipse...
XCENT REAL Centre of the shape in the X axis
YCENT REAL Centre of the shape in the Y axis
XWIDTH REAL Width of the box (axis units)
YWIDTH REAL Height of the box (axis units)
RADIUS REAL Radius of the circle (axis units)
SMINOR_AXIS REAL Semi minor axis (axis units)
SMAJOR_AXIS REAL Semi minor axis (axis units)
ORIENT REAL Orientation of the ellipse (degrees).
Anti-clockwise from the X axis
NPTS INTEGER Number of points in the polygon
X1 REAL X axis value of the first polygon point
Y1 REAL Y axis value of the first polygon point
.
.
X10 REAL X axis value of the tenth polygon point
Y10 REAL Y axis value of the tenth polygon point
NCOL INTEGER Number of columns if shape is column
NROW INTEGER Number of rows if shape is row
XEND1 REAL X value of one end of the line
YEND1 REAL Y value of one end of the line
XEND2 REAL X value of one end of the line
YEND2 REAL Y value of one end of the line
NPIX INTEGER Number of pixels
INNRAD REAL Inner radius of an annulus (axis units)
OUTRAD REAL Outer radius of an annulus (axis units)
MORE LOGICAL Choose another shape ?