Saving contour levels and coordinates
The contour levels are automatically stored in a vector named
CCONT
. If the
\COORDINATES
qualifier is used, the
x and y coordinates of each contour level are stored in
matrices named XCNT
and
YCNT
. The number of points stored
for each level is the first element of each column. For example,
XCNT[1,nc] (=n1)
is the number of
points making up contour number nc
, while
XCNT[2:n1+1,nc]
and
YCNT[2:n1+1,nc]
would contain the
x and y coordinates of the nc
th contour
level. These vectors are then available to the user for plotting and/or
manipulation. Each time the CONTOUR
command is entered, these vectors are emptied and replaced, so if you wish
to keep them, they should be renamed or copied into other vectors.