Up: GREG2 Language Internal Help
[GREG2\]LEVELS [Args ...]
LEVELS without arguments will display the contour levels used by command
RGMAP. The level values can also be found in the array GREG%LEV-
ELS[GREG%NLEVEL] (not defined if no levels), where GREG%NLEVEL is the
number of levels (0 if no levels).
reset the level list (and thus GREG%NLEVEL becomes 0).
[GREG2\]LEVELS C1 C2 TO C3 BY C4 ...
Sets the contour levels to be C1, C2, C2+C4, C2+2*C4, ..C3, and so on,
using the same list format as SIC\ command FOR. The contour levels are
used to make contour plots of the Regular Grid array using command
RGMAP. Up to 40 contours can be given at a time. Note that it is more
efficient to use a single RGMAP command with many levels than many RGMAP
commands with a single level each.
[GREG2\]LEVELS EXPO Step [Linear Scale]
Sets the contour levels in a semi-exponential scale. Linear is the num-
ber of linear levels: levels from -Linear*Step to -Step by Step and Step
to Linear*Step by Step are regularly spaced. Above Linear*Step, the next
contour level is Scale times larger than the previous one. The defaults
are Step=1, Linear=3 and Scale=sqrt(2).