I am developing some long sequences in r.mapcalc.
I am preparing separate files with r.mapcalc language instructions
and wondered if there is an undocumented method
to place a comment into an r.mapcalc input file, for example,
do_it_to_it.mapcalc
On the command line I would invoke
r.mapcalc < do_it_to_it.mapcalc
The "#" and the "!" and commands are used for other purposes
in r.mapcalc. I would like something like the
! in r.infer and the
# in r.combine
r.mapcalc responds "you have confused me" if I try different
combinations (sorry for my brutal attempts).
Does anyone have any clever ideas?
Perhaps a comment provision could be added to plans for future releases.
Thanks
Steffen Meyer
IDS Group, Colorado State University
---------- Begin of For_Reference ----------
The r.infer language uses the "!" symbol as a start of comment,
and blank lines can be used to group blocks of operations together.
For example:
IFMAP elevation.255 170-255
ANDIFMAP density 3 4
THEN high elevation with trees
!
...
Similarly, the "#" seems to work fine in the r.combine language
as a comment field and blank lines can be used to group blocks
of operations together.
For example foo.comb contains:
# hello and documentation
# get the sandstone stuff
(NAME sandstone
(GROUP (geology))
)
--- Begin of screen output ---
GRASS 4.1 > r.combine < foo.comb
Analyses will be displayed in color during execution
Help is available for r.combine: enter (help)
[1]: # hello and documentation
# get the sandstone stuff
MAP EXPRESSION
...
--- end of screen output ---
---------- End of For_Reference ----------