Hi,
> What is the advantage over STACKing an area on top of an invisible
> part?
Well, I did not know how to use the invisible part...it seems nice for
my purpose also. I think one of the advantage of RANGE function is that
it could shorten the command line.
Here's an example. To make a graph like
http://rodem.ingrid.org:8080/shimizu/a.png
requires following commands.
rrdtool graph a.png \
DEF:val1=waseda.rrd:util:MAX \
DEF:val2=waseda.rrd:util:MIN \
DEF:val3=waseda.rrd:util:AVERAGE \
CDEF:val4=val1,val2,- \
CDEF:val5=val3,val2,- \
AREA:val2 STACK:val4#00EE00 \
AREA:val2 STACK:val5#E000E0
where the same graph could be generated using RANGE function
like this.
rrdtool graph b.png \
DEF:val1=waseda.rrd:util:MAX \
DEF:val2=waseda.rrd:util:MIN \
DEF:val3=waseda.rrd:util:AVERAGE \
RANGE:val2,val1#00EE00 \
RANGE:val2,val3#E000E0
Isn't it much straightforward?
Thanks,
Susumu
--
Shimizu, Susumu # +-----+
Waseda Univ, Tokyo [EMAIL PROTECTED],*|
[EMAIL PROTECTED] +-----+
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