I'm attempting to calculate the derivative of two adjacent points in the
dataset during the graphing stage (yes, im aware the dataset can be
created w/ the information already via DERIVE). Here is what I've tried:
recvb -> cumulative amount of data transferred (bytes)
30 -> interval, though if it is possible to grab the previous time value
and do an actual time delta calculation w/ the current datapoint's time,
that would be best
CDEF:recvd=recvb,PREV(recvb),-,30,/
AREA:recvd#FF0000:"RX MBps\n"
Problem w/ that above is I get an error from BASH:
line 13: syntax error near unexpected token `('
line 13: ` CDEF:recvd=recvb,PREV(recvb),-,30,/ \'
So, how is one supposed to ever use the PREV() function if BASH is gg to
complain of it?
- Eric
--
Unsubscribe mailto:[EMAIL PROTECTED]
Help mailto:[EMAIL PROTECTED]
Archive http://lists.ee.ethz.ch/rrd-users
WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
