[rrd-users] Re: PHP4-RRDTool continues..

[Dan Cech]

Westlake, Simon wrote:
> Does anyone know of some undocumented way (or some way I'm not
> understanding from the rrdgraph manpage) to manipulate the data pulled
> from the rrd file and perform a mathematical equation on it?

You can create a CDEF based on your DS like:

DEF:rawin=myrrdfile.rrd:in:LAST
CDEF:bitsin=rawin,8,*

The graph bitsin, rather than rawin

Dan

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