[rrd-users] php rrdgraph

Martin Hoppe martin.hoppe at nordwind-ev.de
Tue May 30 19:41:01 MEST 2006

I want to calculate the windspeed from m/s in beaufort before I draw the
The equation is: windspeed [bft] = (windspeed [m/s] ^ 0.694)*1.102
This is the php-code: $windspeed_bft = pow($windspeed_ms,0.694)*1.102;
But how can I write this with php-rrdgraph?
    CDEF: ???
Best regards

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