[rrd-users] How would you handle this?

[Karl Fischer]

Am 27.04.2010 19:39, schrieb Jeffrey Zhang:
> Hi Can anybody give me clue on -
>
> how can I draw a vertical line for time in X-axis which depands on
> the Y-axis value, e.g, at the time of Y=100?
> probably I should use VDEF but I don't know how to derive the time?
> 
> A simple example would be great.

Hi Jeffrey,

try this:

CDEF:yMark=value,100,EQ,1,UNKN,IF
TICK:yMark#000000:1

hth

- Karl