[rrd-users] how to fill with previous value when graph

[Dexin Wang]

I have some NaN value on some PDP. When creating the graph, I know I can 
do this:

CDEF:value=value,UN,0,value,IF

to set the value to 0 if it is NaN. Is it possible that whenever I find 
a NaN, I use the value of the previous non-NaN PDP? Basically can I 
store value in a variable and use it? Or some other way? Please help.

Thanks,

Dexin


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