[rrd-users] Using PREV to fix data

Ellis Corey Corey.Ellis at comverse.com
Sat May 3 01:56:09 MEST 2003

Hi everyone,

I have a quick question.

When fixing unknown data, instead of setting UN data to 0, I want to set it
to the PREV(val).  My question is what happens if the PREV(val) is UN also

I am using the following RPN setup


So I want to know what will happen if pre_val is UNKNOWN also and the
real_val is UNKNOWN.  Will the new_val get an UNKNOWN, and if so will it be
used in the graphing calculations?

Thanks in advance.

Corey M. Ellis
Senior Network Engineer, Comverse ICD
11 Broadway Ste 365, New York, NY 10004
Office: 212.652.6790
Mobile: 856.278.0550
Fax: 212.652.6790
Email: corey.ellis at comverse.com

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