[rrd-users] Help with RPN: divide the sum of two sets

[Graham Leggett]

On 15 Dec 2010, at 6:50 AM, Steve Shipway wrote:

> if you have a more recent version of RRDTool, you can use ADDNAN,  
> which is neater:
>
> CDEF:cost=bysize400,bysize200,ADDNAN,bycount400,bycount200,ADDNAN,/

There were indeed unknowns in some of the graphs, and replacing "+"  
with ADDNAN did the trick, thank you!

Regards,
Graham
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