[rrd-users] rpn expression question

[Alex Ustyancev]

Hi all.

I need to create a complex rpn expression. In two words, it calculates a value, everything is easy. But one small problem. In expression formula I need to devide one value by another. And the devider sometimes could be zero. As far as i know, rrd rpn sets the result of devision by zero as INFINITY. But in that case i need to set result as 0. So i try such RPN expression: {my_result_value_which_could_be_infinity},DUP,ISINF,EXC,0,EXC,IF

But that doen't work. There is no graph at all shown. Afaik it means, that there is a mistake in rpn expression. What's wrong with that expression?

Alex.

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