[rrd-users] Problem with CDEF and PREV-Function

[Christoph Galuschka]

Hello,

I'm trying to use the PREV-Function. Although I tried a lot, I 
failed so far. Here is my problem:

When using the following CDEF:
CDEF:line_new=PREV(idefix2_content)
(idefix2_content is already defined)
I get the error:
syntax error near unexpected token `CDEF:line_new=PREV(i'

When using this CDEF:
CDEF:line_new=idefix2_content,PREV
I get the error:
ERROR: RPN final stack size != 1

Does anybody have an idea what I did wrong or does anybody 
have an example?

regards
Christoph

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