make stack negative

[mxp]

Hi,

I'm new to cacti. I get positive data from a source. But i want that the data is multiplied by -1, so that the graph will be negativ(that means under the 0 line). I tried to use the CDEF "make stack negativ" but that doesn't work. It just turns the graph into the other direction from the lowest value.
Do you have any idea how to do so.

Thanks

Sebastian

[gandalf]

Please post a screenshot
Reinhard

[mxp]

thank you but I solved the problem(just had to set Use--alt-autoscale instead of Use--alt-autoscale-max).