The Yorkshireman

Forget it.

A reply today would be appreciated.

Here's the data: 2 series Benchmark Fund Time -5.80 -5.50 Period1

I have a generic chart which caters for Positive and Negative values. If all or at least one point has a positive value, the chart works. However, if all the values become Negative, e.g -5.50 , -5.80 the Min value becomes -5.50 and the Max value is -5.80, as if the negative sign is being ignored. The chart is now upside down. How can a single generic chart work in borth situations?