When the y axes is changed to use a log scale, we take the log of the y
data that was passed to us before we map it to the graph since we need
to display the data on a log scale. The log of a negative number is a
NaN.
Without the ProcessSpecialValues property, we do not check the array
returned after the log operation for invalid (or undrawable) points.
I hope this helps
Bilal Durrani
NI
