Actual by Predicted plot.- expand x/y axis for confidence region

[#1]

Hi,

I'm trying to build a model using the "Fit Model" platform and expand the x and y range of the Actual by Predicted plot. However, once I do that, I get to a point where the confidence interval and the mean prediction line are no longer shown (see below).

Any thoughts on how to fix this?

Thanks!

[#2]

JMP discourages extrapolation of linear regression models. You can, though, achieve the result you want. Force the extrapolation by changing the Minimum value in the axis settings dialog. Double-click the axis and change the minimum value.

Before:

After:

[#3]

Hi Mark,

Thanks for the reply, I've tried doing this. But at some point the (maybe ~50% beyond the mean of the data), the prediction line and confidence regions can't be extrapolated and the plot is blank in that region. This looks like maybe a default in how these two lines are initially calculated. Is there a way to expand the region these are calculated over?

Thanks,

Matt

[#4]

The method I showed you is the only way I know how to extrapolate. You can pursue this issue with JMP Technical Support ([email protected]). Please report any help that they might provide here for others to benefit.