autoplot fails on poly regression

[DasHammett]

Hi,

I get similar error message as in #137 when doing any polynomial regression.
Please see reproducible example:

library(ggfortify)
model <- lm(mpg ~ poly(hp, 2, raw = TRUE),data = mtcars)
autoplot(model)
Error: Each variable must be a 1d atomic vector or list.
Problem variables: 'poly(hp, 2, raw = TRUE)'

par(mfrow = c(2,2))
plot(model)

[terrytangyuan]

I am travelling and not able to help with this for a while. Are you using the most recent version on Github? cc: @sinhrks

[DasHammett]

Hi!

No worries, you will have a look upon your return.
In the meantime I can still run the regression with formula = y ~ x + I(x²) as writing the regression like this works as expected.

The first thing I did is to use the github version, but unfortunately I experienced the same error.

Thank you for having a look when you can.

[sinhrks]

@DasHammett thx for the report. the issue is caused by matrix contained in the explanatory values ( almost the same as #137). pls use the latest master.