[R] ggplot error of "`data` must be a data frame, or other object coercible by `fortify()`, not an S3 object with class rxlsx"

[Kai Yang]

Hello List,
I got an error message when I submit the code below
ggplot(eth, aes(ymax=ymax, ymin=ymin, xmax=4, xmin=3, fill=ethnicity)) +  geom_rect() +  coord_polar(theta="y")  +  xlim(c(2, 4)   ) 

Error: `data` must be a data frame, or other object coercible by `fortify()`, not an S3 object with class rxlsx


I checked the syntax. But I can  not find any error on my code. Can you help me to find where is the problem?

Thanks

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