daattali/ggExtra

ggMarginal can’t handle Date axes

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#45 opened on Mar 24, 2017

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enhancementhelp wanted

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Description

library(ggExtra)
data(airquality)
airquality$Date <- with(airquality, as.Date(sprintf('1973-%02d-%02d', Month, Day)))

p <- ggplot(airquality, aes(Date, Temp)) + geom_point()
print(ggMarginal(data = airquality, x = 'Date', y = 'Temp'))  # works
print(ggMarginal(p, airquality, 'Date'))                      # doesn’t

the second one throws:

Error: Invalid input: date_trans works with objects of class Date only
Traceback:

1. print(ggMarginal(p, airquality, "Date"))
2. ggMarginal(p, airquality, "Date")
3. ggplot2::ggplot_build(top)
4. lapply(data, scales_transform_df, scales = scales)
5. FUN(X[[i]], ...)
6. unlist(lapply(scales$scales, function(s) s$transform_df(df = df)), 
 .     recursive = FALSE)
7. lapply(scales$scales, function(s) s$transform_df(df = df))
8. FUN(X[[i]], ...)
9. s$transform_df(df = df)
10. f(..., self = self)
11. lapply(df[aesthetics], self$transform)
12. FUN(X[[i]], ...)
13. f(..., self = self)
14. self$trans$transform(x)
15. stop("Invalid input: date_trans works with objects of class Date only", 
  .     call. = FALSE)

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