geom_textsmooth computation fails if method argument is not specified

[tjebo]

I came across this issue after I'd added a solution to this popular problem with your awesome package and a user asked me to demonstrate how one can do this with geom_smooth.

This seems very related to https://stackoverflow.com/questions/42493048/computation-failed-for-stat-summary-what-must-be-a-character-string-or-a-func and tidyverse/ggplot2#1937.
However, as you can see below, I am using reprex, and do have a completely empty session. I strongly assume there must be some objects defined that have names such as "mean" or "lm" that are not disambiguated any longer.

library(geomtextpath)
#> Loading required package: ggplot2

ggplot(iris, aes(Sepal.Length, Sepal.Width, label = "a")) +
  geom_textsmooth()
#> `geom_smooth()` using formula 'y ~ x'
#> Warning: Computation failed in `stat_smooth()`:
#> 'what' must be a function or character string

## works when specifying method argument
ggplot(iris, aes(Sepal.Length, Sepal.Width, label = "a")) +
  geom_textsmooth(method = "loess")
#> `geom_smooth()` using formula 'y ~ x'

^{Created on 2022-05-30 by the reprex package (v2.0.1)}

Session info

sessioninfo::session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────
#>  setting  value
#>  version  R version 4.1.2 (2021-11-01)
#>  os       macOS Big Sur 10.16
#>  system   x86_64, darwin17.0
#>  ui       X11
#>  language (EN)
#>  collate  en_GB.UTF-8
#>  ctype    en_GB.UTF-8
#>  tz       Europe/London
#>  date     2022-05-30
#>  pandoc   2.14.0.3 @ /Applications/RStudio.app/Contents/MacOS/pandoc/ (via rmarkdown)
#> 
#> ─ Packages ───────────────────────────────────────────────────────────────────
#>  package      * version date (UTC) lib source

#>  geomtextpath * 0.1.0   2022-01-24 [1] CRAN (R 4.1.2)
#>  ggplot2      * 3.3.6   2022-05-03 [1] CRAN (R 4.1.2)

#> 
#>  [1] /Library/Frameworks/R.framework/Versions/4.1/Resources/library
#> 
#> ──────────────────────────────────────────────────────────────────────────────

[teunbrand]

Hi Tjebo,

Does this issue still occur with the dev version? We've seen a similar thing in #70 and fixed that issue.

Best

[tjebo]

I will need to download the dev version first :) Will let you know in a couple of minutes.

[tjebo]

Indeed, the issue is solved with the current dev version.

library(geomtextpath)
#> Loading required package: ggplot2

ggplot(iris, aes(Sepal.Length, Sepal.Width, label = "a")) +
  geom_textsmooth()
#> `geom_smooth()` using method = 'loess' and formula 'y ~ x'

^{Created on 2022-05-30 by the reprex package (v2.0.1)}

sessioninfo::session_info()
#> ─ Session info 

#>  package      * version    date (UTC) lib source

#>  geomtextpath * 0.1.0.9000 2022-05-30 [1] Github (AllanCameron/geomtextpath@f11e256)
#>  ggplot2      * 3.3.6      2022-05-03 [1] CRAN (R 4.1.2)
──────────────────────────────────────────────────────────────────────────────