I teach a free 8 weeks data science course to high school students. One of their assignments is to use the reprex package to post a question to this forum. They must post the question in this thread. Please do not answer these questions!
Testing that students can post.
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-05 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-09 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-09 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in geom_col():
#> ! Problem while computing aesthetics.
#> 
Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-09 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-10 with reprex v2.1.0
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in ggplot(data = mtcars, mapping = aes(x = cyl, y = mpga)): could not find function "ggplot"
Created on 2024-06-10 with reprex v2.1.0
library(tidyverse)
library(ggplot2)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-10 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-11 with reprex v2.1.0
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in ggplot(data = mtcars, mapping = aes(x = cyl, y = mpga)): could not find function "ggplot"
Created on 2024-06-11 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-11 with reprex v2.1.0
library(tidyverse)
#> Warning: package 'tidyverse' was built under R version 4.3.3
#> Warning: package 'ggplot2' was built under R version 4.3.3
#> Warning: package 'tidyr' was built under R version 4.3.3
#> Warning: package 'readr' was built under R version 4.3.3
#> Warning: package 'purrr' was built under R version 4.3.3
#> Warning: package 'dplyr' was built under R version 4.3.3
#> Warning: package 'stringr' was built under R version 4.3.3
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
#> Backtrace:
#> ▆
#> 1. ├─base::tryCatch(...)
#> 2. │ └─base (local) tryCatchList(expr, classes, parentenv, handlers)
#> 3. │ ├─base (local) tryCatchOne(...)
#> 4. │ │ └─base (local) doTryCatch(return(expr), name, parentenv, handler)
#> 5. │ └─base (local) tryCatchList(expr, names[-nh], parentenv, handlers[-nh])
#> 6. │ └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
#> 7. │ └─base (local) doTryCatch(return(expr), name, parentenv, handler)
#> 8. ├─base::withCallingHandlers(...)
#> 9. ├─base::saveRDS(...)
#> 10. ├─base::do.call(...)
#> 11. ├─base (local) `<fn>`(...)
#> 12. ├─global `<fn>`(input = base::quote("large-unau_reprex.R"))
#> 13. │ └─rmarkdown::render(input, quiet = TRUE, envir = globalenv(), encoding = "UTF-8")
#> 14. │ └─knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet)
#> 15. │ └─knitr:::process_file(text, output)
#> 16. │ ├─xfun:::handle_error(...)
#> 17. │ ├─base::withCallingHandlers(...)
#> 18. │ └─knitr:::process_group(group)
#> 19. │ └─knitr:::call_block(x)
#> 20. │ └─knitr:::block_exec(params)
#> 21. │ └─knitr:::eng_r(options)
#> 22. │ ├─knitr:::in_input_dir(...)
#> 23. │ │ └─knitr:::in_dir(input_dir(), expr)
#> 24. │ └─knitr (local) evaluate(...)
#> 25. │ └─evaluate::evaluate(...)
#> 26. │ └─evaluate:::evaluate_call(...)
#> 27. │ ├─evaluate (local) handle(...)
#> 28. │ │ └─base::try(f, silent = TRUE)
#> 29. │ │ └─base::tryCatch(...)
#> 30. │ │ └─base (local) tryCatchList(expr, classes, parentenv, handlers)
#> 31. │ │ └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
#> 32. │ │ └─base (local) doTryCatch(return(expr), name, parentenv, handler)
#> 33. │ ├─base::withCallingHandlers(...)
#> 34. │ ├─base::withVisible(value_fun(ev$value, ev$visible))
#> 35. │ └─knitr (local) value_fun(ev$value, ev$visible)
#> 36. │ └─knitr (local) fun(x, options = options)
#> 37. │ ├─base::withVisible(knit_print(x, ...))
#> 38. │ ├─knitr::knit_print(x, ...)
#> 39. │ └─knitr:::knit_print.default(x, ...)
#> 40. │ └─evaluate (local) normal_print(x)
#> 41. │ ├─base::print(x)
#> 42. │ └─ggplot2:::print.ggplot(x)
#> 43. │ ├─ggplot2::ggplot_build(x)
#> 44. │ └─ggplot2:::ggplot_build.ggplot(x)
#> 45. │ └─ggplot2:::by_layer(...)
#> 46. │ ├─rlang::try_fetch(...)
#> 47. │ │ ├─base::tryCatch(...)
#> 48. │ │ │ └─base (local) tryCatchList(expr, classes, parentenv, handlers)
#> 49. │ │ │ └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
#> 50. │ │ │ └─base (local) doTryCatch(return(expr), name, parentenv, handler)
#> 51. │ │ └─base::withCallingHandlers(...)
#> 52. │ └─ggplot2 (local) f(l = layers[[i]], d = data[[i]])
#> 53. │ └─l$compute_aesthetics(d, plot)
#> 54. │ └─ggplot2 (local) compute_aesthetics(..., self = self)
#> 55. │ └─base::lapply(aesthetics, eval_tidy, data = data, env = env)
#> 56. │ └─rlang (local) FUN(X[[i]], ...)
#> 57. └─base::.handleSimpleError(`<fn>`, "object 'mpga' not found", base::quote(NULL))
#> 58. └─rlang (local) h(simpleError(msg, call))
#> 59. └─handlers[[1L]](cnd)
#> 60. └─cli::cli_abort(...)
#> 61. └─rlang::abort(...)
Created on 2024-06-11 with reprex v2.0.2
library(tidyverse)
library(ggplot2)
library(tutorial.helpers)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-11 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
library(tidyverse)
library(reprex)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-11 with reprex v2.1.0
search()
[1] ".GlobalEnv" "package:reprex"
[3] "package:tutorial.helpers" "package:lubridate"
[5] "package:forcats" "package:stringr"
[7] "package:dplyr" "package:purrr"
[9] "package:readr" "package:tidyr"
[11] "package:tibble" "package:ggplot2"
[13] "package:tidyverse" "tools:rstudio"
[15] "package:stats" "package:graphics"
[17] "package:grDevices" "package:utils"
[19] "package:datasets" "package:methods"
[21] "Autoloads" "package:base"
ऀ
#> Error: <text>:2:2: unexpected '['
#> 1: search()
#> 2: [
#> ^
#> Error: <text>:2:2: unexpected '['
#> 1: search()
#> 2: [
#> ^
Created on 2024-06-11 with reprex v2.1.0
library(tidyverse)
ggplot(data = mtcars,
mapping = aes(x = cyl, y = mpga)) +
geom_col()
#> Error in `geom_col()`:
#> ! Problem while computing aesthetics.
#> ℹ Error occurred in the 1st layer.
#> Caused by error:
#> ! object 'mpga' not found
Created on 2024-06-10 with reprex v2.1.0