Autplot for Benchmarking (Change order of boxplots/tasks)

[FionaKunz]

Hi!

Plotting my benchmark results, I would like to change the order of the boxplots from alphabetical order (default in autoplot function?) to another order. So far, I was able to change the respective task's boxplots the following way (see code). However, since recently, changing the levels of the task_id-factor variable, only changes the order of the title, but not the respective boxplots themselves.

How can I change the order of the boxplots? Any help highly appreciated! Thanks a lot

library(mlr3)
library(mlr3viz)

tasks = tsks(c("pima", "sonar"))
learner = lrns(c("classif.featureless", "classif.rpart"),
               predict_type = "prob")
resampling = rsmps("cv")
bmr = benchmark(benchmark_grid(tasks, learner, resampling))

# AUC
bmr_boxplots_auc <- autoplot(bmr, measure = msr("classif.auc")) + 
  ggplot2::theme(axis.text.x = ggplot2::element_text(hjust = .5)) + 
  ggplot2::scale_x_discrete(labels =c("FL", "RF", "LR"))+
  ggplot2::ylab("AUC")+
  ggplot2::xlab("Learner")+
  ggplot2::theme_bw()+
  ggplot2::theme(panel.grid = element_blank(),
                 strip.background = element_blank()
  )
bmr_boxplots_auc
bmr_boxplots_auc$data$task_id <- as.factor(bmr_boxplots_auc$data$task_id) 
levels(bmr_boxplots_auc$data$task_id) = c("sonar", "pima")
bmr_boxplots_auc

[pat-s]

@FionaKunz This is a bit tricky as one needs to modify the order of a factor.

I've added support for this in #102, you can try installing the branch to use it.

library(mlr3)
library(mlr3viz)

tasks <- tsks(c("pima", "sonar"))
learner <- lrns(c("classif.featureless", "classif.rpart"),
  predict_type = "prob"
)
resampling <- rsmps("cv")
lgr::get_logger("mlr3")$set_threshold("error")
bmr <- benchmark(benchmark_grid(tasks, learner, resampling))

autoplot(bmr, measure = msr("classif.auc"), custom_facet_order = c("pima", "sonar"))

autoplot(bmr, measure = msr("classif.auc"), custom_facet_order = c("sonar", "pima"))

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

Session info

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