Pass latex2exp for axis titles

[dpolhamus]

Would be nice to pass expressions or plotmath to x_lab, e.g., particularly latex2exp output.

[barrettk]

From offline conversation:
The lines below should work. Specifically, I think we'll have to determine the class, and then correctly handle the plotmath attribute:

> lab.y <- latex2exp::TeX(paste("Probability of",str_replace(spec[[params$ep]]$short,"^Any","any")), output = "expression")
> lab.y
   LaTeX: Probability of any AE, Grade $\geq 3$ 
plotmath: 'Probability of any AE, Grade ' * {phantom() >= phantom()} * 3 
> sim_summary %>%
+   ungroup %>%
+   mutate(gl = sprintf("%s (%s)",JPGR, DOSCAT)) %>%
+   pmforest::summarize_data(value = prob, group = TYPEHER2, group_level= gl) %>%
+   pmforest::plot_forest(digits=2, x_lab = substitute(lab.y))

[barrettk]

Hey @dpolhamus, im just getting to this issue now.

I was able to get the following code to work with pmforest 0.1.0

Code

# Data
dataDir <- system.file("test-data", package = "pmforest")
plotData <- readRDS(file.path(dataDir, "plotData.RDS"))

# Summarize Data
sumData <- plotData %>%
  summarize_data(
    value = stat,
    group = GROUP,
    metagroup = param,
    group_level = LVL
  )

# latex2exp/plotmath label
lab.y <- latex2exp::TeX("probability of Grade $\\geq 3$", output = "expression")
> lab.y
   LaTeX: probability of Grade $\geq 3$ 
plotmath: 'probability of Grade ' * {phantom() >= phantom()} * 3 

Plot

plot_forest(sumData, x_lab = lab.y, CI_label=" ")

That yielded:

As you can see, the label updated correctly. Note that substitute(lab.y) also worked, and returned the same plot. I'll leave the issue open for now just in case you discover some nuance in the near future.

Session Info

R version 4.1.1 (2021-08-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 18.04.5 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/libopenblasp-r0.2.20.so

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8     LC_MONETARY=en_US.UTF-8   
 [6] LC_MESSAGES=en_US.UTF-8    LC_PAPER=en_US.UTF-8       LC_NAME=C                  LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base     

other attached packages:
[1] pmforest_0.1.0 testthat_3.1.5

loaded via a namespace (and not attached):
 [1] pkgload_1.3.1      tidyr_1.2.1        here_1.0.1         pmtables_0.4.0     brio_1.1.3         shiny_1.7.3        assertthat_0.2.1  
 [8] renv_0.14.0        yaml_2.3.6         remotes_2.4.2      sessioninfo_1.2.2  pillar_1.8.1       glue_1.6.2         digest_0.6.30     
[15] RColorBrewer_1.1-3 promises_1.2.0.1   colorspace_2.0-3   htmltools_0.5.3    httpuv_1.6.6       pkgconfig_2.0.3    devtools_2.4.5    
[22] purrr_0.3.5        xtable_1.8-4       patchwork_1.1.2    scales_1.2.1       vdiffr_1.0.4       processx_3.8.0     later_1.3.0       
[29] tzdb_0.3.0         tibble_3.1.8       farver_2.1.1       generics_0.1.3     ggplot2_3.4.0      usethis_2.1.6      ellipsis_0.3.2    
[36] cachem_1.0.6       withr_2.5.0        cli_3.4.1          magrittr_2.0.3     crayon_1.5.2       mime_0.12          memoise_2.0.1     
[43] evaluate_0.18      ps_1.7.2           fs_1.5.2           fansi_1.0.3        forcats_0.5.2      pkgbuild_1.3.1     profvis_0.3.7     
[50] tools_4.1.1        prettyunits_1.1.1  hms_1.1.2          lifecycle_1.0.3    stringr_1.4.1      munsell_0.5.0      callr_3.7.3       
[57] compiler_4.1.1     rlang_1.0.6        grid_4.1.1         rstudioapi_0.14    htmlwidgets_1.5.4  miniUI_0.1.1.1     labeling_0.4.2    
[64] rmarkdown_2.18     gtable_0.3.1       DBI_1.1.3          R6_2.5.1           gridExtra_2.3      knitr_1.40         dplyr_1.0.10      
[71] fastmap_1.1.0      utf8_1.2.2         yspec_0.5.1        rprojroot_2.0.3    latex2exp_0.9.5    readr_2.1.3        desc_1.4.2        
[78] stringi_1.7.8      Rcpp_1.0.9         vctrs_0.5.0        tidyselect_1.2.0   xfun_0.34          urlchecker_1.0.1