The code is shown below. I installed R using Conda (I'm working on a cluster and don't have sudo). Everything works normally except the text. I would appreciate it if someone can let me know how to fix this. Edit: I tried the solution offered by R Draws Plots with Rectangles Instead of Text, which is to install mscorefonts for the conda environment. But this doesn't fix the issue. If you carefully compare the plot I attached and the plot attached in the link, they are actually very different. In my plot, all the boxes have numbers in them, whereas in the plot in the link, all the boxes are blank.
$ conda install -c conda-forge r-base=3.6.1
$ conda install -c conda-forge mscorefonts
$ R --vanilla
# inside R:
> install.packages("ggplot2")
> library(ggplot2)
> df <- data.frame(x = 1:3, y = 2:4)
> ggplot(df, aes(x=x, y=y)) + geom_point() + ggsave("~/test/test_square2.png")
> sessionInfo()
R version 3.6.1 (2019-07-05)
Platform: x86_64-conda_cos6-linux-gnu (64-bit)
Running under: Ubuntu 16.04 LTS
Matrix products: default
BLAS/LAPACK: /bar/cfan/anaconda2/envs/ren/lib/R/lib/libRblas.so
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] ggplot2_3.3.3
loaded via a namespace (and not attached):
[1] digest_0.6.27 withr_2.4.1 crayon_1.4.0 grid_3.6.1
[5] R6_2.5.0 lifecycle_0.2.0 gtable_0.3.0 magrittr_2.0.1
[9] scales_1.1.1 pillar_1.4.7 rlang_0.4.10 farver_2.0.3
[13] vctrs_0.3.6 ellipsis_0.3.1 labeling_0.4.2 tools_3.6.1
[17] glue_1.4.2 munsell_0.5.0 compiler_3.6.1 pkgconfig_2.0.3
[21] colorspace_2.0-0 tibble_3.0.6
>
The plot is attached. As you can see, all text became random squares.
Final edit: this issue is solved by the solution offered in here: ggplot2 issue: graph text shown with weird unicode blocks
