matrix-columns don't show up correctly in View() or with paged printing in RMarkdown

[Aariq]

I'm not sure if this is an issue with tibble, utils, rmarkdown, or Rstudio itself, so please excuse me if this is in the wrong place. If you create a tibble with a matrix-column (like a list-column, but the column is a matrix), only the first column of the matrix shows up in View() with no indication that there is more to see.

library(tibble)
library(readr)
set.seed(123)
my_matrix <- matrix(rnorm(100), nrow = 10)
tbl <- tibble(x = letters[1:10], mat_col = my_matrix)
tbl
#> # A tibble: 10 x 2
#>    x     mat_col[,1]   [,2]   [,3]    [,4]    [,5]    [,6]    [,7]   [,8]
#>    <chr>       <dbl>  <dbl>  <dbl>   <dbl>   <dbl>   <dbl>   <dbl>  <dbl>
#>  1 a         -0.560   1.22  -1.07   0.426  -0.695   0.253   0.380  -0.491
#>  2 b         -0.230   0.360 -0.218 -0.295  -0.208  -0.0285 -0.502  -2.31 
#>  3 c          1.56    0.401 -1.03   0.895  -1.27   -0.0429 -0.333   1.01 
#>  4 d          0.0705  0.111 -0.729  0.878   2.17    1.37   -1.02   -0.709
#>  5 e          0.129  -0.556 -0.625  0.822   1.21   -0.226  -1.07   -0.688
#>  6 f          1.72    1.79  -1.69   0.689  -1.12    1.52    0.304   1.03 
#>  7 g          0.461   0.498  0.838  0.554  -0.403  -1.55    0.448  -0.285
#>  8 h         -1.27   -1.97   0.153 -0.0619 -0.467   0.585   0.0530 -1.22 
#>  9 i         -0.687   0.701 -1.14  -0.306   0.780   0.124   0.922   0.181
#> 10 j         -0.446  -0.473  1.25  -0.380  -0.0834  0.216   2.05   -0.139
#> # … with 2 more variables: [,9] <dbl>, [,10] <dbl>

^{Created on 2021-01-11 by the reprex package (v0.3.0)}

But with View():

Similarly, in RMarkdown documents with paged printing of dataframes, only an empty in-line viewer box shows up.

possibly related: tidyverse/readr#1171

[krlmlr]

Thanks. We can't control what happens in the RStudio viewer here. We could in theory change tibble::view() to give a better experience here. Otherwise https://github.com/rstudio/rstudio/ has an issue tracker where this would be more appropriate.

[krlmlr]

I'd rather avoid dealing with this in view().

[github-actions]

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