shiny not working installed with conda

roalva1 · March 13, 2020, 6:04pm

Hello,

the first example of shiny is not working if I install R and shiny with conda in ubuntu 18.04. I do this:
conda create -n r_env
conda activate r_env
conda install -c r r
conda install -c r r-shiny (or install.packages("shiny"))

Then I open rstudio and run this
shiny::runExample("01_hello")

and I can see the sliderInput but not the histogram. I open the webpage created by shiny and then the developer tools from Chrome and it says:

Uncaught SyntaxError: Unexpected number in JSON at position 16062
at JSON.parse ()
at ShinyApp.dispatchMessage (shinyapp.js:495)
at WebSocket.c.onmessage (shinyapp.js:112)

However if I install R in the system and shiny with install.packages (no conda involved) everything works perfectly.

Best

andresrcs · March 13, 2020, 6:53pm

As far as I know, Shiny is not officially supported through conda so I think it would be better to point this out on a conda related forum.

Etjean · April 16, 2020, 12:44pm

Hello,
I am currently facing the exact same problem, and this is the only post I could find about it. Have you found any solution ? Or even narrowed down the search ?
Thanks in advance

roalva1 · April 19, 2020, 10:44am

Hello Etjean,

I didn't try the purposed solution, sorry.

leitheim · May 21, 2020, 2:43pm

I'm currently facing the same problem. I'd be thankful for any solutions or referrals to other communities that might be able to help.

Thanks!

winston · May 21, 2020, 5:29pm

We've found the cause of the problem. It appears to be an incorrect locale setting used by conda.
According to the documentation for Sys.setlocale, LC_NUMERIC should always be set to "C", but with conda, it may be set to a different value.

To fix it, you can run this in your R session:

Sys.setlocale("LC_NUMERIC", "C")

Please see here for more information:

github.com/rstudio/shiny

Plots not showing (no error)

opened 07:53AM - 16 Apr 20 UTC

closed 07:30AM - 20 Apr 20 UTC

Etjean

### System details Browser Version: Firefox 75.0 & Chrome 80.0.3987.162 Output of `sessionInfo()`: ``` R version 3.6.1 (2019-07-05) Platform: x86_64-conda_cos6-linux-gnu (64-bit) Running under: Ubuntu 18.04.4 LTS Matrix products: default BLAS/LAPACK: /home/etienne/miniconda3/envs/R/lib/R/lib/libRblas.so locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=fr_FR.UTF-8 [3] LC_TIME=fr_FR.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=fr_FR.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=fr_FR.UTF-8 LC_NAME=fr_FR.UTF-8 [9] LC_ADDRESS=fr_FR.UTF-8 LC_TELEPHONE=fr_FR.UTF-8 [11] LC_MEASUREMENT=fr_FR.UTF-8 LC_IDENTIFICATION=fr_FR.UTF-8 attached base packages: [1] stats graphics grDevices datasets utils methods base other attached packages: [1] shiny_1.4.0.2 forcats_0.5.0 stringr_1.4.0 dplyr_0.8.5 [5] purrr_0.3.3 readr_1.3.1 tidyr_1.0.2 tibble_3.0.0 [9] ggplot2_3.2.1 tidyverse_1.3.0 loaded via a namespace (and not attached): [1] tidyselect_1.0.0 haven_2.2.0 lattice_0.20-40 colorspace_1.4-1 [5] vctrs_0.2.4 generics_0.0.2 htmltools_0.4.0 rlang_0.4.5 [9] pillar_1.4.3 later_1.0.0 glue_1.4.0 withr_2.1.2 [13] DBI_1.1.0 dbplyr_1.4.2 modelr_0.1.6 readxl_1.3.1 [17] lifecycle_0.2.0 munsell_0.5.0 gtable_0.3.0 cellranger_1.1.0 [21] rvest_0.3.5 fastmap_1.0.1 httpuv_1.5.2 fansi_0.4.1 [25] broom_0.5.5 Rcpp_1.0.4 xtable_1.8-4 scales_1.1.0 [29] backports_1.1.5 promises_1.1.0 jsonlite_1.6.1 mime_0.9 [33] fs_1.3.2 hms_0.5.3 digest_0.6.25 stringi_1.4.3 [37] grid_3.6.1 cli_2.0.2 tools_3.6.1 magrittr_1.5 [41] lazyeval_0.2.2 crayon_1.3.4 pkgconfig_2.0.3 ellipsis_0.3.0 [45] xml2_1.2.2 reprex_0.3.0 lubridate_1.7.4 assertthat_0.2.1 [49] httr_1.4.1 rstudioapi_0.11 R6_2.4.1 nlme_3.1-145 [53] compiler_3.6.1 ``` ### Example application *or* steps to reproduce the problem Example 1 : ```R runExample("01_hello") ``` Example 2 : ```R runExample("04_mpg") ``` Example 3 : (from the [shiny reference](https://shiny.rstudio.com/reference/shiny/1.4.0/plotOutput.html) ) ```R # A basic shiny app with a plotOutput shinyApp( ui = fluidPage( sidebarLayout( sidebarPanel( actionButton("newplot", "New plot") ), mainPanel( plotOutput("plot") ) ) ), server = function(input, output) { output$plot <- renderPlot({ input$newplot # Add a little noise to the cars data cars2 <- cars + rnorm(nrow(cars)) plot(cars2) }) } ) ``` ### Describe the problem in detail Hello, My problem : I cannot get any plot showing. No error is displayed, all other widgets and outputs are correctly rendered, but not plots. I have tried the following : - base plots and ggplots - firefox and chrome - shiny 1.4.0 and shiny 1.3.2 - R versions 3.6.1, 3.5.1 and 3.4.3 but the results remain the same. The problem is related to [this one](https://community.rstudio.com/t/shiny-not-working-installed-with-conda/56448). (I am also using a version of R installed with conda, but I do not understand why that makes shiny plots fail to display). And in my case, the Firefox developper console shows : > SyntaxError: JSON.parse: expected double-quoted property name at line 1 column 10523 of the JSON data. > dispatchMessage shinyapp.js:421 > onmessage shinyapp.js:83 I have searched for similar issues, but I did not find any working solution. Any idea is welcome. Thanks in advance.

system · July 14, 2020, 9:29pm

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