Unicode, Shiny, RStudio, and Windows (example 022-unicode-chinese)

[Jonathan Gilligan]

I have read the article about using Unicode under Windows, but I am still confused about how to make it work.

If I check out the shiny-examples from Github and try to run example-022 under RStudio 0.98.1103 with R 3.1.3 under Windows 7, it does not run properly.

When I click "Run App" I get a bunch of error messages in the console like  "Warning in checkEncoding(desc) : The file "shiny-examples/022-unicode-chinese/global.R" is not encoded in UTF-8. Please convert its encoding to UTF-8 (e.g. use the menu `File -> Save with Encoding` in RStudio). " but when I open all the .R files in RStudio and save them with UTF-8 encoding (Menu "File/Save with encoding..."), the errors about not being encoded in UTF-8 persist every time I run the app.

I also get error messages about "Error in fromJSON(content, handler, default.size, depth, allowComments, : invalid JSON input"

The characters do not display

Can someone give me advice about how to make this example work properly under Windows 7?

[Yihui Xie]

You are recommended to run this app in the Simplified Chinese locale:
you may be able to change it from the control panel of your system.
Without the correct locale, it is difficult for R to read and display
the multi-byte characters in the app.

Regards,
Yihui

[Jonathan Gilligan]

I was hoping to write a shiny app that would interact with the user in Bengali, but I don't want to reconfigure my system to use the Bengali locale for the whole OS.

I was hoping that I could just configure things within my Shiny app to interact with the web page in UTF-8 and accept multibyte input from the user without changing the System-wide locale, but from what you way, it sounds like that's not possible under Windows.

[Yihui Xie]

You don't have to change the system locale as long as your system
supports the Bengali locale. You may just change the locale of the R
session by

Sys.setlocale(, 'Bengali')

Then shiny::runApp(). I'm not 100% sure if 'Bengali' is a valid locale
name on Windows, but you can try.

Regards,
Yihui


On Fri, Apr 3, 2015 at 9:02 AM, Jonathan Gilligan

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[Jonathan Gilligan]

Thanks. That helps a lot.