[R-lang] fixing R for Linux bug

[David Reitter]

Hi James,

first of all, it might be more straightforward to implement this with  
a server-based solution - even a simple CGI would be able to write  
the results of the experiment to a file and store any other  
persistent data, and then call R. (The other advantage would be that  
you wouldn't have to use JavaScript.) But on the other hand, your  
solution might be more educational to the user, because they see what  
they're doing.

> This R code works fine in Windows and Mac versions of R, but not in  
> the
> Linux version, apparently due to differences in how line breaks are
> handled,

I noticed this:

> NL = "\r\n" # New line

in your code. Note that on Unix, a newline is just LF, so  "\n" would  
be what you want.
Does that solve your problem?

> and maybe also differences in how big the clipboard is for
> pasting code into Linux R.

That should be easy to diagnose -- do you copy&paste it into a  
running R session in a terminal?  Then you're at the mercy of the  
terminal app that the user runs (and their browser)... So copy&paste  
is kind of an awkward solution - could your Javascript not offer a  
link that'll save the code to a file (as a download)?

Hope that helps
- David


--
David Reitter
ICCS/HCRC, Informatics, University of Edinburgh
http://www.david-reitter.com




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