R devel - Jun 2021 - How to get utf8 string using R externals

First; you should configure yopu mail client to send plain text.

Can you explain what is meant by:

the characters are unicodes (<U+BD80><U+C2E4>) instead of
utf8 encoding of the korean characters ??.

As far as I can tell those two unicodes _are_ the utf8 encodings of ??.

You may need to consult a couple of R help pages. I suggest:

?Quotes
?points   # has examples of changing fonts used for display on console.

Sorry if I've misunderstood. I'm not on a Windows device, so  posting
the C++ program won't be helpful, but maybe it would for other prospective
respondents.

-- 
David.

On 6/2/21 1:33 PM, xiaoyan yu wrote:
> I have a R Script Predict.R:
>      set.seed(42)
>      C <- seq(1:1000)
>      A <- rep(seq(1:200),5)
>      E <- (seq(1:1000) * (0.8 + (0.4*runif(50, 0, 1))))
>      L <- ifelse(runif(1000)>.5,1,0)
>      df <- data.frame(cbind(C, A, E, L))
> load("C:/Temp/tree.RData")                #  load the model for
scoring
>
>    P <- as.character(predict(tree_model_1,df,type='class'))
>
> Then in a C++ program
> I call eval to evaluate the script and then findVar the P variable.
> After get each class label from P using string_elt and then
> Rf_translateChar, the characters are unicodes
(<U+BD80><U+C2E4>) instead of
> utf8 encoding of the korean characters ??.
> Can I know how to get UTF8 by using R externals?
>
> I also found the same script giving utf8 characters in RGui but unicode in
> Rterm.
> I tried to attach a screenshot but got message "The message's
content type
> was not explicitly allowed"
> In RGui, I saw the output ??, while in Rterm, <U+BD80><U+C2E4>.
>
> Please help.
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

I am using gmail. Not sure of the configuration of plain text.
The memory pointed by the char * as the output of Rf_translateChar() is
actually the string "<U+BD80><U+C2E4>".



On Wed, Jun 2, 2021 at 6:09 PM David Winsemius <dwinsemius at comcast.net>
wrote:
> First; you should configure yopu mail client to send plain text.
>
> Can you explain what is meant by:
>
> the characters are unicodes (<U+BD80><U+C2E4>) instead of
> utf8 encoding of the korean characters ??.
>
> As far as I can tell those two unicodes _are_ the utf8 encodings of ??.
>
> You may need to consult a couple of R help pages. I suggest:
>
> ?Quotes
> ?points   # has examples of changing fonts used for display on console.
>
> Sorry if I've misunderstood. I'm not on a Windows device, so 
posting the
> C++ program won't be helpful, but maybe it would for other prospective
> respondents.
>
> --
> David.
>
> On 6/2/21 1:33 PM, xiaoyan yu wrote:
> > I have a R Script Predict.R:
> >      set.seed(42)
> >      C <- seq(1:1000)
> >      A <- rep(seq(1:200),5)
> >      E <- (seq(1:1000) * (0.8 + (0.4*runif(50, 0, 1))))
> >      L <- ifelse(runif(1000)>.5,1,0)
> >      df <- data.frame(cbind(C, A, E, L))
> > load("C:/Temp/tree.RData")                #  load the model
for scoring
> >
> >    P <- as.character(predict(tree_model_1,df,type='class'))
> >
> > Then in a C++ program
> > I call eval to evaluate the script and then findVar the P variable.
> > After get each class label from P using string_elt and then
> > Rf_translateChar, the characters are unicodes
(<U+BD80><U+C2E4>) instead
> of
> > utf8 encoding of the korean characters ??.
> > Can I know how to get UTF8 by using R externals?
> >
> > I also found the same script giving utf8 characters in RGui but
unicode
> in
> > Rterm.
> > I tried to attach a screenshot but got message "The message's
content
> type
> > was not explicitly allowed"
> > In RGui, I saw the output ??, while in Rterm,
<U+BD80><U+C2E4>.
> >
> > Please help.
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-devel at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel
>
	[[alternative HTML version deleted]]