This could be a problem with Highcharts, since rCharts merely passes the data on to highcharts. If you can post a minimal reproducible example, it would be useful to help debug.

Thank u very much for replying.
Here is the example.I put the CSV here.
I am new to R,and the encoding problem really drove me crazy ( > <
any suggestion would be very welcome!!
ftp://115.29.147.107/share/gb2312.csv
And the R code would be like this.(The column title is where gibberish occurs).

library(rCharts)
library(httr)
library(RJSONIO)
paresed_data <- read.csv("gb2312.csv",header = TRUE,sep = ",",quote="\"")

data <- subset(paresed_data,select = c(title,name,id))
tmp_data <- data.frame(table(data$id),stringsAsFactors = FALSE)
descs <- data[!duplicated(data$id),]
descs <- subset(descs,select = c(title,name))
msg_cnt <- tmp_data$Freq
id <- tmp_data$Var1
df <- data.frame(id,msg_cnt,descs, stringsAsFactors = FALSE)
df <- head(x = df,n = 20)
colnames(df) <- c("id","msgCnt","title","name")

h2 <- hPlot(
    x = "id",
    y = "msgCnt",
    data = df,
    type = "scatter",
    title = "top n speakers", 
    group ="title"
)
h2

And my screenshot is like this

If the pic is broken, u can get it here ftp://115.29.147.107/share/Rplot.png

I found iconv helps... with some letters,but there are still some gibberish .
`iconv(x,from = "gb2312",to = "utf-8")

Not sure how much I can help here. So I am copying the exports on encoding, @yihui and @kohske : Do you guys have any thoughts on what might be causing some letters to show up as gibberish?

I might be able to figure out what went wrong here, but I probably do not have enough time for it at the moment.

No worries @yihui. Whenever you find the time, that would be great. Maybe @kohske will be able to help. Thanks in any case.

It appears this is only an issue for Windows. Under Mac if you set locale to UTF-8 and specify fileEncoding="gb2312" when reading the data, everything will happily live as Unicode.

However R Windows doesn't appear to support an UTF-8 locale. When rCharts write stuff to a file, it uses your default locale but marks the HTML file using utf-8 charset. If we change the meta tag in HTML to gb2312 (or manually change encoding in browser), it will work fine.

Long story short, I think we can fix this by using file(..., encoding = "UTF-8") as the target for writeLines.

I have created a patch and you can give it a try by devtools::install_github("saurfang/rCharts", ref = "utf8-writelines")
Tested under Windows and Mac and so far this seems to do the trick.
@ramnathv @yihui Feel free to code review at saurfang@f8105b5

If this works for you, let us know and I'll submit a pull request for this to merged.

Yes, @saurfang is on the correct way. Actually we've done it on slidify here: ramnathv/slidify@2434289

Here is a quick and temporal workaround:

path <- tempfile(fileext = ".html")
writeLines(h2$render(), file(path, "w", encoding="utf8"))
browseURL(path)

Thanks @saurfang and @kohske. @saurfang you can go ahead and send me a PR for this to be merged.

Thank you all very much,I will try it today,if it works or not, I will let you know @saurfang.
I am really getting crazy with encoding problems in R until you help me!
谢谢！

@saurfang I'm sorry to tell you that after installing your rChart,when I use rChart to draw something(even if the demo on rcharts.io),it can't be seen on the viewer, and R kept warning me like this

1: closing unused connection 5 (C:\Users\xxx\AppData\Local\Temp\Rtmp08kaj0\rCharts16f44297fa9/index.html)

I used the following command to install your package.

remove.packages("rCharts")
devtools::install_github("saurfang/rCharts", ref = "utf8-writelines")

And later I reinstalled the master version of rCharts, it became OK.
I do not know it is a bug, or I did something wrong .Just inform you about it.

@FingerLiu See my comment at #552 (diff)

We see writeLines in other places, so these should be fixed. Possibly we may have an single function that outputs to a file.

Ah yes. My bad. Thanks @yihui
@FingerLiu Do you mind try installing it again? It should work fine this time.

How about a write_file function that wraps writeLines in the same spirit of read_file function in utils.R?

That sounds like a good idea @FingerLiu. Can you make that change in the PR?

Alright changes have been made that we now use write_file instead of writeLines and it uses UTF-8 by default. Hopefully I have caught all those places.
I have tested it by printing plot in RStudio, save plot to a file, show plot in RMarkdown (which to my understanding shouldn't be affected in the first palce), make_chart to a file, and publish it on gist: http://rcharts.io/viewer/?41265ce302193c23cd77#.VGqrMXHF_OM

Do you guys mind giving it a code review and let me know your thoughts? #552

Hi,@saurfang ,thanks for fixing this. I try again and it works fine with the example above.

But when I read a csv encode in UTF-8,it goes wrong again.
I changed the encoding of the CSV above,and I read the CSV like this

paresed_data <- read.csv("data//utf8.csv",header = TRUE,sep = ",",quote="",stringsAsFactors = FALSE,encoding = "utf-8")

Am I doing sth wrong?
Is that only files encoded in locale can be parsed in R ,and because of the reason you mentioned

However R Windows doesn't appear to support an UTF-8 locale.
I can not parse a utf-8 file in R on Windows?

@FingerLiu try fileEncoding='utf-8' rather than encoding='utf-8'. Not sure if it works well though...