Sorry for my mistake, I set Chinese help mailing list as r-h...@r-china.org, the first time I sent my test mail, I use auto-complete in gmail to finish my input, so I sent chinese character to English help mailing list, anyway, that warned me the potential problem in the future.
I have change the Chinese mailing list name to, without prefix 'r-', or any other mailing list, below is the new one. h...@r-china.org In order to avoid auto-complete mistake in the future. Sorry to bother you guys Thanks Tengfei -- Tengfei Yin MCDB PhD student 1620 Howe Hall, 2274, Iowa State University Ames, IA,50011-2274 Homepage: www.tengfei.name <http://www.tengfei.name>R Chinese: www.r-china.org [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.