During startup - Warning messages:

Dear Sir/Madam,

After installing R, I saw this warning message in red when I open the R...

During startup - Warning messages:
1: Setting LC_CTYPE failed, using "C"
2: Setting LC_COLLATE failed, using "C"
3: Setting LC_TIME failed, using "C"
4: Setting LC_MESSAGES failed, using "C"
5: Setting LC_PAPER failed, using "C"

how shall I solve this ?

Thank you very much in advance.

The screenshot is of R.app.  So do follow the posting guide (see the 
footer):

'Platform-specific questions: There are lists R-sig-Mac, R-sig-Debian 
and R-sig-Fedora for R on Mac OS X, Debian/Ubuntu and Fedora/Redhat 
respectively. Questions specific to those platforms (especially re 
installation and the R.app GUI on Mac OS X) are more likely to get 
informed responses on the appropriate list.'

The answer is to set up your Mac correctly, and how to do so is not an R 
question, and the answers will be unintelligible to non-Mac users (and 
probably many Mac users too).  So ask in the right place.

Yj

______________________________________________
R-help at 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.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595