[R] warning : increasing the PDF version to 1.3

Prof Brian Ripley ripley at stats.ox.ac.uk
Sat Nov 15 20:44:38 CET 2008

On Sun, 16 Nov 2008, June Kim wrote:

> What does the warning mean?
> In dev.off() : increasing the PDF version to 1.3

It means you have an obsolete version of R, and failed to follow the 
posting guide in telling us what it is.  ?pdf should explain the message 
to you in your version of R.  E.g. 2.6.0 has

  version: a string describing the PDF version that will be required to
           view the output.  This is a minimum, and will be increased
           (with a warning) if necessary.

      The 'version' argument declares the version of PDF that gets
      produced.  The version must be at least 1.4 for semi-transparent
      output to be understood, and at least 1.3 if CID fonts are to be
      used: if these features are used the version number will be
      increased (with a warning).  Specifying a low version number (as
      the default) is useful if you want to produce PDF output that can
      be viewed on older or non-Adobe PDF viewers.  (PDF 1.4 requires
      Acrobat 5 or later.)

The default value is "1.4" these days.

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

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