From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vicente Vera <vichovp@gmail.com>
Subject: PNG R plots size
Date: Mon, 16 Dec 2013 23:30:40 -0200
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Hello. I have a source code block for an R plot with the following
header:

#+BEGIN_SRC R :results output graphics :file figure1.png :exports results

It works, but the default size is too small. When I change the
extension to SVG or PDF (i.e. when exporting to LaTeX, but is not what
i need right now) the dimensions are fine.

How can I control the size of a PNG graphic? Do I need to tweak
something inside Org or specify something in R?

Thanks.