You may also have a look here: http://flowingdata.com/2010/11/23/how-to-make-bubble-charts/
Note the "Circles incorrectly sized by radius instead of area. Large values appear much bigger." Similar point made here: https://stat.ethz.ch/pipermail/r-help/2011-January/265475.html Message: 44 Date: Mon, 22 Oct 2012 08:05:24 -0700 (PDT) From: swertie <v_coudr...@voila.fr> To: r-help@r-project.org Subject: Re: [R] Represent point size according to frequency Message-ID: <1350918324783-4647022.p...@n4.nabble.com> Content-Type: text/plain; charset=us-ascii Thank you very much. I managed to do it with a similar approach and it looks like what I expected. -- Henrik Pärn Centre for Conservation Biology Department of Biology Norwegian University of Science and Technology NO-7491 Trondheim NORWAY Office: +47 735 96084 Mobile: +47 909 89 255 Fax: +47 735 96100 [[alternative HTML version deleted]]
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