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demo("graphics") notes that a circle (piechart) is a test of monitor linearity. With a new monitor on a new linux system with R-0.65.0 I get an ellipse. This is not a pincushion effect and the major/minor axis ratio is constant over size and screen location variation. Is this a hardware problem or are there alternative possible explanations to explore? Gordon M. Harrington Mail: 3720

This _may_ be another example of the "space" problem. Numeric fields with embedded spaces have often been converted to factors by read.table (although I confess to not having the latest version). I usually use tr -d ''\40'' < oldfile > newfile to remove the spaces and have no problem. Jim