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2008 Dec 05
1
Problems with lattice-histograms or png within loops
Dear R-users, I have a question concerning the use of lattice plots within for-loops. I want to create a png file containing a lattice histogram which works out fine (part 1). When I loop the whole code, the graphic file does not contain anything (part 2). I can fix it by wrapping the histogram function into a print command (part 3). Why is that so? Why can I not loop it directly? TIA, Mark