Re: [R] ggplot2/aesthetic plotting advice

2009-04-23 Thread ONKELINX, Thierry
aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey -Oorspronkelijk bericht- Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens Ben Bolker Verzonden: donderdag 23 april 2009 6:20 Aan: r-help@r-pro

[R] ggplot2/aesthetic plotting advice

2009-04-22 Thread Ben Bolker
Consider the following situation: we have quantified algal concentrations for a variety of species using many samples at each of three years. It seems to make sense to generate a line plot (matplot-like), with each species plotted as a separate line, with the points connected to emphasize th