![]() There are a number of ways to achieve this. Note also that the code is longer than it needs to be, because it is spaced and commented for clarity. In all the code that follows, you'll have to change the path names to reflect where you actually put these files. ![]() These files are all comma-separated value (CSV) text files: Two-panel plot with horizontal and vertical error bars.Update 2011: these days it looks much easier to work with the ggplot2 library see basic graphs 2. So to begin with, I'll replicate most of the major graph types I created with SigmaPlot for my PhD and MD theses. What we'll be concerned about here is producing publication-quality simple graphs of the types frequently seen in the fields of experimental psychology and behavioural neuroscience, to get you going quickly. R is a very powerful graphing package for examples of what it can do, see the R Graph Gallery.
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