search for: netepi

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2006 May 13
2
Adding error bars to a trellis barchart display
Hi all -- I'm using trellis to generate bar charts, but there's no built-in function to generate error bars or confidence intervals, as far as I can tell. I assumed I could just write my own panel function to add them, so I searched the archive, and found a posting from the author of the package stating "... placing multiple bars side by side needs specialized calculations, which