[R] Range plots (lattice or base?)

From: Mike Bock <mbock_at_Environcorp.com>
Date: Thu 20 Oct 2005 - 04:53:46 EST

I am looking to create what I would call a "simple variation" on the boxplot. What I would like to do is to be able to plot the upper and lower confidence limits as the "box" and the 10th and 90th percentile as the whiskers. What I have done is write the code to create a dataframe, the columns of which are the mean, sd, 10th percentile, 90th percentile, lower confidence limit of the mean, and upper confidence limit of the mean, the rows are the groups. I have exported this to excel and get the graph I want by using the stock graphs in excel that plot open, close, high and low but I would much prefer to do this in R for reason too numerous to enumerate.

I have looked high and low and even took a brief look at the bwplot code in the lattice package. Given my experience level it would take quite a while for me to modify the bwplot code to get what I want and create a new graph type, assuming I could get it to work at all. Does anyone know of an easier way to get what I want, with and example? Lattice, grid, base, whatever, I don't especially care what tools I need to use. My only constrante is that I feed it the values required as a dataframe rather than calculate it on the fly so if we change our minds about UCL method or percentiles there is no problem.

Thanks in advance,

Michael Bock PhD
ENVIRON International Corporation
136 Commerical Street, Suite 402
Portland, ME 04101
phone: not active yet
fax: not active yet

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