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The handy function summary() doesn't work correctly with Date class objects: > R.version.string [1] "R version 1.9.1, 2004-06-21" > b <- as.Date(c("2002-12-26", "2002-12-27", "2002-12-28", "2002-12-29...
I'm looking for a way to plot lines on top of a levelplot(), where the lines are borders between cells of different values. The clines() function provides contours suitable for continuous data. I am dealing with discrete values, spatial...
I would like to generate a vector having the same length as the number of rows in a matrix. The vector should contain an integer indicating the "group" of the row, where identical matrix rows are in a group, and...
> Hello R Community, > > I would like to be able to download recent (yesterday's close is fine) > stock and > mutual fund prices from somewhere and use them for a personal finance > project. > Ideally, I would do this at a website...
I am trying to process text fields scanned in from a csv file that is output from the Windows database program FileMakerPro. The characters onscreen look like regular text, but R does not like their underlying binary form. For example...
I am having trouble using get.arcdata() in RArcInfo. X and y coordinates are not what they should be. Can anyone suggest what might be wrong? I am using RArcInfo 0.4-1. Here is the metadata of my coverage...
A recent article in the earth science literature cited below and available at http://geography.uoregon.edu/datagraphics/EOS/ points out that rainbow color schemes and mixtures of green and yellow can be troublesome for people with color-deficient vision...
I have come across an apparent bug in the operation of Sweave. If I load the package R2HTML then execution of \Sexpr{} in an *.Rnw file no longer works. The \Sexpr{} code is simply written to the *.tex file. Below...
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