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dlls
2004 Apr 15
1
tapply() and barplot() help files for 1.8.1
...n the output of tapply() before using barplot() because tapply()
produces a list and barplot() wants a vector or matrix.
In the code below, z is a dataframe, yllperdth is a numeric and fld
is the name of a factor, both in the dataframe.
Old version (as used with R 1.8.1):
## Calculate the % of YLLs for each group in the cause classification.
x <- tapply(z$yllperdth, z[, fld], sum)
totalYLLs <- sum(x)
x <- x / totalYLLs * 100
x <- sort(x)
## Plot the chart. horiz = TRUE makes it a bar instead of
## column chart. las = 1 prints the labels horizontally.
xplot <-...