[R] Reshaping and plotting tabular data

From: tsippel <tsippel_at_gmail.com>
Date: Thu, 14 Apr 2011 07:34:30 -1000

Tabular data have been provided to me within .csv files. I need to transform the data from tabular format into a dataframe with three columns. The columns need to be the table row id, table column id, and the tabulated variable. An example dataset can be downloaded here:


So I need that to be like:

Season Area Variable
2009-10 38 5
2008-09 38 NA
2009-10 39 1
2008-09 39 3

>From there I need to show 'Variable' as a series of bubbles scaled to
summary categories of 'Variable'.
If x is my object storing the data frame above, something like:

x$var.cat[x$Variable %in% 1:5] <- 1
x$var.cat[x$Variable %in% 6:10] <- 2

plot(x=x$Area, y=x$Season, type='n')
points(x=x$Area, y=x$Season, pch=1, cex=x$var.categ)

Transforming tabular data has turned out to be trickier than I expected and I would appreciate advice. Although my bubble plot scheme should work, it would be nice to hear of better ways on that too...


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