[R] aggregation question

Dr Eberhard Lisse el at lisse.NA
Wed Jul 6 12:41:11 CEST 2011


I am reading payment data like so


and plot it aggregated per month like so

df <- read.csv("daily.csv", colClasses=c(d="Date",s="numeric"))
z <- zoo(df$s, df$d)
z.mo <- aggregate(z, as.yearmon, sum)
barplot(z.mo, col="darkblue")

How do I get the monthly aggregated payments in different colors
next to each other (ie for each year in a different color with the x
axis showing the months)?

Solution preferred, but pointers to documentation welcome :-)-O

greetings, el

Dr. Eberhard W. Lisse  \        / Obstetrician & Gynaecologist (Saar)
el at lisse.NA el108-ARIN / *     |   Telephone: +264 81 124 6733 (cell)
PO Box 8421             \     /   Please do NOT email to this address
Bachbrecht, Namibia     ;____/        if it is DNS related in ANY way

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