How to split a data frame by rows, and then process the blocks?

Question

I have a data frame with several columns, one of which is a factor called \"site\". How can I split the data frame into blocks of rows each with a unique value of \"site\",

Answer 1

You could use the split function If you opened your data as:

data <- read.table('your_data.txt', header=T)
blocks <- split(data, data$site)

After that, blocks contains data from each block, that you can access as other data.frame:

plot(blocks$ALBEN$year, blocks$ALBEN$peak)

And so on for each plot.