matrix row/column indexing in R + csv input

gistfile1.txt

> a <- array(1:20, dim=c(4:5))
> a
     [,1] [,2] [,3] [,4] [,5]
[1,]    1    5    9   13   17
[2,]    2    6   10   14   18
[3,]    3    7   11   15   19
[4,]    4    8   12   16   20
> a[1,]
[1]  1  5  9 13 17
> a[,2]
[1] 5 6 7 8

> path <- "/Users/warrenhenning/path/to/data/foo.csv"
> results <- read.table(path, header=TRUE, sep=",")

# or just use read.csv

> results <- read.csv(path)

# filter the table by the value of a column

> interesting_results <- subset(results, 'farts' == 'butts') # only select rows where the 'farts' column is equal to 'butts'