Displaying table values by fraction in R

Question

I have a table in R , and I would like to change each row so that the numbers come in proportionally as opposed to the total.

For example if my first line is 2.2.0 I want to do this 0.5, .5.0

Likewise if the line is 4,15,1 I want to do this 0.2, 0.75, 0.05

Is there a way to do this with the entire table at once? I know this is probably pretty easy, but I've been working on it for a long time.

+3

r

CHN Apr 20 15 at 12:35 am

2 answers

If your data is a matrix,

my_data = matrix(rpois(12, lambda = 5), nrow = 4)

then this is one way to do it:

my_data / rowSums(my_data)

+4

Gregor Apr 20 15 at 0:58

Jota · Accepted Answer · 2015-04-20T00:56:57+0000

You can try this:

# sample data
a <- rbind(c(2,2,0), c(4,15,1))


# solution
a / apply(a, 1, sum)
#  [,1] [,2] [,3]
#b  0.5 0.50 0.00
#a  0.2 0.75 0.05

Displaying table values ​​by fraction in R