Wednesday, March 18, 2015

R : Subsetting data

To subset a data frame or matrix:


> x <- c(1,2,3,4,5,6)
> y <- c(3,5,2,4,1,4)
> z <- c(2,3,4,3,2,1)
> dataF<-data.frame(x,y,z)
> dataF
  x y z
1 1 3 2
2 2 5 3
3 3 2 4
4 4 4 3
5 5 1 2
6 6 4 1
dataF[2,]
  x y
2 2 5
dataF[2:5,]
  x y
2 2 5
3 3 2
4 4 4
5 5 1
dataF$x <- NULL
dataF
  y
1 3
2 5
3 2
4 4
5 1
6 4




If you are beginning with the R language, and need tips and help feel free to put down a comment below. 

No comments:

Troubleshooting Packet Drops in SolarFlare Onload 10G PCI Card

If you see lots of packet drops in your onload accelerated application even after going the troubleshooting discussion we did over here ,...