Basic R - Loading Data

Here is the steps to loading data into R.

Get Zip data from http://www-stat.stanford.edu/~tibs/ElemStatLearn/ Data -> Zip

• getwd() - to get current directory

• setwd("path") - to set current directory

Load Data

• read.table
• read.csv
  

help(read.table) / ?read.table



setwd("c:\\data")
zipTraining = read.table("zip.train")

summary(zipTraining)
head(a)
dim(zipTraining)
str(zipTraining)



Format data
zipTest<-read.table("zip.test")
zipTraining<-read.table("zip.train")

zipTrainData<-as.matrix(zipTraining[,2:257])
zipTrainLable<-as.factor(zipTraining[,1])

zipTestData<-as.matrix(zipTest[,2:257])
zipTestLable<-as.factor(zipTest[,1])

Learning
zip.lm <- lm(zipTrain~zipLable)