Kickstarting development on R

Having spent last 6months in learning Data Engineering, I decided to check what can I pick next. So, continuing in that quest starting off some work in learning R-

Installing R

R can be installed from Cran website. Just download the installer based on your OS and you should be ready to go-

Once it’s installed, you can create programs in R language and execute in R studio.

Here, Iam loading a dataset in R and then doing some processing over it-

library(datasets) 

head(iris)         
summary(iris)     
plot(iris)        



# Clear all packages
detach("package:datasets", unload = TRUE) 

# Clear all plots
dev.off()  # But only if there IS a plot

To execute a particular line of code, just press Command + Return

Let’s take it line by line now-

library(datasets) — I. R has sample functions alongwith sample data which are stored in a dirctory called ‘library’. When we start R, default packages are loaded, if we want to load a specific package then we need to specify in the library function. Here, we are loading datasets package.

To get a list of packages in R, execute the below command-

library()

To get all packages loaded in R environment-

search()

To get first X rows of a dataset, we use head(<<dataset name>>), by default its 6 rows

summary()- Summarizes the important columns of a dataframe. Important quantiles, min, max,mean, median

plot() — is to plot a dataset -

Happy Learning :)