#Install required packages
#install.packages("tidyverse")
#install.packages("reshape2")

#Load and review dataset
data(mtcars)
head(mtcars)
##                    mpg cyl disp  hp drat    wt  qsec vs am gear carb
## Mazda RX4         21.0   6  160 110 3.90 2.620 16.46  0  1    4    4
## Mazda RX4 Wag     21.0   6  160 110 3.90 2.875 17.02  0  1    4    4
## Datsun 710        22.8   4  108  93 3.85 2.320 18.61  1  1    4    1
## Hornet 4 Drive    21.4   6  258 110 3.08 3.215 19.44  1  0    3    1
## Hornet Sportabout 18.7   8  360 175 3.15 3.440 17.02  0  0    3    2
## Valiant           18.1   6  225 105 2.76 3.460 20.22  1  0    3    1
#Load required libraries
library(ggplot2)
library(reshape2)

#Pepare and review correlation matrix
corr = melt(cor(mtcars))
head(corr)
##   Var1 Var2      value
## 1  mpg  mpg  1.0000000
## 2  cyl  mpg -0.8521620
## 3 disp  mpg -0.8475514
## 4   hp  mpg -0.7761684
## 5 drat  mpg  0.6811719
## 6   wt  mpg -0.8676594
#Create the correlation plot
qplot(x = Var1, y = Var2, data = corr, fill = value, geom = "tile")