Correlation Matrix in R (3 Examples) | Compute & Draw Plot of Variable Relations | cor Function

R code of this video:

x1 ＜- rnorm(1000)
x2 ＜- rnorm(1000) + 0.2 * x1
x3 ＜- runif(1000) + 0.1 * x1 - 0.2 * x2

##### Example 1
cor(data) # Correlation matrix of example data

##### Example 2
library("corrplot")
corrplot(cor(data), method = "circle") # Apply corrplot function

##### Example 3
library("ggcorrplot")
ggcorrplot(cor(data)) # Apply ggcorrplot function

[agsoutas]

First time I learn about this Graph type!! Awesome!!

[AdamHancy]

This is very insightful Joachim, thank you. So if you have a dataset with more than variables you need to perform correlation; you need to specify the variables inside the data name of the df

[deepaliab]

Thank you for such Fantastic and simple to execute the code .

[Devilyte]

Thank you so much man you are fantastic

[panwall]

How would I go about creating a correlation between categorical/dummy variables?

[ruchithruchi]

how can i put coefficient and significance value inside the box

[sandipgarai]

sir, in the example 2 i need bigger plot for 38 variables, how can we use this function for better visualization?

[khaoulazarouale]

how we can compute a correlation matrix in case we have categorical and quantitive variables ?

[sfundomabaso]

What does a negative correlation mean 🤔