How to disable the display of some correlations using corrplot in R?

When we create a correlation plot using corrplot the correlation among variables is displayed on the plot, if we want to disable some of those correlations then we first need to set them to NA in the correlation matrix and then use the corrplot function with na.label set to blank as " ".

Check out the below given example to understand how it works.

Example

Following snippet creates a sample data frame −

x<-rpois(20,5)
y<-rpois(20,1)
z<-rpois(20,2)
a<-rpois(20,5)
b<-rpois(20,2)
df<-data.frame(x,y,z,a,b)
df

Output

The following dataframe is created −

   x  y  z a  b
1  7  1  3 8  2
2  6  0  2 9  1
3  7  3  0 4  4
4  3  1  3 5  4
5  3  1  0 6  5
6  4  0  4 3  0
7  3  3  5 3  3
8  8  1  0 1  1
9  8  1  2 7  0
10 6  4  3 5  4
11 4  0  5 5  4
12 1  0  5 4  1
13 6  2  0 7  2
14 5  2  5 5  0
15 3  0  1 3  1
16 5  0  1 2  1
17 4  1  2 5  2
18 3  1  2 6  1
19 6  0  5 5  2
20 5  1  1 7  3

To create correlation matrix for data in df, add the following code to the above snippet −

x<-rpois(20,5)
y<-rpois(20,1)
z<-rpois(20,2)
a<-rpois(20,5)
b<-rpois(20,2)
df<-data.frame(x,y,z,a,b)
Corr_M<-cor(df)
Corr_M

Output

If you execute all the above given snippets as a single program, it generates the following output −

      x            y             z            a           b
x   1.0000000   0.24491966  -0.34910183   0.19145954  -0.1414168
y   0.2449197   1.00000000  -0.09383816   0.00000000   0.4081691
z  -0.3491018  -0.09383816   1.00000000  -0.04151439  -0.1358051
a   0.1914595   0.00000000  -0.04151439   1.00000000   0.1013302
b  -0.1414168   0.40816908  -0.13580512   0.10133025   1.0000000

To load corrplot package and create corrplot of correlation matrix Corr_M, add the following code to the above snippet −

library(corrplot)
corrplot(Corr_M)

Output

If you execute all the above given snippets as a single program, it generates the following output −

To set the first column of Corr_M to NA, add the following code to the above snippet −

Corr_M[,1]<-NA
Corr_M

Output

If you execute all the above given snippets as a single program, it generates the following output −

    x     y             z           a             b
x  NA   0.24491966  -0.34910183   0.19145954  -0.1414168
y  NA   1.00000000  -0.09383816   0.00000000   0.4081691
z  NA  -0.09383816   1.00000000  -0.04151439  -0.1358051
a  NA   0.00000000  -0.04151439   1.00000000   0.1013302
b  NA   0.40816908  -0.13580512   0.10133025   1.0000000

To create corrplot of Corr_M again to visualize the correlation plot without first column, add the following code to the above snippet −

corrplot(Corr_M,na.label=" ")

Output

If you execute all the above given snippets as a single program, it generates the following output −

Nizamuddin Siddiqui

Updated on 06-Nov-2021 06:38:11

• Related Questions & Answers
• How to plot matrix elements using corrplot in R?
• How to change the color code of corrplot in R?
• How to remove question mark from corrplot in R?
• How to change the size of correlation coefficient value in correlation matrix plot using corrplot in R?
• How to disable the interactivity of canvas using FabricJS?
• How to disable the selectability of Circle using FabricJS?
• How to convert the correlation matrix into a data frame with combination of variables and their correlations in R?
• How to disable the centered rotation of Ellipse using FabricJS?
• How to disable the centered scaling of Ellipse using FabricJS?
• How to disable the centered scaling of Circle using FabricJS?
• How to display the curve on the histogram using ggplot2 in R?
• How to disable the credssp authentication using PowerShell?
• How to disable the centered rotation of a Circle using FabricJS?
• How to display some columns (not all) in MySQL?
• How to disable resizable property of textarea using JavaScript?