How to Create Radar Charts in R?
In this article, we are going to see how to create Radar Charts in R Programming Language.
Radar charts are also known as Spider or Web or Polar charts. It is a graphical graph to display multivariate data in form of 2D charts of three or more quantitative variables which are represented on axes starting from the same point
Dataset in use:
Mumbai Tamil Noida Kerala Patna Assam Ranchi Bhopal Delhi Indore
1 39 39 39 39 39 39 39 39 39 39
2 0 0 0 0 0 0 0 0 0 0
3 2 7 5 5 9 18 7 7 10 19
fmsb package is Several utility functions and it has radarchar() methods to create radar chart in R.
To install the package:
install.packages( fmsb )
Creating a Basic Radar chart in R
Here we will display the basic radar chart using radarchart() methods. For this, we will pass the created dataframe.
Syntax: radarchart(df, cglty, cglcol, cglwd, pcol, plwd)
Parameters:
- df is a dataframe
- pcol attributes is used to change the color of the Polygon line.
- plwd attributes is used to increase or decrease the line width of the Polygon.
- cglcol is used to draw color of the net
- cglwd is for net width
Example: Basic Radar Chart
R
data <- as.data.frame ( matrix ( sample ( 2:20 , 10 , replace=T) , ncol=10)) colnames (data) <- c ( "Mumbai" , "Tamil" , "Noida" , "Kerala" , "Patna" , "Assam" , "Ranchi" , "Bhopal" , "Delhi" , "Indore" ) data <- rbind ( rep (39,10) , rep (0,10) , data) # Library library (fmsb) # The default radar chart radarchart (data) |
Output:
Line Color Customization
pcol attributes are used to change the color of the Polygon line.
Example: Line color customization
R
data <- as.data.frame ( matrix ( sample ( 2:20 , 10 , replace=T) , ncol=10)) colnames (data) <- c ( "Mumbai" , "Tamil" , "Noida" , "Kerala" , "Patna" , "Assam" , "Ranchi" , "Bhopal" , "Delhi" , "Indore" ) data <- rbind ( rep (39,10) , rep (0,10) , data) radarchart (data, pcol = "Green" ) |
Output:
Fill Color into Polygon
pfcol attributes is used to fill the color of the Polygon.
Example: Fill color
R
data <- as.data.frame ( matrix ( sample ( 2:20 , 10 , replace=T) , ncol=10)) colnames (data) <- c ( "Mumbai" , "Tamil" , "Noida" , "Kerala" , "Patna" , "Assam" , "Ranchi" , "Bhopal" , "Delhi" , "Indore" ) data <- rbind ( rep (39,10) , rep (0,10) , data) # Library library (fmsb) radarchart (data, pfcol = "Green" ) |
Output:
Change the line width
plwd attributes is used to increase or decrease the line width of the Polygon.
Example: Change line width
R
data <- as.data.frame ( matrix ( sample ( 2:20 , 10 , replace=T) , ncol=10)) colnames (data) <- c ( "Mumbai" , "Tamil" , "Noida" , "Kerala" , "Patna" , "Assam" , "Ranchi" , "Bhopal" , "Delhi" , "Indore" ) data <- rbind ( rep (39,10) , rep (0,10) , data) # Library library (fmsb) radarchart (data, plwd = 3) |
Output:
Grid Features in radarchart
Following attributes are used for Grids:
- cglcol is used to draw the color of the net
- cglty is for get net line type
- axislabcol is for the color of axis labels
- caxislabels is for the vector of axis labels to display
- cglwd is for net width
Example: Grid features
R
data <- as.data.frame ( matrix ( sample ( 2:20 , 10 , replace=T) , ncol=10)) colnames (data) <- c ( "Mumbai" , "Tamil" , "Noida" , "Kerala" , "Patna" , "Assam" , "Ranchi" , "Bhopal" , "Delhi" , "Indore" ) data <- rbind ( rep (39,10) , rep (0,10) , data) # Library library (fmsb) radarchart (data, cglcol= "Blue" , cglty=10, axislabcol= "grey" , caxislabels= seq (0,20,5), cglwd=0.8) |
Output: