Radarchart Using fmsb in R

Question

I was trying to make a radarchart using fmsb but I'm having some trouble with my script.

If anyone can help I will be really appreciated.

my radarchart sequence must be between (0,2) and by 0.2. But when I try it the graph it is out of bounds. my script:

library("fmsb")

data:

df <- data.frame("hours" = 0:23, 
  "max_value" = 2,"min_value" = 0,"CallsProportion" = (c(1.583333333
,1.291666667,1.166666667,1,0.041666667,0.833333333,0.625
,0.791666667,0.75,0.458333333,0.833333333,0.625,0.708333333,0.458333333,0.291666667,0.416666667,0.625,0.458333333,1.208333333,2.375,2.166666667,2.208333333,1.625,1.541666667)))

radarchart(df, axistype = 1,
       caxislabels = seq(0,2,0.2), 
       cglcol = "grey",
       vlcex = 0.8, cglty = 1, 
       cglwd = 0.5,axislabcol = "grey", 
       pcol = "black",plwd = 1.8, plty = 1)

Answer 1

This is a data format problem. Function fmsb::radarchart needs an object of class "data.frame" as first argument, a "matrix" won't do it. From help("radarchart") :

The data frame to be used to draw radarchart . If maxmin is TRUE , this must include maximum values as row 1 and minimum values as row 2 for each variables, and actual data should be given as row 3 and lower rows. The number of columns (variables) must be more than 2.

Note that maxmin = TRUE is the default setting.

So follow these steps.

1. Get the range of values, their minimum and maximum.
2. Create a matrix with 2 rows and as many columns as columns in the original data frame.
3. Bind the matrix with the data rows.
4. Set the column names to the first column of df , column hours .

In this case there is just one vector to plot, vector CallsProportion .

r <- range(df$CallsProportion)
m <- matrix(r[2:1], nrow = 2, ncol = nrow(df))
df2 <- rbind.data.frame(m, df$CallsProportion)
names(df2) <- df$hours

radarchart(df2, axistype = 1,
           caxislabels = seq(0, 2, 0.2), 
           cglcol = "grey",
           vlcex = 0.8, cglty = 1, 
           cglwd = 0.5, axislabcol = "grey", 
           pcol = "black", plwd = 1.8, plty = 1)