varbin.plot {varbin} | R Documentation |
Generate simple plot to visualize binning results
varbin.plot(ivTable)
ivTable |
Output from either varbin, varbin.factor, varbin.monotonic or varbin.kink. |
The command varbin.plot generates a simple plot with the Weight of Evidence values on the y-axis and the cutpoints/binnings on the x-axis. Gives a nice overview of the functional form and the relatioship between the explanatory variable and the dependent variable.
# Set seed and generate data set.seed(1337) target <- as.numeric(runif(10000, 0, 1)<0.2) age <- round(rnorm(10000, 40, 15), 0) age[age<20] <- round(rnorm(sum(age<20), 40, 5), 0) age[age>95] <- round(rnorm(sum(age>95), 40, 5), 0) inc <- round(rnorm(10000, 100000, 10000), 0) educ <- sample(c("MSC", "BSC", "SELF", "PHD", "OTHER"), 10000, replace=TRUE) df <- data.frame(target=target, age=age, inc=inc, educ=educ) # Perform restricted binning result <- varbin.kink(df, "inc", "target") # Plot result varbin.plot(result)