weka How to use R in Weka Plotting inside R Console

Example

The following Codes can be found from Weka course

Given iris.arff is loaded in weka, inside Weka Explorer's R console or Weka KnowledgeFlow's R Scripting, you can play with the following codes to make beautiful plots:

library(ggplot2)

ggplot(rdata, aes(x = petallength)) + geom_density()

ggplot(rdata, aes(x = petallength)) + geom_density() + xlim(0,8)

ggplot(rdata, aes(x = petallength)) + geom_density(adjust = 0.5) + xlim(0,8)

ggplot(rdata, aes(x = petallength, color = class)) + geom_density(adjust = 0.5) + xlim(0,8)

ggplot(rdata, aes(x = petallength, color = class, fill = class)) + geom_density(adjust = 0.5) + xlim(0,8)

ggplot(rdata, aes(x = petallength, color = class, fill = class)) + geom_density(adjust = 0.5, alpha = 0.5) + xlim(0,8)





library(reshape2)
ndata = melt(rdata)
ndata

ggplot(ndata, aes(x = value, color = class, fill = class)) + geom_density(adjust = 0.5, alpha = 0.5) + xlim(0,8) + facet_grid(variable ~ .)

ggplot(ndata, aes(x = value, color = class, fill = class)) + geom_density(adjust = 0.5, alpha = 0.5) + xlim(0,8) + facet_grid(. ~ variable)

ggplot(ndata, aes(y = value, x = class, colour = class)) + geom_boxplot() + facet_grid(. ~ variable)