Plotting multivariate data

Multivariate Probability Distributions in R

Surajit Ray

Professor, University of Glasgow

Various plotting options

 

  • Basic R plot
  • lattice library
  • ggplot
  • 3D plotting options
Multivariate Probability Distributions in R

Basic R plot for multivariate data

pairs(iris_raw[, 1:4])

pairs plot

  • Plot not as useful with many variables
Multivariate Probability Distributions in R

Pairs plot by color

pairs(iris_raw[, 1:4], col = iris_raw$Species)

pairs plot by species

Multivariate Probability Distributions in R

Lattice

library(lattice)
splom(~iris_raw[, 1:4], col = iris_raw$Species, pch = 16)

Multivariate Probability Distributions in R

Using ggplot

library(ggplot2)
library(GGally)
ggpairs(data = iris_raw, columns = 1:4, mapping = aes(color = Species))

ggplot

Multivariate Probability Distributions in R

3D plots

library(scatterplot3d)
scatterplot3d(iris_raw[, c(1, 3, 4)], color = as.numeric(iris_raw$Species))

3d

Multivariate Probability Distributions in R

3D plots

scatterplot3d(iris_raw[, c(1, 3, 4)], color = as.numeric(iris_raw$Species),pch = 4, angle = 80)

3dchange

Multivariate Probability Distributions in R

Let's practice some plotting with the wine data!

Multivariate Probability Distributions in R

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