Color-Based Plots for Multivariate Visualization
Draw a matrix of colored rectangles
Apply a color map to numeric data
Draw a colorgram (heatmap) of a matrix
Bonus color palettes
Draw a color-coded triangular matrix of pairwise correlations
Plot a dendrogram with a colorgram underneath
Draw diamonds
Draw a color-coded triangular distance matrix
Bivariate histogram
Add a color key to a plot
Generate a color map from numeric values to colors
Apply a function over z coordinates, binned by their x, y coordinates
Pretty breakpoints
Save a matrix as a raster image file
Visualize a function of z coordinates, binned by x, y coordinates
Draw a color-coded triangular matrix
Extract (x, y, z) coordinates, where z is a matrix
Convert (x, y, zmat) coordinates to (x, y, z) coordinates
Functions for color-based visualization of multivariate data, i.e. colorgrams or heatmaps. Lower-level functions map numeric values to colors, display a matrix as an array of colors, and draw color keys. Higher-level plotting functions generate a bivariate histogram, a dendrogram aligned with a color-coded matrix, a triangular distance matrix, and more.