# Distance Metrics for Image Color Similarity

## Documentation for package ‘colordistance’ version 1.1.2

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

chisqDistance | Chi-square distance between vectors
colorDistance | Sum of Euclidean distances between color clusters
combineClusters | Average 3D color histograms by subdirectory
combineList | Combine a list of cluster features into a single cluster set
convertColorSpace | Convert between color spaces
EMDistance | Earth mover's distance between two sets of color clusters
exportTree | Export a distance matrix as a tree object
extractClusters | Extract cluster values and sizes from kmeans fit objects
getColorDistanceMatrix | Distance matrix for a list of color cluster sets
getHistColors | Vector of hex colors for histogram bin coloration
getHistList | Generate a list of cluster sets for multiple images
getImageHist | Generate a 3D histogram based on color distribution in an image
getImagePaths | Fetch paths to all valid images in a given directory
getKMeanColors | Fit pixels to clusters using KMeans clustering
getKMeansList | Get KMeans clusters for every image in a set
getLabHist | Generate a 3D histogram based on CIE Lab color coordinates in an image
getLabHistList | Generate a list of cluster sets in CIE Lab color space
heatmapColorDistance | Plot a heatmap of a distance matrix
imageClusterPipeline | Generate and plot a color distance matrix from a set of images
loadImage | Import image and generate filtered 2D pixel array(s)
normalizeRGB | Normalize pixel RGB ratios
orderClusters | Order color clusters to minimize overall color distance between pairs
pause | Pause and wait for user input
plotClusters | Plot clusters in 3D color space
plotClustersMulti | Plot several different cluster sets together
plotHist | Color histogram of binned image
plotImage | Display an image in a plot window
plotPixels | Plot pixels in color space
removeBackground | Remove background pixels in image
scatter3dclusters | Plot 3D clusters in a 2D plot
weightedPairsDistance | Distance between color clusters with user-specified color/size weights