Created
December 11, 2012 04:34
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Clustering breakfast foods
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doInstall <- TRUE | |
toInstall <- c("ggplot2", "cluster", "MASS", "smacof") | |
if(doInstall){install.packages(toInstall, repos = "http://cran.us.r-project.org")} | |
lapply(toInstall, library, character.only = TRUE) | |
# Generate a matrix of dissimilarities from pairwise correlations | |
data(breakfast) # Preference orderings of breakfast items, from smacof | |
corrMat <- cor(breakfast, use = "pair") | |
distMat <- dist(corrMat) | |
# Fuzzy analysis clustering of breakfast items | |
FANNY <- fanny(distMat, k = 3, maxit = 2000) | |
FANNY$membership | |
MDS <- smacofSym(distMat)$conf | |
plot(MDS, type = "n") | |
text(MDS, label = rownames(MDS), col = rgb((FANNY$membership)^(1/1))) | |
# From http://stackoverflow.com/a/7661309/479554 | |
labelFrame <- data.frame(X = MDS[, 1], Y = MDS[, 2], Label = rownames(MDS)) | |
labelFrame <- transform(labelFrame, | |
w = strwidth(rownames(MDS))*1, | |
h = strheight(rownames(MDS))*1.5) | |
labelFrame$Color <- rgb((FANNY$membership)^(1/1)) | |
zp1 <- ggplot(data = labelFrame, | |
aes(x = X, y = Y)) | |
zp1 <- zp1 + geom_rect(aes(xmin = X - w/2, xmax = X + w/2, | |
ymin = Y - h/2, ymax = Y + h/2, | |
fill = Color), alpha = 2/3) | |
zp1 <- zp1 + geom_text(aes(x = X, y = Y, label = Label), | |
size = 3, colour = "WHITE") | |
zp1 <- zp1 + scale_fill_identity() | |
zp1 <- zp1 + theme_classic() | |
print(zp1) |
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Thank you @dsparks for the code :)
what do you think I should do in this case please :
https://stackoverflow.com/questions/53796378/fuzzy-clustering-in-r-applied-to-products-data
Should I create a matrix of correlation as you did ?
Thank you for your answer