It's useful in flow cytometry as a step towards labelling cells. Similarly, in SNPchip-based genetics it was a step towards assigning genotype labels to fluorescence intensities.
Those are settings with "real" clusters, as opposed to "shoe size clustering" for market segmentation (also useful!)

Hey 🧪 🧬 genomicsky, what’s the best way to get a .012 snpchip file to a format plink will accept? I don’t really want to go the hacks way to a vcf or a .ped file?

#GrassResearch
10K liquid-phase SNP array developed for elephant grass genetic diversity analysis.
Details: https://maxapress.com/article/doi/10.48130/grares-0026-0012
#ForageBreeding #SNPChip

#TropicalPlants
Developed HbGBTS80K liquid SNP chip for rubber tree. Distinguishes accessions, detects key gene. Aids breeding & studies.
Details: https://maxapress.com/article/doi/10.48130/tp-0024-0020
#SNPChip #RubberTree

There was a brief flurry of papers about high-density linkage disequilibrium maps (using SNPchip data), showing linkage spines and haplotype blocks.

I got caught up in haplotype blocks, sub-blocks, holes, and intersecting blocks, and experimented with subsampling to make patterns more obvious.