How to make battleship curves

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“Fig. 16.9. Seriation diagrams were once constructed by hand (literally). Frequencies of temporal types were converted to percentages, then drawn on individual strips, which were then moved up or down until they approximated a series of battleship-shaped curves (Ford, 1962: fig.8). This tedious and subjective procedure has since been replaced by computer programs.”

David Hurst Thomas 1988, Addressing Variability in the Pooled Radiocarbon Record of St. Catherines Island, in ANTHROPOLOGICAL PAPERS AMERICAN MUSEUMOF NATURAL HISTORY NO. 88

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