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(Mayr) returned 5 hits

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1
1874 Two-variable color map
Author: Georg von Mayr (1841-1925)
Two-variable color map (showing the joint distribution of horses (red, vertical bars) and cattle (green, horizontal bars) in Bavaria, widths of bars $sim$ animals/km$^2$)
Category: Statistics & Graphics
2
1877 Proportional square
Author: Georg von Mayr (1841-1925)
First use of proportional, divided square in the modern (mosaic) form for data representation
Category: Statistics & Graphics
3
1877 Star plot
Author: Georg von Mayr (1841-1925)
First use of polar diagrams and star plots for data representation
Category: Statistics & Graphics
4
1971 Star plot
Authors: Herman P. Friedman (c. 1930-2010) & R. M. Goldwyn (1936-1994) & J. H. Siegel
Irregular polygon ("star plot'') to represent multivariate data (with vertices at equally spaced intervals, distance from center proportional to the value of a variable) [but see Georg von Mayr in 1877 cite[S. 78]{vonMayr:1877} for first use]
Category: Statistics & Graphics
5
1974 Bivariate matrix
Author: U.S. Bureau of the Census (1903-)
Color-coded bivariate matrix to represent two intervally measured variables in a single map (Urban Atlas series)[but see Georg von Mayr in 1874 cite[Fig. XIX]{vonMayr:1874} for first use]
Category: Statistics & Graphics