Fig. 2From: Beyond the connoisseurship approach: creating a chronology in Hokusai prints using non-invasive techniques and multivariate data analysisPrincipal component analysis (PCA) for color variables for the full set of prints. Colors in the plot correspond to the various color variables in the print: blue: blue variable; dark green: green variable, red: red variable; purple: paper variable; grey: outline variable; yellow: yellow variable; brown: brown variable; orange: orange variableBack to article page