“Yu laid out the lands:” georeferencing the Chinese Yujitu [Map of the Tracks of Yu] of 1136

Abstract

In an historically contextualized overview of the earliest extant version of the Yujitu, engraved on stone under the Liu Yu regime but believed to be a copy of a Northern Song map, the paper analyzes factors that complicate its georeferencing. The paper introduces a new algorithm for nonlinear georeferencing, applying it to 45 points and finding that the placement of sites on the north-south axis must have been based on latitudinal observation. Despite the Yujitu's startlingly modern appearance, the paper finds that there are areas in which it reflects a loyalty to classical texts.

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