Video 1. Creation of a simple organ-centric coordinate system and its application on cellular data.

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Starting with two time points of an Arabidopsis sepal that have been lineage traced, the principal directions of growth are computed. Next, cells at the base of the sepal are selected to create a distance field that is used as a simple coordinate system. The growth (areal extension) can then be computed along the directions defined along the organ-centric coordinate system. The organ coordinates can also be exported and used to plot different kinds of cellular data.