SpaOTsc uses optimal transport to 1) project between scRNA-seq data and spatial data, 2) infer spatial cell-cell communications of scRNA-seq data, and 3) identify spatially localized subpopulations.
Cang, Zixuan, and Qing Nie. "Inferring spatial and signaling relationships between cells from single cell transcriptomic data." Nature communications 11.1 (2020): 1-13.
10.1038/s41467-020-15968-5