Fig. 8
From: A Poisson reduced-rank regression model for association mapping in sequencing data
PRRR identifies directional patterns in spatial gene expression data. We applied PRRR to a Visium spatial gene expression readout from the sagittal anterior region of a mouse brain, using each spot’s spatial coordinates as the covariates and each spot’s gene expression levels as the outcome. Left: Spatial gene expression data for the gene TTR and PRRR’s estimated spatial pattern for this gene. Right: Spatial gene expression data for the gene FABP7 and PRRR’s estimated spatial pattern for this gene