Summary statistics for gene metadata. a) A subset of the gene metadata data.frame contained in the Giotto object, which consists of the following: number of cells the gene is expressed, percentage of cells that express the gene, total gene expression, average gene expression, and average expression detected. b) A subset of the cell metadata data.frame contained in the Giotto object, which consists of the following: number of genes expressed in each cell, percentage of genes, and total gene expression per cell.