Normalizes count data by total sum scaling
For single cell data, a typical normalization factor is 1e5, providing counts per 100k total counts. If a normalization factor is not provided, one is estimated based on: 10^round(log10(mean(column_sums)))
normalize_counts_by_seq_depth(infercnv_obj, normalize_factor = NA)
infercnv_object
total counts to scale the normalization to (default: NA, computed as described above)