UMAP labeling manipulation

Question

[bioinformatics.girl]

Hey there-- is there a way to decrease the size of UMAP labels (not the key itself, but the actual labels within the UMAP). I've been looking everywhere and can only seem to decrease the size of text within the keys.

Right now, the labels are too big and almost overlap each other on the UMAPs so it looks terrible in terms of aesthetics and resolution.

Thanks!

[Ming Tommy Tang]

the seurat Dimplot function is a wrapper of the ggplot2. You can fetch the UMAP coordinates in the obj@DimReduc$umap and plot yourself with ggrepel https://cran.r-project.org/web/packages/ggrepel/vignettes/ggrepel.html

Answer 1

[Ribo]

When you plot the UMAP using Seurat's DimPlot() function, the label.size argument sets the size of labels within the UMAP.

For example:

DimPlot(seurat_object, reduction = 'umap', group.by = 'ident', label = TRUE, label.size = 4) + NoLegend()

[bioinformatics.girl]

Thank you!