DimPlot(dim_example, group_by = "clusters", velocity = c("stochasticbasis_1", "stochasticbasis_2"),
pt_alpha = 0)
Error in vapply(glyph, get_attr, which = "width", default = 0, numeric(1)) :
values must be length 1,
but FUN(X[[1]]) result is length 200