I was wondering if it is possible to put a title to a `DimPlot()` which is splitted into two by `group.by`.

in my example I am using this command to plot my data 

```
DimPlot(seu.Merged, reduction = "tsne", label = TRUE, group.by=c("orig.ident", "seurat_clusters")) + ggtitle('This is a very long title, which should nbe spread over both plots, grouped by Ident (l) and clusters (r)')
```

But the plot looks like that:

![enter image description here][1]

Is there a way to spread the title over both parts of the plot?

  [1]: https://i.postimg.cc/fLJ9HQmG/Screen-Shot-2020-09-24-at-7-54-05-AM.png
*DimPlot* is calling *patchwork* to bind two plots together, so it is better to use *patchwork* to add title, too, try below:

    myPlot + plot_annotation(title = 'very very long title, very very long title')

See patchwork manuals for more info:

 - [patchwork: Titles, subtitles and captions](https://patchwork.data-imaginist.com/articles/guides/annotation.html#titles-subtitles-and-captions)