This looks good, thanks.

One question - why is arrow needed in Imports: in DESCRIPTION? It's ok if it is needed, but I wanted to check that I understand.

And thanks also for designing the sticker for this package - this one also looks really nice.

Hi Lukas,

arrow is needed by VisiumIO, and since we demonstrate Visium HD in the vignette, we will need VisiumIO to read it from OSTA.data.

Ok thanks, that sounds good. In this case I'll move arrow to Suggests: instead of Imports:. We can use Suggests: for any packages that are only used in the vignette or examples.

The updates look great - thank you for this PR. I'll update DESCRIPTION and add a few additional minor formatting edits, and then will merge.