Multiscales datatype(s)

[tischi]

@joshmoore Is there anything in the spec about the datatypes of the multiscales as in whether they can be all completely different or not?

For example: is this OK?

scale 0: double
scale 1: int16
scale 2: uint8
scale 3: float

cc @constantinpape @axtimwalde

[imagesc-bot]

This issue has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/towards-opening-ome-zarr-hcs-in-fiji/87971/12

[constantinpape]

It should be in the spec, there have been issues and one PR, but not yet merged (due to lack of time for me to answer the comments). This should be continued, I currently don't have the capacity to drive this forward (unless someone points out very specific edit requests). See:

• Constrain dtypes & shape for multiscale arrays #2
• Scale array MUST have the same dtype #153
• Require same datatype for all arrays in multiscales:datasets #154

[will-moore]

The ome-ngff-validator warns of mis-matching dtypes for v0.1-v0.4 and for later versions it will flag mis-matching dtypes as "fail": See ome/ome-ngff-validator#18 (comment)

[tischi]

OK, great! It would be good to also merge this as written text into the spec to avoid confusion.