Scaler not scaling all dimensions

[FIrgolitsch]

When using writer.image_write the default "nearest" scaling method only scales the x and y axes (when given zxy axes). Gaussian and Laplacian scale the axes, but as mentioned in Issue #254 other methods than "nearest" aren't working. Is there any way to specify which axes to scale? I tried passing coordinate transforms to the method but that didn't work either.

[will-moore]

Thanks for the feedback.
I'm afraid the non-scaling of Z is due to the fact that historically, many OME and similar tools have considered "big" pyramid images to be a stack of 2D planes, rather than a 3D volume, so the number of Z planes is the same at all resolutions.
E.g. bioformats2raw generates pyramids not downsampled in Z, OMERO API and viewers too, and for OME-NGFF viewing in e.g. vizarr

Some users may want to preserve this behaviour while others will certainly want nD scaling.

There are other scaling issues - I think #254 is the other issue you mentioned, so we need to properly review the scaling API.