Error: Expected dataset to have numeric type

[kdheepak]

Describe the bug

When using the signal attribute on a group, I get a Expected data to be numeric error message. This seems to work for other HDF5 files though.

In the screenshots below, the left hand side is the h5web interface for chopper.nxs and the right hand side is the file that we are trying to create with the signal attribute on one of the groups:

So I don't believe this is a bug necessarily. I think this is us incorrectly setting some attribute?

To Reproduce

1. Download this file

output-testing.zip

2. Open this file in h5web.
3. Click on nexus_entry/nx_data

Expected behaviour

We expect the plot to be seen because the signal attribute points to Dmd2

Screenshots

The plot shows up as expected when using nexus_entry/nx_data/Dmd2

but does not work when clicking on the nexus_entry/nx_data group

Context

• OS: Windows
• Browser: VSCode

[loichuder]

Hello @kdheepak

First, let me apologize, you are clearly ahead of us on #1441 since you now have a correctly structured NeXus file while we didn't make the relevant changes in H5Web 😅

In this case, it comes from the axes datasets that store string rather than numerical values (the signal and your NeXus structure is fine).

We don't support yet axes containing strings . For that, we need to do the changes mentioned in #1441 (comment) so that

The axes would still show indices, but the tooltip would display the real axis value

Thanks for the report, that will motivate us to keep working on that 😉

[loichuder]

Just to be crystal clear: further progress on this will be tracked at #1441