Here are a couple things to consider:
- It looks as though you’re using
qiime diversity beta to create a bray curtis distance matrix that you already have. (See the outputs from
qiime diversity core-metrics-phylogenetic)
- The error message you are getting, “result couldn’t be viewed as QIIME 2 metadata”, is telling you that distance matrices cannot be viewed as metadata. You could probably
bray_curtis_pcoa_results.qza (also produced by
core-metrics), but I’m not sure that’s what you’re going for.
What is your goal in trying to tabulate your distance matrix? Have you considered using downstream tools like
qiime emperor plot to visualize your beta diversity data? The moving pictures tutorial gives a high-level look at some things you can do downstream of
core-metrics, if you haven’t checked that out yet.