Various different visualizations, including q2-composition's da-barplot, q2-taxa's barplot, and q2-fmt's feature-peds are parsing feature identifiers as if they have a defined schema to make them more useful in the visualizations. We've had some discussion on this in https://github.com/qiime2/q2-taxa/pull/153 and some improvements to make less assumptions about the schema of identifiers were made in https://github.com/qiime2/q2-composition/pull/122 (aligning composition da-barplot with the approach for taxa barplot). However this is clearly something we need to better support generally.
Originally by @gregcaporaso:
Various different visualizations, including q2-composition's da-barplot, q2-taxa's barplot, and q2-fmt's feature-peds are parsing feature identifiers as if they have a defined schema to make them more useful in the visualizations. We've had some discussion on this in https://github.com/qiime2/q2-taxa/pull/153 and some improvements to make less assumptions about the schema of identifiers were made in https://github.com/qiime2/q2-composition/pull/122 (aligning
composition da-barplot
with the approach fortaxa barplot
). However this is clearly something we need to better support generally.