Hello, I ran into an issue using Songbird in Qiime2. Previously I was evaluating features at a single timepoint and now I am evaluating the change in features from baseline to 6 months in the study. The change in features means that I am working with negative values but this doesn't seem to work with songbird. Does it in fact not work with negatives or am I getting an error for a different reason?
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Using qiime2-2020.6 installed with conda
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Used the following command
qiime songbird multinomial
--i-table mm_seqs_noblank_mom_change.qza
--m-metadata-file songbirdData_Av.txt
--p-formula "DII_Mom"
--p-epochs 10000
--p-differential-prior 0.5
--p-summary-interval 1
--o-differentials mm_differentials-aDII_change.qza
--o-regression-stats mm_regression-aDII_change.qza
--o-regression-biplot mm_biplot-aDII_change.qza -
Error message
NumericMetadataColumn does not support positive or negative infinity as a floating point value in column 'loss'.
Thank you!!