I have installed/updated to the latest qiime version qiime2-2019.10. I want to generate results from other indices like Chao1 and Simpson. I used the following information obtained from this link: [image] Alpha and Beta Diversity Explanations and Commands Tutorials …

Hi Sree, The command you're running is typically used for faith_pd. Simpson does not require a phylogenetic tree. Instead, try running: qiime diversity alpha --i-table table.qza --p-metric simpson --o-alpha-diversity simpson-10-12-2019.qza Best, Stephanie

Dear Stephanieorch, Thank you very much for the information. This solved my problem. Regards Sree

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When used other alpha diversity indices showing error in qiime2-2019.10

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