# Create OTU table from biom

**URL:** https://forum.qiime2.org/t/create-otu-table-from-biom/17995
**Category:** Other Bioinformatics Tools
**Created:** [January 8, 2021, 10:23am UTC](https://forum.qiime2.org/t/create-otu-table-from-biom/17995 "2021-01-08T10:23:01Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![mohsen\_ej](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/m/b38774/32.png) [@mohsen\_ej](https://forum.qiime2.org/u/mohsen_ej)
#### Post date: [January 8, 2021, 9:00pm UTC](https://forum.qiime2.org/t/create-otu-table-from-biom/17995/2 "2021-01-08T21:00:02Z")

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I used this [tutorial](https://forum.qiime2.org/t/how-to-make-classic-otu-table-with-qiime2/3612/3) but I didn't understand what is level in this command:  
qiime taxa collapse   
--i-table table.qza   
--i-taxonomy taxonomy.qza   
--p-level 6 \ # or whatever level of taxonomy you want  
--output-dir taxtable/  
also after I did all the steps I got a file with just 37 rows while in table.qza or taxonomy.qza file there are more than 100 rows.  
sorry if I am asking a simple question.  
thank you

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