# Problem filtering features from a table **URL:** https://forum.qiime2.org/t/problem-filtering-features-from-a-table/32153 **Category:** User Support **Created:** [December 18, 2024, 9:54am UTC](https://forum.qiime2.org/t/problem-filtering-features-from-a-table/32153 "2024-12-18T09:54:34Z") **Posts on this page:** 1 **Showing post:** 4
### Author: ![salias](https://forum.qiime2.org/user_avatar/forum.qiime2.org/salias/32/18594_2.png) [@salias](https://forum.qiime2.org/u/salias) #### Post date: [December 18, 2024, 3:52pm UTC](https://forum.qiime2.org/t/problem-filtering-features-from-a-table/32153/4 "2024-12-18T15:52:36Z")
> [@k.kujala](#): > > I had two types of Bacteria-taxa that didn't have taxonomy assigned at the phylum level > [@k.kujala](#): > > 'd\_\_Bacteria; **' and 'd\_\_Bacteria;p**' The first one is indeed a feature without phylum level classification (and the command I provided to you removes them). The second one is a feature that is actually classified at the phylum level, but it doesn't have a name. You can read more about this in [this post](https://forum.qiime2.org/t/otu-taxonomic-asssignment/4186). If you also want to get rid of those, one idea that comes to my mind is to use [RESCRIPt](https://forum.qiime2.org/t/processing-filtering-and-evaluating-the-silva-database-and-other-reference-sequence-data-with-rescript/15494) first to edit the taxonomy: ```bash qiime rescript edit-taxonomy \ --i-taxonomy my_taxonomy.qza \ --p-search-strings p__; \ --p-replacement-strings p__ExcludeMe; \ --o-edited-taxonomy my_taxonomy_edited.qza ``` And then exclude them directly with another `qiime taxa filter-table` (this time using `--p-exclude`): ```bash qiime taxa filter-table \ --i-table filtered_table.qza \ --i-taxonomy my_taxonomy_edited.qza \ --p-exclude p__ExcludeMe \ --p-mode contains \ --o-filtered-table double_filtered_table.qza ``` Best, Sergio --- _[View the full topic](https://forum.qiime2.org/t/problem-filtering-features-from-a-table/32153)._