# where can I find a taxonomy tutorial

**URL:** https://forum.qiime2.org/t/where-can-i-find-a-taxonomy-tutorial/14545
**Category:** User Support
**Created:** [April 18, 2020, 3:11pm UTC](https://forum.qiime2.org/t/where-can-i-find-a-taxonomy-tutorial/14545 "2020-04-18T15:11:40Z")
**Posts on this page:** 1
**Showing post:** 7

<div class="post-metadata">

### Author: ![colinbrislawn](https://forum.qiime2.org/user_avatar/forum.qiime2.org/colinbrislawn/32/6221_2.png) [@colinbrislawn](https://forum.qiime2.org/u/colinbrislawn)
#### Post date: [April 19, 2020, 7:51pm UTC](https://forum.qiime2.org/t/where-can-i-find-a-taxonomy-tutorial/14545/7 "2020-04-19T19:51:33Z")

</div>

> [@SAMRENDRA01](#):
>
> sir, i am working on v3 v4 16s region sequence and when i check the denoising sequence stats its showed me min seq. length 256 and maximum seq. length 433. that means all my ASVs (2194) is in under this sequence range(256-433)?

I think so. If you would like to post the denoising visualization, I can take a look and confirm what the numbers mean.

If you don't have the primers, you can still use a pre-trained classifier. Try the **full length** silva classifers on this page.

> [@SILVA 138 Classifiers](https://forum.qiime2.org/t/silva-138-classifiers/13131):
>
> This pipeline has been vastly improved via the new RESCRIPt plugin. Which you can check out via the link below. We hope the process of constructing your own reference sequence database (e.g. SILVA) will be far less onerous. building_constructionplay_button Click here to see the original documentation

Then follow the tutorials I mentioned above! 😃

> [@SAMRENDRA01](#):
>
> yes i did 3 times but same results came every time. i think i am doing mistake in taxonomic assignment part.

If you post 1) the full command you ran and 2) the full output, I can help you solve this problem!

Colin

---

_[View the full topic](https://forum.qiime2.org/t/where-can-i-find-a-taxonomy-tutorial/14545)._