# Kraken: how do I get a Kmer distribution?

**URL:** <https://help.galaxyproject.org/t/kraken-how-do-i-get-a-kmer-distribution/7018>\
**Category:** usegalaxy.eu support\
**Tags:** reference-index\
**Created:** [November 10, 2021, 9:37pm UTC](https://help.galaxyproject.org/t/kraken-how-do-i-get-a-kmer-distribution/7018 "2021-11-10T21:37:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![fullmooninu](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/fullmooninu/32/2923_2.png) [@fullmooninu](https://help.galaxyproject.org/u/fullmooninu)\
**Post date:** [November 10, 2021, 9:37pm UTC](https://help.galaxyproject.org/t/kraken-how-do-i-get-a-kmer-distribution/7018/1 "2021-11-10T21:37:34Z")

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As you can see in the image, the Kmer distribution field is empty: **“No options available”**

What am I missing?

Is there another tool I must use first to generate a Kmer distribution?

[![](https://i.stack.imgur.com/u7RpL.png) ](https://i.stack.imgur.com/u7RpL.png)

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**Author:** ![jennaj](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/jennaj/32/27_2.png) [@jennaj](https://help.galaxyproject.org/u/jennaj)\
**Post date:** [November 10, 2021, 10:05pm UTC](https://help.galaxyproject.org/t/kraken-how-do-i-get-a-kmer-distribution/7018/2 "2021-11-10T22:05:39Z")

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Hi @fullmooninu

There are two versions of the tool: `KrakEN` and `KrakEN2".

The admins of the EU server would need to create/provide the built-in index for `KraKEN`.

This older version of the `KrakEN` tool suite is available at [usegalaxy.org](http://usegalaxy.org) and [usegalaxy.org.au](http://usegalaxy.org.au) – and it has a Kmer indexed at both.

BTW – it looks as if you are searching the tool panel with a typo. Try “kraken” instead of “braken” to find all tools in the suite. Or, with “kraken2”. The two versions are incompatible as far as I know, with distinct indexes.

Tutorials: [Search Tutorials](https://training.galaxyproject.org/training-material/search?query=kraken)

ping @gallardoalba @wm75

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**Author:** ![bjoern.gruening](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/bjoern.gruening/32/10_2.png) [@bjoern.gruening](https://help.galaxyproject.org/u/bjoern.gruening)\
**Post date:** [November 17, 2021, 7:03pm UTC](https://help.galaxyproject.org/t/kraken-how-do-i-get-a-kmer-distribution/7018/3 "2021-11-17T19:03:47Z")

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I installed the DBs, please check tomorrow again. Thanks!

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**Author:** ![jennaj](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/jennaj/32/27_2.png) [@jennaj](https://help.galaxyproject.org/u/jennaj)\
**Post date:** [September 23, 2022, 9:55pm UTC](https://help.galaxyproject.org/t/kraken-how-do-i-get-a-kmer-distribution/7018/4 "2022-09-23T21:55:24Z")

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