# DDA data processing

**URL:** <https://community.france-bioinformatique.fr/t/dda-data-processing/2356>\
**Category:** Workflow4Metabolomics\
**Created:** [Août 18, 2022, 4:21 UTC](https://community.france-bioinformatique.fr/t/dda-data-processing/2356 "2022-08-18T16:21:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lmervant](https://community.france-bioinformatique.fr/letter_avatar_proxy/v4/letter/l/a587f6/32.png) [@lmervant](https://community.france-bioinformatique.fr/u/lmervant)\
**Post date:** [Août 18, 2022, 4:21 UTC](https://community.france-bioinformatique.fr/t/dda-data-processing/2356/1 "2022-08-18T16:21:02Z")

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Hi support,  
I have a question regarding processing DDA data. Once I perform findChromPeaks the MSMS part of my data disappear (which do not happen when I do the same thing in R). Is there any way to keep this information throughout the all workflow?

Thanks!

Loic Mervant

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**Author:** ![yguitton](https://community.france-bioinformatique.fr/user_avatar/community.france-bioinformatique.fr/yguitton/32/270_2.png) [@yguitton](https://community.france-bioinformatique.fr/u/yguitton)\
**Post date:** [Août 20, 2022, 7:34 UTC](https://community.france-bioinformatique.fr/t/dda-data-processing/2356/2 "2022-08-20T19:34:54Z")

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Hi

You can keep your MSMS if you use msPurity workflow available on W4M.

1- do your usual xcms workflow (Including you DDA files)  
2- launch MSMS analysis with mspurity tools  
3- merge xcms output and mspurity ones with frag4features

Un exemple [Galaxy | France | Published Workflow | Workflow XCMS\_CAMERA\_msPurity](https://usegalaxy.fr/u/yguitton44/w/workflow-xcmscameramspurity)

Yann

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**Author:** ![lmervant](https://community.france-bioinformatique.fr/letter_avatar_proxy/v4/letter/l/a587f6/32.png) [@lmervant](https://community.france-bioinformatique.fr/u/lmervant)\
**Post date:** [Août 31, 2022, 8:31 UTC](https://community.france-bioinformatique.fr/t/dda-data-processing/2356/3 "2022-08-31T08:31:30Z")

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Thanks Yann!