# "Compute an expression on every row" tool
**URL:** https://help.galaxyproject.org/t/compute-an-expression-on-every-row-tool/1498
**Category:** usegalaxy.org support
**Tags:** transcriptomics, add\_a\_column1, goseq
**Created:** [June 7, 2019, 9:36am UTC](https://help.galaxyproject.org/t/compute-an-expression-on-every-row-tool/1498 "2019-06-07T09:36:40Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Carlijn](https://help.galaxyproject.org/u/Carlijn)
#### Post date: [June 7, 2019, 9:36am UTC](https://help.galaxyproject.org/t/compute-an-expression-on-every-row-tool/1498/1 "2019-06-07T09:36:40Z")
Hi all,
I’m trying to run the goseq tool on my data.
However, to do this the files need to be converted to genes with true/false for differential expression. The help manuel says to do this using the compute an expression on every row tool. However I do not find this in the left row with tools.
How can I access this tool?
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### Author:  [@jennaj](https://help.galaxyproject.org/u/jennaj)
#### Post date: [October 26, 2022, 4:44pm UTC](https://help.galaxyproject.org/t/compute-an-expression-on-every-row-tool/1498/2 "2022-10-26T16:44:42Z")
1 posts were split to a new topic: [Calculate log10 with “Compute an expression on every row”](https://help.galaxyproject.org/t/calculate-log10-with-compute-an-expression-on-every-row/8906)
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### Author:  [@jennaj](https://help.galaxyproject.org/u/jennaj)
#### Post date: [October 26, 2022, 4:51pm UTC](https://help.galaxyproject.org/t/compute-an-expression-on-every-row-tool/1498/3 "2022-10-26T16:51:53Z")
**Resolved** : the tool is found in the `Text Manipulation` tool group at most public Galaxy servers.
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### Author:  [@jennaj](https://help.galaxyproject.org/u/jennaj)
#### Post date: [October 26, 2022, 4:52pm UTC](https://help.galaxyproject.org/t/compute-an-expression-on-every-row-tool/1498/4 "2022-10-26T16:52:00Z")