# How can I access/download large depmap datafiles without losing information?

**URL:** <https://forum.depmap.org/t/how-can-i-access-download-large-depmap-datafiles-without-losing-information/3595>\
**Category:** Q&A\
**Created:** [September 19, 2024, 12:43am UTC](https://forum.depmap.org/t/how-can-i-access-download-large-depmap-datafiles-without-losing-information/3595 "2024-09-19T00:43:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jay\_M](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.depmap.org/jay_m/32/1268_2.png) [@Jay\_M](https://forum.depmap.org/u/Jay_M)\
**Post date:** [September 19, 2024, 12:43am UTC](https://forum.depmap.org/t/how-can-i-access-download-large-depmap-datafiles-without-losing-information/3595/1 "2024-09-19T00:43:48Z")

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Hi all! I was able to download and use the depmap library on R using BioConductor. Im trying to access the OmicsExpressionGenesExpectedCountProfile.csv, but the functions I tried to use don’t work. I also tried downloading the csv onto my laptop, but it lost a lot of the information. Ultimately, trying to perform gene expression differential analysis. Does anyone know how to go about this?

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**Author:** ![simz](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.depmap.org/simz/32/440_2.png) [@simz](https://forum.depmap.org/u/simz)\
**Post date:** [September 19, 2024, 6:42pm UTC](https://forum.depmap.org/t/how-can-i-access-download-large-depmap-datafiles-without-losing-information/3595/2 "2024-09-19T18:42:52Z")

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Hi,

Thanks for reaching out. Could you provide more details on what information was lost? When you downloaded it locally, how were you reading in the file?

Best,  
Simone

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**Author:** ![pmontgom](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.depmap.org/pmontgom/32/4_2.png) [@pmontgom](https://forum.depmap.org/u/pmontgom)\
**Post date:** [October 4, 2024, 1:51pm UTC](https://forum.depmap.org/t/how-can-i-access-download-large-depmap-datafiles-without-losing-information/3595/3 "2024-10-04T13:51:49Z")

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I’ll also interject that the DepMap R package is maintained by Laurent Gatto and Theo Killian of UCLouvain in Belgium, and is not affiliated with the DepMap project. However, Laurent Gatto added a post here for how to report issues with the page:

> [@DepMap bioconductor package](https://forum.depmap.org/t/depmap-bioconductor-package/30/5):
>
> Thank you very much for mentioning the depmap package here. +1:t2 For any questions related to the package, please either use the [Bioconductor support forum](https://support.bioconductor.org/) or open an [issue on Github](https://github.com/UCLouvain-CBIO/depmap/issues).

Thanks,  
Phil