How delete the AnnotationHub downloaded datasets
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@00a12689
Last seen 4 weeks ago
Germany

Hi guys!

I was wondering where the datasets downloaded by AnnotationHub are locally saved. I was practicing with different datasets and I realized that there is only 6GB of free space on my drive C. I have two questions:

1. Where the datasets are downloaded and how can I clear those files?
2. How can I change the default path used by AnnotationHub so I could save the downloaded data elsewhere.

I would appreciate it if you could help me with this problem.

AnnotationHub • 199 views
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Mike Smith ★ 5.2k
@mike-smith
Last seen 48 minutes ago
EMBL Heidelberg / de.NBI

You can find the current location of you AnnotationHub cache with hubCache() e.g. for me that's:

ah <- AnnotationHub::AnnotationHub()
AnnotationHub::hubCache(ah)

## [1] "/mnt/data/AnnotationHub"


You can clear the entire cache with removeCache() or individual records with removeResources(). There's a section in the Troubleshoot The Hubs vignette that details how to move an existing cache, so you don't have to download everything again if you already have a lot of resources.

Personally I choose to use a different location by setting the environment variable ANNOTATION_HUB_CACHE=</my/annotationhub/cache/location/>. Exactly how you should do that depends on what operating system you're using. One option is to include it in your ".Rprofile" file.

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Thank you so much Mike. It was a great help. I am using Windows. I couldn't find the ".Rprofile" file. Is there any other way to change the environmental variable by Windows cmd?

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Thinking about it a bit more, this would be better set in the file .Renviron - that's specifically for setting environment variables. I can't remember the location of .Renviron on Windows, but my suggestion would be to install the usethis package with install.packages('usethis') and then run usethis::edit_r_environ(). That should open the appropriate file in an editor for you.

You set the variable with a line like ANNOTATION_HUB_CACHE=</my/annotationhub/cache/location/>

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