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environmentalinformatics-marburg / heavyRain

Download and pre-process (partly) satellite-based CHIRPS and TRMM rainfall data sets in R.
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Issues when using extractCHIRPS with Sys.glob #1

Open h-havenga opened 6 years ago

h-havenga commented 6 years ago

I noticed a weird behaviour when calling Sys.glob in extractCHIRPS. First of all, if I'm correct the package is used in a logical order: getCHIRPS to fetch data remotely as tif > compress it (.gz format) > save it locally, following this extractCHIRPS is called to uncompress it for use in R as needed.

In my case I saved the the data locally directly from the external database, not using getCHIRPS. To uncompress it I did:

gzip -d -k chirps-v2.0.1981.01.01.tif.gz

The file is subsequently named 'chirps-v2.0.1981.01.01.tif'. Following this I call all my newly extracted files via a wild-card using Sys.glob, like here:

tfs <- extractCHIRPS(Sys.glob("./extracted/chirps*"), skip = TRUE)

tfs loads fine, however my 'chirps-v2.0.1981.01.01.tif' is now renamed as 'chirps-v2.0.1981.01.01.' on my local database, calling it again results 'chirps-v2.0.1981.01.' and again 'chirps-v2.0.1981.' and so forth... I THINK it could be possible to change the permissions temporarily to prevent renaming, that seems like overkill. It could be a Sys.glob issue. I quickly searched through Google but didn't see anything that was explicitly similar.

OS: Debian Testing R version 3.4.3