Cannot find sprng 2.0 header file

Trying to
install.packages("rsprng")
fails because
Cannot find sprng 2.0 header file.

The development package of the SPRNG (Scalable Parallel Random Number Generator) library which provides several RNGs that are suitable for use in parallel computing are missing:

sudo aptitude install libsprng2-dev

fixes it.

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Install R Package XML with Ubuntu amd64

install.packages("XML")

failed while complaining

Cannot find xml2-config

Seth Falcon pointed out library libxml2-dev – Development files for the GNOME XML library – where missing.

sudo aptitude install libxml2-dev

fixed the problem.

Install R packages without internet connection

You might have no internet connection or as in my case you have one, but the firewall prevents anything beside Windows IE to access the net. Grrr.

Ok. It takes more time, but is possible. Lets have an example:
Installing the package ‘gam’ for R-2.9 on Windows being in Norway (with cran.ii.uib.no as the nearest and fastest “Comprehensive R Archive Network”.

1. Find another place with internet connection or as in my case, the browser works, so use the browser.
2. Find the package on the repository corresponding to your operating system and your version of R in our above example here
3. klick on the link gam_1.0.zip, download it and save it (e.g. using an USB disk). Remember the path to the file (in our example in the folder H:/DATA/).
4. Open R and write install.packages("H:/DATA/gam_1.0.zip", repos=NULL) at the command line.

Thats it.