Rough sets in R [closed] - r

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Do you know any R packages implementing rough set based methods? I believe the answer is there are no, but maybe I am missing something subtle.

A quick search with Rseek reveals that there was a talk on this subject presented at the useR! 2004 conference. The abstract mentions an R package, however the package does not appear on CRAN or the authors' personal web pages.
Update: as noted by #ManuParra in the comments below, there is now an R package, RoughSets, implementing algorithms for data analysis using rough set theory.

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Is there any library for K-Nearest-Neighbor Graph construction for large scale data in C++? [closed]

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Closed 8 years ago.
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I am looking for some open source C++ libraries for KNN sparse graph construction for large scale data set. Could you recommend me some libraries, please? Thanks.
Maybe STANN (Simple, Thread-safe Approximate Nearest Neighbor) is what you want.
Here you can find the according paper.
I also found Neighborhood Graph Library, but In did not use it yet.
Checkout https://code.google.com/p/nndes/ and http://www.kgraph.org/ . Both support arbitrary user-defined distance metrics.

Parallel programming using GPU in R [closed]

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Could someone provide an example of using an up-to-date package how one might effectively use the GPU in parallel programming using R? It is nice to know what in theory is possible, but who has a practical example?
Please see the CRAN Task View on High-Performance Computing for an edited list of packages doing just that.

Which tool can be used to generate a diagram of functions executed annotated with execution times? [closed]

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I'm using Drupal and would like to get a graph of functions called annotated with the times the functions took to execute. I found this image which demonstrates what I'm looking for:
However, I can't find a tool that can produce a similar image. What kind of tool am I looking for?
XHProf can generate call graph images similar to this, but not exactly the same. I believe Google searching using keywords PHP call graph or drupal call graph will provide you more information.
You can use XDebug and KCachegrind.

GNU make cheat-sheet [closed]

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I'm learning to work with GNU make and I'm reading the manual (which is very good) but I'm missing a cheat-sheet for quick reference. Is there any good?
Note: It's quite hard to find to google this.
Here is one by Frank Schacherer.
I have made my own. It is definitely not a perfect one but it served me well:
http://martinvseticka.eu/temp/make/presentation.html
http://martinvseticka.eu/temp/make/normal.html
Note: The source for the slides is the official manual.
This might be useful: https://users.cs.duke.edu/~ola/courses/programming/Makefiles/Makefiles.html
I use it occasionally for a quick reference.

Best device for SVG graphics in R? [closed]

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Closed 9 years ago.
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I'd like to export SVG graphics from R. There appear to be two alternatives: RSvgDevice and Cairo. Can anyone comment on these packages? Is either the default, or clearly better than the other?
Many thanks,
I can't comment definitively other than to say that I use Cairo all the time to create high-quality images, and have had great experience with it. It can target many different output formats beyond SVG.
As far as I know, there are other packages you could try: gridSVG, SVGAnnotation and RSVGTipsDevice. You will find lots of examples and different discussions of these approaches in some slides by Paul Murrel (author of gridSVG) and in a paper by the authors of SVGAnnotation.

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