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Recent Comments
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RLangTip
Get an overview of documentation for an installed package: help(package="<package-name>") #rstats
Common style for comments is # on a line of #rstats code, ## within functions, and ### at the top level of scripts. ESS indents accordingly
A single index can be used to select from a matrix. For example, X[row(X)==col(X)] is the same as diag(X) #rstats http://t.co/EY1uMfny
Robust function writing tip: use seq_len(N) instead of 1:N (it handles the N<1 case appropriately): http://t.co/mZdDZCJE #rstats
Train support vector machines in R with the "svm" function from the e1071 package: http://t.co/OM5duD90 #rstats
A handy alias (via @hadleywickham) for #rstats to prevent saving or loading workspaces: R --no-save --no-restore-data --quiet
Filter list elems that match a condition: id<-sapply(mylist, function(e) test(e)); mylist[id] # Replace "test" with any T/F expr #rstats
The # character introduces comments in R. Everything after the # character to end-of-line is ignored by the interpreter. #rstats
The "break" statement immediately exits from a "for" or "while" loop: http://t.co/O4xamQqt #rstats
To debug warnings, options(warn=2) converts warnings into errors #rstats
Tag Archives: No profit
Boinc
Use the idle time on your computer (Windows, Mac, or Linux) to cure diseases, study global warming, discover pulsars, and do many other types of scientific research. It’s safe, secure, and easy with boinc
One laptop for a child
Per maggiori info andare sui siti http://laptop.org/ http://laptopgiving.org/
Linux in the slum
AfrikaSi ha completato la prima fase del suo progetto pilota “Linux in the slum”, iniziativa volta a promuovere l’alfabetizzazione informatica dei giovani che vivono nelle baraccopoli di Nairobi. Questa iniziativa fa parte di un progetto piu’ ampio: Linux Aids People!
Linux Aids People
Nell’ambito delle attività solidali di lotta al sottosviluppo, alla povertà , al disagio, OSES ha avviato il progetto permanente Linux Aids People che mira alla raccolta e riconversione, con soluzioni Open Source, di Personal Computer da destinare ad uso didattico nelle … Continue reading
Calendario 2008 Africa Calendar 2008
Cerchi un calendario di beneficenza da tavolo? Prendi quello di Binario per l’Africa e aiuta la costruzione di una scuola in Kenia