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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
Monthly Archives: October 2009
Apache CouchDB ~ Ubuntu
“Ubuntu 9.10 Karmic Koala has just been released. This is big news as this version includes Apache CouchDB, used as a replicable database by desktop apps. This means CouchDB will be on over 10 million desktops” [from Damien Katz] Erlang … Continue reading
Calendario 2010 di Binario per l'Africa
E’ disponibile il calendario 2010 di Binario per l’Africa: il tema di quest’anno e’ il dispensario medico
oRestE: a REST interface to your databases with Erlang
oRestE gives you a fast way to expose your database with a restful interface oRestE is built on top of ERLANG (Introduction), MOCHIWEB and WEBMACHINE (webmachine.pdf) oRestE it is light, stable and fast! thanks to ERLANG/OTP and MOCHIWEB
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