twotorials by anthony damico

a two-minute introduction to statistical programming and other short stories

2012-11-07T09:30:00.000-05:00

some hacker news criticism convinced me to take a stab at the question: "what is R?"

answer: the lingua statistica, s'il vous plaît.

met my hero and the inspiration behind this website.

bonus video: how to make coffee with r in two minutes.

ninety two-minute r tutorial videos

2012-05-06T23:00:00.000-04:00

ninety two-minute r tutorial videos now posted. three hours of ultra-concentrated r.

new videos include topics like:

setting your preferences (options) (Rprofile.site)
random number generation (runif) (rnorm) (set.seed) (rbinom)
creating and accessing objects according to a pattern (assign) (get)
loops and flow control (nested for) (while) (next and break)

new category: fun ones

sixty two-minute r twotorials now available

2012-04-12T13:00:00.000-04:00

sixty twotorials now posted. two minutes each.

new video highlights:

purpose.of.twotorials.com <-
ifelse(
    you are not yet fluent in the r language ,
    help you learn more ,
    provide quicklinks to answer colleagues' r questions )

here's a video that no one who has ever seriously used r would need - but might find useful to send along with syntax that a newbie needs to run for some reason:

041 did someone send you a script file or computer code for the r programming language? here's how to run it!

i appreciate your feedback. if you have an idea for a twotorial, i'd love to hear it. i'd also be excited about guest twotorials.

how to use the ifelse function in r

2012-04-02T20:30:00.000-04:00

how to access different records within a data frame by using logical tests in r

2012-04-02T20:00:00.000-04:00

help resources for r: the r-help mailing list, ucla academic technology services, and r-bloggers

2012-03-26T20:30:00.000-04:00

how to use coercion and convert numbers to characters to logicals in r

2012-03-26T20:00:00.000-04:00

how to work with character strings in r

2012-03-19T20:30:00.001-04:00

how to add comments, save a script file, and make your work reproducible in r

2012-03-19T20:30:00.000-04:00

click here to read more about reproducible research

how to read an excel file (dot xls and dot xlsx) into a data frame with r

2012-03-12T20:30:00.000-04:00

how to read spss, stata, and sas files into r

2012-03-12T20:00:00.000-04:00

how to build a for loop in r

2012-03-05T20:30:00.000-05:00

how to create a logical test and then build an if statement in r

2012-03-05T20:00:00.000-05:00

how to read csv files into r

2012-02-27T20:30:00.000-05:00

how to use a function and read the help files in r

2012-02-27T20:00:00.000-05:00

how to install and load a package in r

2012-02-20T20:30:00.000-05:00

how to work with data tables in r

2012-02-20T20:00:00.000-05:00

what does object oriented statistical programming really mean?

2012-02-13T20:30:00.000-05:00

how to use the c (combine) function

2012-02-13T20:00:00.000-05:00

how to create a variable with r

2012-02-06T20:30:00.000-05:00

how to do simple arithmetic in r

2012-02-06T20:00:00.000-05:00

simple shortcuts for the windows r console

2012-01-30T20:30:00.000-05:00

how to download and install r

2012-01-30T20:00:00.000-05:00