This is R. There is no if. Only how.
Simon 'Yoda' Blomberg, R-help (April 2005)
Observação: Os materials são disponibilizados livremente – se usar, CITE A FONTE !!!
Vale ainda lembrar: se usar o R em publicações não deixe de citar. Para ver como citar o programa R basta digitar citation() na linha de comando e voce vai obter como (digite na sua máquina para ter as verões que voce usou):
> citation()
To cite R in publications use:
R Core Team (2026). _R: A Language and Environment for Statistical
Computing_. R Foundation for Statistical Computing, Vienna, Austria.
doi:10.32614/R.manuals <https://doi.org/10.32614/R.manuals>.
<https://www.R-project.org/>.
Uma entrada BibTeX para usuários(as) de LaTeX é
@Manual{,
title = {R: A Language and Environment for Statistical Computing},
author = {{R Core Team}},
organization = {R Foundation for Statistical Computing},
address = {Vienna, Austria},
year = {2026},
doi = {10.32614/R.manuals},
url = {https://www.R-project.org/},
}
We have invested a lot of time and effort in creating R, please cite it
when using it for data analysis. See also ‘citation("pkgname")’ for
citing R packages.
Se usar algum pacote do R veja como citá-lo digitando
citation(pack="NOME DO PACOTE")
"When talking about user friendliness of computer software I like the analogy of cars vs. busses: […] Using this analogy programs like SPSS are busses, easy to use for the standard things, but very frustrating if you want to do something that is not already preprogrammed. R is a 4-wheel drive SUV (though environmentally friendly) with a bike on the back, a kayak on top, good walking and running shoes in the passenger seat, and mountain climbing and spelunking gear in the back. R can take you anywhere you want to go if you take time to learn how to use the equipment, but that is going to take longer than learning where the bus stops are in SPSS." –Greg Snow