@@ -283,7 +283,7 @@ <h2>R, les assignations</h2>
283283< h2 > R, les fonctions</ h2 >
284284< p > Les fonctions sont très importantes dans R. C’est elles qui effectuent tous vos calculs. Pour appeler une fonction, on utilise son nom suivi d’une parenthèse, et éventuellement un ou plusieurs arguments fournis à l’intérieur de la parenthèse et séparés par une virgule < code > fun_name(arg1, arg2, ...)</ code > . Voici un exemple d’une fonction appelée sans argument :</ p >
285285< pre class ="r "> < code > Sys.Date()</ code > </ pre >
286- < pre > < code > [1] "2019-08-22 "</ code > </ pre >
286+ < pre > < code > [1] "2019-08-23 "</ code > </ pre >
287287< p > Une autre fonction appelée avec un seul argument :</ p >
288288< pre class ="r "> < code > x <- 1:4
289289sum(x)</ code > </ pre >
@@ -374,7 +374,7 @@ <h2>Imbrication et chaînage</h2>
374374< p > Mais dans ce dernier cas, la lecture devient plus difficile. On peut aussi < strong > chaîner</ strong > des instructions avec l’opérateur < code > %>.%</ code > dans la version < code > SciViews::R</ code > qui charge des “packages” supplémentaires pour fournir des fonctions en plus de R de base :</ p >
375375< pre class ="r "> < code > # Installer SciViews::R
376376SciViews::R</ code > </ pre >
377- < pre > < code > ── Attaching packages ────────────────────────────────────────── SciViews::R 1.1.0 ──</ code > </ pre >
377+ < pre > < code > ── Attaching packages ──────────────────────────────────────────────────────────────────────────────────────────── SciViews::R 1.1.0 ──</ code > </ pre >
378378< pre > < code > ✔ SciViews 1.1.0 ✔ purrr 0.3.2
379379✔ chart 1.3.0 ✔ readr 1.3.1
380380✔ flow 1.0.0 ✔ tidyr 0.8.3
@@ -383,7 +383,7 @@ <h2>Imbrication et chaînage</h2>
383383✔ forcats 0.4.0 ✔ tidyverse 1.2.1
384384✔ stringr 1.4.0 ✔ lattice 0.20.38
385385✔ dplyr 0.8.0.1 ✔ MASS 7.3.51.3</ code > </ pre >
386- < pre > < code > ── Conflicts ─────────────────────────────────────────────── tidyverse_conflicts() ──
386+ < pre > < code > ── Conflicts ───────────────────────────────────────────────────────────────────────────────────────────────── tidyverse_conflicts() ──
387387✖ dplyr::filter() masks stats::filter()
388388✖ dplyr::lag() masks stats::lag()
389389✖ dplyr::select() masks MASS::select()</ code > </ pre >
@@ -532,7 +532,7 @@ <h2>Conclusion</h2>
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