Resume
Samenvatting statistiek, deel 3: software - Using R in RStudio
- Établissement
- Katholieke Universiteit Leuven (KU Leuven)
Dit is een samenvatting van statistiek, deel 3: software over Using R in RStudio
[Montrer plus]
Aperçu du contenu
Introduction to R: Using R in RStudioTable of contents
1. Credit and license.......................................................................................2
2. Working in RStudio.....................................................................................3
3. Working in the Console Panel......................................................................3
3.1. R can sometimes tell that you’re not finished yet (but not often)............................3
3.2. Autocomplete using “tab......................................................................................... 3
3.3. Browsing your command history..............................................................................4
4. Using the History panel for accessing your command history........................4
5. Using the Environment Pane for managing the workspace............................4
5.1. Listing the content of the workspace.......................................................................4
5.1.1. Doing it using the R console..............................................................................5
5.2. Removing variables from the workspace.................................................................5
5.2.1. Doing it using the R console..............................................................................5
6. Using the Files pane for navigating the file system (and more!)....................5
6.1. Setting the working directory...................................................................................5
7. Using the Help panel to, well, get help........................................................6
7.1. How to reach the help documentation.....................................................................6
7.2. How to read the help documentation.......................................................................6
8. Using the Packages pane for dealing with R packages..................................6
8.1. Downloading and installing new R Packages...........................................................7
8.2. Loading R packages................................................................................................. 7
8.3. Unloading a package............................................................................................... 7
8.4. Packages and the environment................................................................................7
8.5. Updating R packages............................................................................................... 7
8.6. A few extra comments............................................................................................. 8
9. Using the Files or Environment panes for importing data files......................8
10. Using the Plots panel................................................................................8
11. Using scripts in the Source panel..............................................................8
11.1. Why use scripts?.................................................................................................... 9
11.2. Writing our first script............................................................................................ 9
11.3. Running our first script.......................................................................................... 9
11.4. Using RStudio to write and run scripts...................................................................9
11.5. Commenting your script......................................................................................10
11.6. Differences between scripts and the command line............................................10
1
,12. Quitting R............................................................................................... 10
1. Credit and license
Not important
2
, 2. Working in RStudio
RStudio has different panes choosing which panes you see and where by going
to View/Panes/Panes layout (recommendation: stay in the default setting)
Two different ways of doing things
o Using the menu-based or panel-based options provided by RStudio
o Command-based (= text-based interface) options from R
3. Working in the Console Panel
Panel labelled “Console”: R will execute the commands you ask it to perform here
3.1. R can sometimes tell that you’re not finished yet (but
not often)
R can sometimes tell that you’re not finished yet, for example:
o Recap: adding 10 and 20: 10 + 20
If you type in 10+ R thinks you haven’t finished typing so there appears a
blinking cursor next to the plus sign on the new line
o If you type in citation( R thinks you haven’t finished typing because it
misses the )
R cannot always tell that you’re not finished yet, for example:
o You can’t hit enter in the middle of a word: after citat you will get an error
because R thinks you are interested in an object called citat and can’t find
it
o If you type citation: a lot of output, but ignore it
If you make an error, for example: citblation( and you don’t want R to execute the
command, just hit the “escape” key and R will return to the normal command
prompt without attempting to execute the command (in R: CTRL-C)
3.2. Autocomplete using “tab
R has a lot of functions with their own arguments you don’t have to remember
them
Autocomplete ability in RStudio, for example:
3
, o If you want to round a number, you start typing ro and then hit the “tab”
key you will get a display with a little window with two panels and you
can choose an option by clicking it or using the arrow keys
o Left: list of variables and functions that start with the letters you
typed in and grey text that had to do with packages
o Right: information about the option you choose
o If you already typed the full name of the function and you are trying to
type the arguments, you can hit the “tab” key you will get a display with
a little window with two panels
o Left: list of argument names of the function
o Right: information about the option you choose
3.3. Browsing your command history
RStudio keeps track of your command history and you can access it in different
ways
o Using the up and down arrow keys very handy if you’ve typed a long
command that had one typo in it
o If you hit the up key, R console will show you the most recent
command you’ve typed
o Hit the “escape” key if you want the text to go away
o If you start to type some text and hit the “command” key and the up arrow
together, you get a window showing the recent command that started with
the same text as you typed
4. Using the History panel for accessing your
command history
History panel on the upper right-hand side of the RStudio window to see all your
recent commands
If you want one of the commands copied to the R console
o Double click on the command in the History panel
o Select the command you want and click on the “to console” button
5. Using the Environment Pane for managing the
workspace
The workspace or the global environment: abstract location in which R variables
are stored
5.1. Listing the content of the workspace
To examine the contents of the workspace: Environment panel in the top right-
hand corner lists all the variables and their values
4
Les avantages d'acheter des résumés chez Stuvia:
Qualité garantie par les avis des clients
Les clients de Stuvia ont évalués plus de 700 000 résumés. C'est comme ça que vous savez que vous achetez les meilleurs documents.
L’achat facile et rapide
Vous pouvez payer rapidement avec iDeal, carte de crédit ou Stuvia-crédit pour les résumés. Il n'y a pas d'adhésion nécessaire.
Focus sur l’essentiel
Vos camarades écrivent eux-mêmes les notes d’étude, c’est pourquoi les documents sont toujours fiables et à jour. Cela garantit que vous arrivez rapidement au coeur du matériel.
Foire aux questions
Qu'est-ce que j'obtiens en achetant ce document ?
Vous obtenez un PDF, disponible immédiatement après votre achat. Le document acheté est accessible à tout moment, n'importe où et indéfiniment via votre profil.
Garantie de remboursement : comment ça marche ?
Notre garantie de satisfaction garantit que vous trouverez toujours un document d'étude qui vous convient. Vous remplissez un formulaire et notre équipe du service client s'occupe du reste.
Auprès de qui est-ce que j'achète ce résumé ?
Stuvia est une place de marché. Alors, vous n'achetez donc pas ce document chez nous, mais auprès du vendeur emilievanhecke. Stuvia facilite les paiements au vendeur.
Est-ce que j'aurai un abonnement?
Non, vous n'achetez ce résumé que pour €4,79. Vous n'êtes lié à rien après votre achat.
Peut-on faire confiance à Stuvia ?
4.6 étoiles sur Google & Trustpilot (+1000 avis)
80467 résumés ont été vendus ces 30 derniers jours
Fondée en 2010, la référence pour acheter des résumés depuis déjà 14 ans