Tiny mistake in the code

[songhost-wc]

http://swcarpentry.github.io/r-novice-inflammation/04-cond/
In the Making Choices module, the very last command before the last exercise:

analyze_all("inflammation*.csv")

Here, "inflammation_.csv" is inconsistent with previous commands. It should be changed to "inflammation._csv". I suppose it takes a regex, so the .* replaces for any number of characters after inflammation.

[jangari]

Markdown gobbled the asterisks. The point here is that inflammation*.csv is expanded to inflammation plus any number of n, plus any character, plus csv.

This line should read analyze_all("inflammation.*csv").

Eg:

> filenames1 <- list.files(path = "data", pattern = "inflammation*.csv")
> filenames1
character(0)
> filenames1 <- list.files(path = "data", pattern = "inflammation.*csv")
> filenames1
 [1] "inflammation-01.csv" "inflammation-02.csv" "inflammation-03.csv" "inflammation-04.csv" "inflammation-05.csv" "inflammation-06.csv" "inflammation-07.csv"
 [8] "inflammation-08.csv" "inflammation-09.csv" "inflammation-10.csv" "inflammation-11.csv" "inflammation-12.csv"

[RMHogervorst]

correct.
the period (.) means any character. the star after the period means repeat zero or more times.
So .* means: [ any single character][matched zero or more times]

[bbolker]

I think this has been resolved?

[katrinleinweber]

Fixed by 3ee4039, but improvement discussion in #337.