Documenting data objects

If you include a data set in your package you must also provide documentation for it. As with package level documentation, you should include a title and description.

With a data set, once again, there is no function object to document. You instead give the name of the dataset as a character string, for instance "airquality". Additionally there are two tags that you need to use:

@format to describe the format of the data. This is often used with the describe format.
@source to identify where the data came from.

You should then save the package documentation in the R directory with a suitable name (in the above case, either airquality.R or data.R).

The weather dataset is available in your workspace. Run print(weather) to view it.

Update the @format tag to include the correct number of rows and columns in weather.
Add descriptions of all columns in the weather dataset that you added to your package in the last chapter.
Add a @source tag to and describe the data as "Randomly generated data".

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Exercise

Documenting data objects

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