example datasets

[jonathancallahan]

In order to have examples that people can run, we need to have some small example datasets that go with the package.

Example data.R file from our packages include:

• https://github.com/MazamaScience/AirSensor/blob/master/R/data.R
• https://github.com/MazamaScience/MazamaSpatialPlots/blob/master/R/data.R

It is OK to use existing package functionality to create these (no chicken/egg issues) and the documentation should include the precise code used to create an example and the date on which it was run. We're striving for "open-transparent-reproducible".

I like to create example datasets with names that begin with example_~ just so that it is always clear what it is. They also want to be reasonably small so that the package can make it past the CRAN gatekeepers (<1 MB total if possible).

I think we should have the following example datasets:

• example_fw13Meta -- Washington state subset of fw13 metadata
• example_wrccMeta -- Washington state subset of wrcc metadata
• example_fw13<siteName> -- fw13 timeseries data for 2017? from some place in Eastern Washington with big temperature swings
• example_fw13<siteName> -- wrcc_timeseries (limited to current month) from the same or a nearby location