2 Setup
2.1 Loading required libraries
Our first step is to load the inventory and BY2011 packages.
library(inventory)
library(BY2011)Wait for it — inventory imports a lot of stuff! You will see a lot of red message text scroll by.
2.2 Peeking at data
BY2011_annual_emission_data is tabular data supplied by the BY2011
package. Since we invoked library(BY2011), we have access to it. Here is what it looks like.
head(BY2011_annual_emission_data)| year | cnty_abbr | cat_id | pol_abbr | ems_qty | ems_unit |
|---|---|---|---|---|---|
| CY1990 | ALA | 23 | PM10 | 6.311385 | ton/yr |
| CY1990 | ALA | 23 | PM2.5 | 6.241259 | ton/yr |
| CY1990 | ALA | 23 | ROG | 82.422747 | ton/yr |
| CY1990 | ALA | 23 | TOG | 87.219838 | ton/yr |
| CY1990 | ALA | 23 | TSP | 7.012650 | ton/yr |
| CY1990 | ALA | 24 | CO2 | 3.652422 | ton/yr |