Description Usage Arguments Value Note Examples
View source: R/fars_functions.R
This is a function that takes an integer representing state.num
and 4 digit year
as input and FARS data into a data frames using
make_filename
and fars_read
.
The FARS data is filtered by state.num
, and if the filter criteria
does not exist in the dataset, the function will throw an error for invalid state.
The filtered data will be plotted as a heat map where area with more accidents
will be shown in darker spots. The function will give a message "no accident to plot"
if there is no accident to report for the state and year.
1 | fars_map_state(state.num, year)
|
state.num |
An integer of 4 indicating the state number. Valid values are 1 to 51, except 3 |
year |
A 4 digit integer or string indicating the year |
This function does not have any return value, but it will plot it will plot a heat map of the accident for the given state and year.
Though the function anticipates giving a message if no accident is reported
for a state in a given year, there is a very good chance that this portion of the
code will not be trigerred due to a check to ensure the state.num
filter
parameter is in the data set.
1 | ## Not run: fars_map_state(1,2015)
|
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