Takes a folder of stay-at-home Safegraph data structured how it comes from AWS (i.e. folders 2020/04/03 for April 3 2020) and reads them in.
Date object with the starting date to read in stay-at-home data.
Ending date to read stay-at-home data to.
The folder in which the "2020" (etc.) folder resides.
TRUE to use the
origin_census_block_group variable to generate
county_fips as numeric variables. This will also result in
origin_census_block_group being converted to character.
After reading, collapse to this level by
summing all the data. Usually
gen_fips = TRUE. Set to
NULL to aggregate across all initial rows, or set to
FALSE to not aggregate at all.
A character string describing a logical statement for filtering the data, for example
filter = 'state_fips == 6' would give you only data from California. Will be used as an
i argument in a
help(data.table). Filtering here instead of afterwards can cut down on time and memory demands.
Character vector of variables to get from the file. Set to
NULL to get all variables.
Other arguments to be passed to
data.table::fread when reading in the file. For example,
nrows to only read in a certain number of rows.
The stay-at-home data is no longer being updated as of April 19, 2021. This function should still work for the old data though.
Note that after reading in data, if
gen_fips = TRUE, state and county names can be merged in using