Description Usage Arguments Details Value References
View source: R/mobility-data.R
Descartes Labs is releasing mobility statistics (representing the distance a typical member of a given population moves in a day) at the US admin1 (state) and admin2 (county) level. A technical report describing the motivation behind this work with methodology and definitions is available here (pdf).
1 | get_descartes_mobility(admin = c("county", "state", "all"))
|
admin |
character. One of county, state, or all. |
Note: Data for 2020-04-20
did not meet quality control standards, and was not released.
From the methodology paper....
These statistics include the mean, median and quartiles. For the results reported here,
we focus on the median of the max-distance mobility Mmax, which we designate m50
.
We further define a normalized mobility index m50_index = 100 * (m50 / m50_norm)
where
m50_norm
is a "normal" value of m50
in a region, defined as the median m50
in that
region during a designated earlier time period. We use the median weekday value of m50
between the dates of 2020-02-17
and 2020-03-07
as m50_norm
to investigate
COVID-19 related changes in the US. Note that m50
has dimensions of kilometers,
while m50_index
is dimensionless. m50_index
is easily transformed to a percentage
change from baseline behavior via m50_pct_change = m50_index - 100
df
Warren & Skillman 2020. Mobility Changes in Response to COVID-19. descarteslabs.com/mobility-v097
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