GeoId | R Documentation |
This function obtains the indices of incidents within a specified distance around a specified point.
GeoId(x, y, distance, x.latitude = "latitude", x.longitude = "longitude", y.latitude = "latitude", y.longitude = "longitude")
x |
data frame containing the longitude and the latitude of a point. |
y |
data frame containing the longitude and the latitude of incidents. |
distance |
numeric. The distance from villages in kilometers. |
x.latitude |
character. The variable name for the latitude in |
x.longitude |
character. The variable name for the longitude in |
y.latitude |
character. The variable name for the latitude in |
y.longitude |
character. The variable name for the longitude in |
A vector containing the indices of y
that are within
distance
kilometers around the point specified by x
. If
there are multiple observations in x
, the first row is used as
the point.
Yuki Shiraito, Department of Political Science, University of Michigan shiraito@umich.edu.
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