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Computes the sum of the geopoints. Missing values are bypassed in this calculation. If there are no valid values, then nil is returned.
Anchor times times
vector times ( geopoints )
Extracts the times of all the geopoints and returns them as a vector.
Anchor values values
vector or list values ( geopoints )
vector or list values ( geopoints, number )
vector or list values ( geopoints, string )
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