geosphere (version 1.5-1)

gcLat: Latitude on a Great Circle

Description

Latitude at which a great circle crosses a longitude

Usage

gcLat(p1, p2, lon)

Arguments

p1

Longitude/latitude of a single point, in degrees; can be a vector of two numbers, a matrix of 2 columns (first one is longitude, second is latitude) or a SpatialPoints* object

p2

As above

lon

Longitude

Value

• A numeric (latitude)

References

http://williams.best.vwh.net/avform.htm#Int

See Also

gcLon, gcMaxLat

Examples

gcLat(c(5,52), c(-120,37), lon=-120)

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