PlotArrowsOnStaticMap: plots arrows or segments on map

Description Usage Arguments Value Author(s) See Also Examples

Description

This function plots/overlays arrows or segments on a map.

Usage

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PlotArrowsOnStaticMap(MyMap, lat0, lon0, lat1 = lat0, lon1 = lon0, 


    TrueProj = TRUE, FUN = arrows, add = FALSE, verbose = 0, 


    ...)

Arguments

MyMap

map image returned from e.g. GetMap()

lat0

latitude valuesof points FROM which to draw.

lon0

longitude values of points FROM which to draw.

lat1

latitude valuesof points TO which to draw.

lon1

longitude values of points TO which to draw.

TrueProj

set to FALSE if you are willing to accept some degree of inaccuracy in the mapping. In that case, the coordinates of the image are in lat/lon and the user can simply overly points/lines/axis without worrying about projections

FUN

, plotting function to use for overlay; typical choices would be arrows and segments

add

start a new plot or add to an existing

verbose

level of verbosity

...

further arguments to be passed to FUN

Value

return value of FUN

Author(s)

Markus Loecher

See Also

PlotOnStaticMap arrows

Examples

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    MyMap <- GetMap(center=c(lat=40.7,lon=-74), zoom=11)


PlotArrowsOnStaticMap(MyMap, lat0=40.69, lon0=-73.9, lat1=40.71, lon1=-74.1, col = 'red')   

RgoogleMaps documentation built on May 31, 2017, 2:54 a.m.