RGB2GRAY: translates an RGB image matrix to gray scale

Description Usage Arguments Details Value Author(s) Examples

Description

This function translates the rgb values of the array myTile into a scalar matrix with just one gray value per pixel.

Usage

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RGB2GRAY(myTile)

Arguments

myTile

rgb image matrix, usually array with 3 dimensions

Details

Gray scale intensity defined as 0.30R + 0.59G + 0.11B

Value

image tile

Author(s)

Markus Loecher

Examples

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if (0){


  BrooklynLatLon = getGeoCode("Brooklyn")


  mapBrooklyn <- GetMap(center=BrooklynLatLon, destfile = file.path(tempdir(), "Brooklyn.png"), 


                 zoom=11, size = c(240,240))


  mapBrooklynBW$myTile = RGB2GRAY(mapBrooklyn$myTile)


  PlotOnStaticMap(mapBrooklynBW)


}

RgoogleMaps documentation built on Feb. 12, 2020, 5:59 p.m.