translates an RGB image matrix to gray scale
This function translates the rgb values of the array myTile into a scalar matrix with just one gray value per pixel.
RGB2GRAY(myTile)
myTile |
rgb image matrix, usually array with 3 dimensions |
Gray scale intensity defined as 0.30R + 0.59G + 0.11B
image tile
Markus Loecher
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)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.