Draw rectangles on a nativeRaster image

Draw rectangles on a nativeRaster image

nr_rect(nr, x, y, w, h, fill = "black", color = NA, hjust = 0, vjust = 0)

Arguments

nr: nativeRaster
x, y: coordinates of lower left corner of rectangle. [vector]
w, h: width and height of rectangle. [vector]
fill: interior fill color [vector]
color: outline color. Default: NA. [vector]
hjust, vjust: specify horizontal and vertical justification of the src image. e.g. hjust = vjust = 0 the blitting starts at the top-left of the image. Use hjust = vjust = 0.5 to treat the centre of the src_ as the blitting origin. Default (0, 0)

Value

Original nativeRaster modified in-place

Examples

N <- 20
nr <- nr_new(N, N, 'grey80')
nr_rect(nr, x = c(0, N/2 - 1), y = c(0, N/2 - 1), w = N/2, h = N/4, 
        fill = 'blue', color = c('red', 'green'))
plot(nr)