Select image regions by plotting interactive polygons

Plot interactive polygons on an image and retrieve the polygons coordinates.

plotInteractivePolygons(x, width = "auto", height = "auto", ...)

Arguments

x

A `ggplot` or `rast` plot object to draw polygons on

width, height

An integer, defining the width/height in pixels.

...

Graphical parameters passed on to `polygon` or `geom_point`.

Value

A `data.table` containing x,y coordinates from the plotted polygons.