drawPolygon: Interactive drawing of a polygon

In bnasr/xROI: Delineate Region of Interests (ROI's) and Extract Time-Series Data from Digital Repeat Photography Images

Description

This function provides an interactive tool for drawing of polygons by user clicks on the plotted graphics

Usage

drawPolygon(col = "#80303080", lty = 1, ...)

Arguments

col	a character string, color value of the polygon polygon
lty	a numeric value, lty variable as line type
...	passing graphical arguments

Value

the coodinates of the clicked points

Examples

#user can click to add vertices, pressing the Escape key would end it.
if(interactive()){
   drawPolygon()
}

bnasr/xROI documentation built on June 7, 2021, 7:56 a.m.