Plot data over an image — data.overlay • trackter

Simple wrapper for points to plot data derived from an image over that image.

data.overlay(img, over, ...)

Arguments

img: character, an image file path.
over: a data frame, data table, or matrix with two columns, the first representing x and the second y coordinates.
...: other arguments to be passed to points

Value

The image is plotted in the graphics device with points given in x

Details

Simply plots 2D dimensional data over the image specified in img. May be useful in plotting output from trackter's kin functions.

See also

kin.free, kin.search, kin.simple

Examples


f <-system.file("extdata/img", "sunfish_BCF.jpg", package = "trackter")

d <- dim(EBImage::readImage(f))

x <- runif(10,1,d[1])
y <- runif(10,1,d[2])
pts <- cbind(x,y)

data.overlay(img=f,over=pts,col="red",type="p")