riverdist (version 0.17.0)

riverpoints: Draw Points from River Locations

Description

Adds points to an active plot. Works like points but with river locations (segments and vertices) rather than xy coordinates.

Usage

riverpoints(seg, vert, rivers, pch = 1, col = 1, jitter = 0, ...)

Arguments

seg

A vector of segments

vert

A vector of vertices

rivers

The river network object to use

pch

Point character, as a vector or single value

col

Point color, as a vector or single value

jitter

Maximum amount of random noise to add to "jitter" points if desired, so points do not overlap one another

...

Additional arguments for points

Author

Matt Tyers

Examples

data(fakefish,Gulk)

plot(x=Gulk, xlim=c(862000,882000), ylim=c(6978000,6993000))
points(x=fakefish$x, y=fakefish$y, pch=16, col=2)
riverpoints(seg=fakefish$seg, vert=fakefish$vert, rivers=Gulk, pch=15, col=4)

plot(x=Gulk, empty=TRUE)
with(fakefish, riverpoints(seg=seg, vert=vert, rivers=Gulk, 
       pch=16, col=flight, jitter=1000))