Highlight Segments

Plots a river network object and displays specified segments in bold, for easy identification.

highlightseg(seg, rivers, cex = 0.8, lwd = 3, add = FALSE,
  color = FALSE, ...)

Arguments

seg	A vector of segments to highlight
rivers	The river network object to use
cex	The character expansion factor to use for segment labels
lwd	The line width to use for highlighted segments
add	Whether to add the highlighted segments to an existing plot (`TRUE`) or call a new plot (`FALSE`). Defaults to `FALSE`.
color	Whether to display segment labels as the same color as the segments. Defaults to `FALSE`.
...	Additional plotting arguments (see par)

data(Kenai3)
plot(Kenai3)
highlightseg(seg=c(10,30,68),rivers=Kenai3)