Plot a PolySet as Polylines
Plot a PolySet as polylines.
plotLines (polys, xlim = NULL, ylim = NULL, projection = FALSE,
plt = c(0.11, 0.98, 0.12, 0.88), polyProps = NULL,
lty = NULL, col = NULL, bg = 0, axes = TRUE,
tckLab = TRUE, tck = 0.014, tckMinor = 0.5 * tck, ...)polys |
PolySet to plot (required). |
xlim |
range of X-coordinates. |
ylim |
range of Y-coordinates. |
projection |
desired projection when PolySet lacks a
|
plt |
four element numeric vector |
polyProps |
PolyData specifying which polylines to plot and their
properties. |
lty |
vector describing line types (cycled by |
col |
vector describing colours (cycled by |
bg |
background colour of the plot. |
axes |
Boolean value; if |
tckLab |
Boolean vector (length 1 or 2); if |
tck |
numeric vector (length 1 or 2) describing the length
of tick marks as a fraction of the smallest dimension. If
|
tckMinor |
numeric vector (length 1 or 2) describing the length of tick marks as a fraction of the smallest dimension. These tick marks can not be automatically labelled. If given a two-element vector, the first element describes the tick marks on the x-axis and the second element describes those on the y-axis. |
... |
additional |
The function creates a blank plot when polys equals
NULL. In this case, the user must supply both xlim and
ylim arguments. Alternatively, it accepts the argument
type = "n" as part of ..., which is equivalent to specifying
polys = NULL, but requires a PolySet. In both cases,
the function's behaviour changes slightly. To resemble the
plot function, it plots the border, labels, and other
parts according to par parameters such as col.
For additional help on the arguments lty and col, please
see par.
PolyData consisting of the PolyProps used to create the plot.
To satisfy the aspect ratio, this plotting routine resizes the plot
region. Consequently, par parameters such as
plt, mai, and mar will change. When the function
terminates, these changes persist to allow for additions to the plot.
Nicholas M. Boers, Associate Professor – Computer Science
MacEwan University, Edmonton AB
Last modified Rd: 2013-04-10
local(envir=.PBSmapEnv,expr={
oldpar = par(no.readonly=TRUE)
#--- create a PolySet to plot
polys <- data.frame(PID=rep(1,4),POS=1:4,X=c(0,1,1,0),Y=c(0,0,1,1))
#--- plot the PolySet
plotLines(polys, xlim=c(-.5,1.5), ylim=c(-.5,1.5))
par(oldpar)
})Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.