addPoints {PBSmapping}R Documentation

Add EventData/PolyData to an Existing Plot as Points

Description

Adds EventData/PolyData to an existing plot, where each unique EID describes a point.

Usage

addPoints (data, xlim = NULL, ylim = NULL, polyProps = NULL,
           cex = NULL, col = NULL, pch = NULL, ...)

Arguments

data EventData or PolyData to add (required).
xlim range of X-coordinates.
ylim range of Y-coordinates.
polyProps PolyData specifying which points to plot and their properties. par parameters passed as direct arguments supersede these data.
cex vector describing character expansion factors (cycled by EID or PID).
col vector describing colours (cycled by EID or PID).
pch vector describing plotting characters (cycled by EID or PID).
... additional par parameters for the points function.

Details

This function clips data to xlim and ylim before plotting. It only adds PolyData containing X and Y columns.

For additional help on the arguments cex, col, and pch, please see par.

Value

PolyData consisting of the PolyProps used to create the plot.

See Also

combineEvents, convDP, findPolys, locateEvents, plotPoints.

Examples

#--- load the data (if using R)
if (!is.null(version$language) && (version$language == "R")) {
  data(nepacLL)
  data(surveyData)
}
#--- plot a map
plotMap(nepacLL, xlim=c(-136, -125), ylim=c(48, 57))
#--- add events
addPoints(surveyData, col=1:7)
[Package PBSmapping version 2.09 Index]