map.ces: Map CES Sites

In btorobrob/cesr: Trend analysis of Constant Effort Site ringing data

Map CES Sites

Description

Plot CES sites on a simple outline map

Usage

map.ces(cesobj, type='c', xlim=c(-20,30), ylim=c(35,70), pch=21, col=c('white','red'), file=NULL, width=640, height=480, lwd=1, cex=1, units='px', mar = c(1, 1, 1, 1), ...)

Arguments

cesobj	A CES object with site information, usually generated by extract.sites()
type	How to identify sites: currently 'c' for current/non-current, 'n' for number of years operating, 'h' for habitat, and 's' for site-specific colours
xlim	Minimum and maximum longitude bounds, note R will make this 'pretty'
ylim	Minimum and maximum latitude bounds, note R will make this 'pretty'
pch	A numeric value (21-25) identifying symbol type, see ?pch, but 21=circles, 22=squares
col	A vector of colors to fill points, see type
lwd	if pch=21:25, weight of point borders, useful for highlighting e.g. current sites
cex	size of points
file	A valid filename to plot the map to, identified by extension, current options recognised are .png, .jpg (or .jpeg), .tif (or .tiff) and .ps
width, height	size of map (normally in pixels)
units	Units for the size, use 'mm' if outputting to pdf/postscript file
...	Additional arguments passed to map, such as border and lty that control the color and line type of the polygon borders if fill=TRUE is specified.

Details

The default is to color points by whether they are current (second element of col) or historic - the latest year present is taken to represent the 'current' year. If type='n' then the plot will depend on the number of colors, two will separate sites below/above the median number of years operated; three the bottom quartile, the middle 50 percent and the upper quartile (approximately) and four will split by quartile. Any expansion of 'Current', 'No Years', 'Habitat' should work (only the first letter is significant and case is not important).

Value

None

Author(s)

Rob Robinson

Examples

data(ukdata)
sites<-extract.sites(ukdata)
map.ces(sites)

btorobrob/cesr documentation built on June 9, 2025, 5:39 a.m.