SpatialCircle: Creates a circle of radius r around a specified point.

In oceanmap: A Plotting Toolbox for 2D Oceanographic Data

Creates a circle of radius r around a specified point.

Description

Returns a SpatialLines object, that defines a circle of radius r around a specified point.

Usage

SpatialCircle(x,y,r,n=100,proj4str)

Arguments

x, y	x and y coordinates of the circle
r	radius (of the same scale as plotting window)
n	precision indicator of the circle.
proj4str	projection string.

Author(s)

Robert K. Bauer

See Also

get.avg.bathy

Examples

## Example 1: load & plot bathymetry of the Baltic Sea, defined by longitudes and latidtues
lon <- c(9, 31)
lat <- c(53.5, 66)
# bathy <- get.bathy(lon=lon, lat=lat, main="Baltic Sea", cbpos='r')
plotmap(lon=lon, lat=lat)
spc <- SpatialCircle(x= 20,y = 57.5,r=1)
plot(spc,add=TRUE)
# get.avg.bathy(c(20,57.5), radius = 1, bathy = bathy)
# get.avg(c(20,57.5), radius = 1, unit="km",raster = bathy)

oceanmap documentation built on Nov. 10, 2023, 5:08 p.m.