Colored polygonal region

Friendly function to create a polygon corresponding with given values of the polygon's corners. The polygon is then colored automatically.

dsregion(..., col = "yellow", border = NA, behind = TRUE)

dspolygon(x, y, col = "yellow", border = NA, behind = TRUE)

Arguments

...	Takes points which will act as corners. See example and details for usage.
col	The color of the polygon
border	The color of the border of the polygon.
behind	Forces the polygon to be a background object for the purposes of layering.
x	A numeric vector containing the x-values of each corner.
y	A collection (for example: c(1,2,3)) of points on the y-axis which correspond to the corners of the polygon. Each member of the y parameter corresponds with a member of the x parameter with the same index.

Calling dspolygon Correctly

dspolygon takes the x and y points similar to the default polygon function. The x parameter takes a numeric vector containing the x-values of each corner. The y parameter takes a numeric vector containing the y-values of each corner. The x and y coordinates of the corners of the polygon will be the pairs made from the x and y parameters with equal indices.

Calling dsregion Correctly

The ... parameter in dsregion can take multiple dspoints, pnts, or simply vectors each containing two points c(x,y). See the examples if clarification is needed.

See also

dspoint simattractors simbasins

Examples

library(dsmodels)

fun <- function(X,Y) {
  list(
    X/exp(Y),
    Y/exp(X)
  )
}
model <- dsmodel(fun, title = "Regions!")
range <- dsrange(3, 3, discretize = .09)
model+range

# dspolygon usage
model + dspolygon(x = c(-.05,3,3),
                  y = c(0,0,3),
                  col = "yellow")
a <- dspoint(3,3)
b <- dspoint(2.5,3)
c <- dspoint(2,2)

# Different inputs for dsregion shown below

model + dsregion(a, b, c, col = "orange") +
        dsregion(pnt(0,0),pnt(1,0),pnt(1,1),pnt(0,1), col = "green") +
        dsregion(c(1,1),c(2,1),c(2,2),c(1,2), c(1.8,1.5), col = "magenta")