adds a colored and rotated rectangle to a plot

Share:

Description

plots and colors a rotated rectangle; color can be a palette

Usage

1
2
3
filledrectangle(mid = c(0, 0), wx = 1, wy = wx, col = femmecol(100), 
                values = NULL, zlim = NULL, lwd = 2, lcol = NA, 
                angle = 0, ...)

Arguments

mid

midpoint of rectangle.

wx

horizontal width.

wy

vertical width.

col

color palette to be used; also allowed are two extremes or one value.

values

if not NULL, a matrix providing (radius,z-values) couples, used for coloring.

zlim

Only if values is not NULL: the minimum and maximum z values for which colors should be plotted, defaulting to the range of the finite values of the second column of values.

lwd

width of external line.

lcol

line color.

angle

angle of rotation, in degrees.

...

arguments passed to R-function polygon.

Details

If angle=0, coloration starts from top to bottom. This is different from filledmultigonal, where coloration proceeds from middle to external

wx,wy: horizontal and vertical width of the shape Here "horizontal" and "vertical" denote the position BEFORE rotation

values: if not NULL, a matrix providing (radius,z-values) couples, used for coloring. Here radius are positive values denoting the relative distance between the shapes centre and edge. The radiusses are rescaled to be in [0,1] if needed. z-values (2nd column of values) together with zlim and col denote the coloration level.

Colors in col will be interpolated to the z-values and used to color an interval as given by the input radiusses.

Author(s)

Karline Soetaert <karline.soetaert@nioz.nl>

See Also

filledmultigonal, filledshape, filledcylinder, filledellipse

polygon, rect for corresponding R-functions.

Examples

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
color <- shadepalette(grey(0.3), "lightblue", n = 50)
emptyplot(main = "filledrectangle")
filledrectangle(wx = 0.5, wy = 0.5, col = color, 
                mid = c(0.5, 0.5), angle = 0)
filledrectangle(wx = 0.25, wy = 0.25, col = "darkblue", 
                mid = c(0.5, 0.5), angle = 45)
filledrectangle(wx = 0.125, wy = 0.125, col = c("lightblue","blue"),
                mid = c(0.5, 0.5), angle = 90)
  
color <- shadepalette(grey(0.3), "blue", n = 50)
emptyplot(c(-1, 1), main = "filledrectangle")
filledrectangle(wx = 0.5, wy = 0.5, col = color, 
                mid = c(0, 0), angle = 0)
filledrectangle(wx = 0.5, wy = 0.5, col = color, 
                mid = c(0.5, 0.5), angle = 90)
filledrectangle(wx = 0.5, wy = 0.5, col = color, 
                mid = c(-0.5, -0.5), angle = -90)
filledrectangle(wx = 0.5, wy = 0.5, col = color, 
                mid = c(0.5, -0.5), angle = 180)
filledrectangle(wx = 0.5, wy = 0.5, col = color, 
                mid = c(-0.5, 0.5), angle = 270)