filledellipse: adds a colored and rotated ellipse to a plot In shape: Functions for Plotting Graphical Shapes, Colors

Description

plots (part of) outer and inner ellipses and colors inbetween; color can be a palette

Usage

 ```1 2 3``` ```filledellipse(rx1 = 1, rx2 = 0, ry1 = rx1, ry2 = NULL, mid = c(0,0), dr = 0.01, angle = 0, from = -pi, to = pi, col = femmecol(100), values = NULL, zlim = NULL, lwd = 2, lcol = NA, ...) ```

Arguments

 `rx1 ` horizontal radius of outer ellipse. `rx2 ` horizontal radius of inner ellipse. `ry1 ` vertical radius of outer ellipse. `ry2 ` vertical radius of inner ellipse. `mid ` midpoint of ellipse. `dr ` size of segments, in radians, to draw ellipse (decrease for smoother). `angle ` rotation angle, degrees. `from ` starting angle for ellipse segment, radians. `to ` final angle for ellipse segment, radians. The segment is drawn counterclockwise. The default is draw a full ellipse. `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. `... ` arguments passed to R-function polygon.

Details

draws (part of) an outer and inner ellipse, as specified by inner and outer radiusses:

`rx1`,`ry1`: horizontal and vertical radiusses of outer ellipse; `rx2`,`ry2`: same for inner ellipse. Here "horizontal" and "vertical" denote the position BEFORE rotation

Fills with a palette of colors inbetween

`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.

If `rx2`, the radius of the inner ellipse is 0, the ellipse is full.

Author(s)

Karline Soetaert <[email protected]>

`filledshape`, `filledcylinder`

Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23``` ```color <- greycol(50) dr <- 0.05 emptyplot(xlim = c(-2, 2), ylim = c(-2, 2), col = color[length(color)], main = "filledellipse") filledellipse(rx1 = 1, mid = c(1, 1) , dr = dr, col = shadepalette(endcol = "darkblue")) filledellipse(rx1 = 1, ry1 = 0.5, mid = c(-1, -1), dr = dr, angle = 90, col = shadepalette(endcol = "darkred")) filledellipse(rx1 = 1, ry1 = 0.5, rx2 = 0.5, dr = dr, mid = c(0, 0), col = c(rev(color), color)) filledellipse(rx1 = 0.5, mid = c(1, -1), dr = dr, from = pi, to = 1.5*pi, col = rev(shadepalette(endcol = "black"))) filledellipse(mid = c(-1, 1)) emptyplot(xlim = c(-2, 2), ylim = c(-2, 2), main = "filledellipse") filledellipse(rx1 = 0.75, mid = c(-1, 1), col = greycol(100) , dr = dr, values = cbind (1:100, (1:100)^0.5)) filledellipse(rx1 = 0.75, mid = c(1, 1), col = greycol(100) , dr = dr, values = cbind (1:100, (1:100))) filledellipse(rx1 = 0.75, mid = c(-1, -1), col = greycol(100), dr = dr, values = cbind (1:100, (1:100)^2)) filledellipse(rx1 = 0.75, mid = c(1, -1), col = greycol(100) , dr = dr, values = cbind (1:100, (1:100)^5)) ```

Example output

```
```

shape documentation built on Feb. 9, 2018, 6:08 a.m.