Contour, Surface, and Mesh Plotter
Easy-to-use contour and 3-D surface resp mesh plotter.
ezcontour(f, xlim = c(-pi,pi), ylim = c(-pi,pi),
n = 60, filled = FALSE, col = NULL)
ezsurf(f, xlim = c(-pi, pi), ylim = c(-pi, pi),
n = 60, ...)
ezmesh(f, xlim = c(-pi,pi), ylim = c(-pi,pi),
n = 60, ...)f |
2-D function to be plotted, must accept |
xlim, ylim |
defines x- and y-ranges as intervals. |
n |
number of grid points in each direction. |
col |
colour of isolines lines, resp. the surface color. |
filled |
logical; shall the contour plot be |
... |
parameters to be passed to the |
ezcontour generates a contour plot of the function f using
contour (and image if filled=TRUE is chosen).
If filled=TRUE is chosen, col should be a color scheme,
the default is heat.colors(12).
ezsurf resp. ezmesh generates a surface/mesh plot of the
function f using persp.
The function f needs not be vectorized in any form.
Plots the function graph and invisibly returns NULL.
Mimicks Matlab functions of the same names; Matlab's ezcontourf can
be generated with filled=TRUE.
## Not run:
f <- function(xy) {
x <- xy[1]; y <- xy[2]
3*(1-x)^2 * exp(-(x^2) - (y+1)^2) -
10*(x/5 - x^3 - y^5) * exp(-x^2 - y^2) -
1/3 * exp(-(x+1)^2 - y^2)
}
ezcontour(f, col = "navy")
ezcontour(f, filled = TRUE)
ezmesh(f)
ezmesh(f, col="lightblue", theta = -15, phi = 30)
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.