MATLAB Function Reference

ezmesh

Easy to use 3-D mesh plotter

Syntax

ezmesh(f)
ezmesh(f,domain)
ezmesh(x,y,z)
ezmesh(x,y,z,[smin,smax,tmin,tmax]) or ezmesh(x,y,z,[min,max])
ezmesh(...,n)
ezmesh(...,'circ')

Description

ezmesh(f) creates a graph of f(x,y), where f is a string that represents a mathematical function of two variables, such as x and y.

The function f is plotted over the default domain: -2 < x < 2, -2 < y < 2. MATLAB chooses the computational grid according to the amount of variation that occurs; if the function f is not defined (singular) for points on the grid, then these points are not plotted.

ezmesh(f,domain) plots f over the specified domain. domain can be either a 4-by-1 vector [xmin, xmax, ymin, ymax] or a 2-by-1 vector [min, max] (where, min < x < max, min < y < max).

If f is a function of the variables u and v (rather than x and y), then the domain endpoints umin, umax, vmin, and vmax are sorted alphabetically. Thus, ezmesh('u^2 - v^3',[0,1],[3,6]) plots u² - v³ over 0 < u < 1, 3 < v < 6.

ezmesh(x,y,z) plots the parametric surface x = x(s,t), y = y(s,t), and z = z(s,t) over the square: -2 < s < 2, -2 < t < 2.

ezmesh(x,y,z,[smin,smax,tmin,tmax]) or ezmesh(x,y,z,[min,max]) plots the parametric surface using the specified domain.

ezmesh(...,n) plots f over the default domain using an n-by-n grid. The default value for n is 60.

ezmesh(...,'circ') plots f over a disk centered on the domain.

Remarks

rotate3d is always on. To rotate the graph, click and drag with the mouse.

Array multiplication, division, and exponentiation are always implied in the expression you pass to ezmesh. For example, the MATLAB syntax for a mesh plot of the expression,

sqrt(x.^2 + y.^2);

is written as:

ezmesh('sqrt(x^2 + y^2)')

That is, x^2 is interpreted as x.^2 in the string you pass to ezmesh.

Examples

This example visualizes the function,

with a mesh plot drawn on a 40-by-40 grid. The mesh lines are set to a uniform blue color by setting the colormap to a single color:

ezmesh('x*exp(-x^2-y^2)',40)
colormap [0 0 1]

See Also

ezcontour, ezcontourf, ezmeshc, ezplot, ezplot3, ezpolar, ezsurf, ezsurfc, mesh

ezcontourf

ezmeshc