Symbolic Math Toolbox

ezmesh

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 symbolic expression that represents a mathematical function of two variables, such as x and y.

The function f is plotted over the default domain , . 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, .

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

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.

• syms x y
  ezmesh(x*exp(-x^2-y^2),[-2.5,2.5],40)
  colormap([0 0 1])
  
  
  

See Also

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

ezcontourf

ezmeshc