ezplot
(Not recommended) Easy-to-use function plotter
ezplot is not recommended. Use fplot instead.
Syntax
ezplot(fun)
ezplot(fun,[xmin,xmax])
ezplot(fun2)
ezplot(fun2,[xymin,xymax])
ezplot(fun2,[xmin,xmax,ymin,ymax])
ezplot(funx,funy)
ezplot(funx,funy,[tmin,tmax])
ezplot(...,fig)
ezplot(ax,...)
h = ezplot(...)
Description
ezplot(fun) plots the expression
fun(x) over the default domain -2π < x < 2π,
where fun(x) is an explicit function of only x.
fun can be a function handle, a character vector, or a string.
ezplot(fun,[xmin,xmax]) plots
fun(x) over the domain: xmin < x
< xmax.
For an implicit function, fun2(x,y):
ezplot(fun2) plots fun2(x,y) =
0 over the default domain -2π < x < 2π, -2π <
y < 2π.
ezplot(fun2,[xymin,xymax]) plots
fun2(x,y) = 0 over xymin < x
< xymax and xymin < y <
xymax.
ezplot(fun2,[xmin,xmax,ymin,ymax]) plots
fun2(x,y) = 0 over xmin < x
< xmax and ymin < y <
ymax.
ezplot(funx,funy) plots the parametrically
defined planar curve funx(t) and funy(t) over the
default domain 0 < t < 2π.
ezplot(funx,funy,[tmin,tmax]) plots
funx(t) and funy(t) over tmin <
t < tmax.
ezplot(...,fig) plots into the figure window
identified by fig. Use any of the input argument combinations in the
previous syntaxes that include a domain. The domain options are [xmin
xmax], [xymin xymax], [xmin xmax ymin ymax],
and [tmin tmax].
ezplot(ax,...) plots into the axes
ax instead of the current axes (gca).
h = ezplot(...) returns either a chart line or
contour object.
Examples
Plot an Explicit Function
Plot the explicit function over the domain .
ezplot('x^2')
The default domain is .
Plot an Implicit Function
Plot the implicitly defined function over the domain .
ezplot('x^2-y^4')
The default domain is .
Tips
Passing the Function as a Character Vector or String
Array multiplication, division, and exponentiation are always implied in the expression
you pass to ezplot. For example, the MATLAB® syntax for a plot of the expression
x.^2 - y.^2
which represents an implicitly defined function, is written as
ezplot('x^2 - y^2')That is, x^2 is interpreted as x.^2 in the
character vector or string you pass to ezplot.
Passing a Function Handle
Function handle arguments must point to functions that use MATLAB syntax. For example, the following statements define an anonymous function and
pass the function handle fh to ezplot.
fh = @(x,y) x.^2 + y.^3 - 2*y - 1; ezplot(fh) axis equal
Note that when using function handles, you must use the array power, array
multiplication, and array division operators (.^, .*, ./) since
ezplot does not alter the syntax, as in the case with character
vector or string inputs.
Passing Additional Arguments
If your function has additional parameters, for example k in
myfun:
function z = myfun(x,y,k) z = x.^k - y.^k - 1;
then you can use an anonymous function to specify that parameter:
ezplot(@(x,y)myfun(x,y,2))