ezpolar
Easy-to-use polar coordinate plotter
Syntax
ezpolar(fun)
ezpolar(fun,[a,b])
ezpolar(axes_handle,...)
h = ezpolar(...)
Description
ezpolar(fun) plots the
polar curve rho = fun(theta) over the default domain
0 < theta < 2π.
fun can be a function handle, a character vector, or a string (see the
Tips
section).
ezpolar(fun,[a,b]) plots fun for
a < theta < b.
ezpolar(axes_handle,...) plots
into the axes with handle axes_handle instead of
the current axes (gca).
h = ezpolar(...) returns
the handle to a line object in h.
Examples
Polar Plot of Mathematical Function
Plot the function over the domain .
figure
ezpolar('1+cos(t)')
Tips
Passing the Function as a Character Vector or String
Array multiplication, division, and exponentiation are always
implied in the expression you pass to ezpolar.
For example, the MATLAB® syntax for a plot of the expression
t.^2.*cos(t)
which represents an implicitly defined function, is written as
ezpolar('t^2*cos(t)')That is, t^2 is interpreted as t.^2 in the character
vector or string you pass to ezpolar.
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 ezpolar.
fh = @(t) t.^2.*cos(t); ezpolar(fh)
Note that when using function handles, you must use the array power, array multiplication, and
array division operators (.^, .*, ./) since ezpolar
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 k1 and k2 in myfun:
function s = myfun(t,k1,k2) s = sin(k1*t).*cos(k2*t);
then you can use an anonymous function to specify the parameters:
ezpolar(@(t)myfun(t,2,3))