Documentation

This is machine translation

Translated by
Mouseover text to see original. Click the button below to return to the English verison of the page.

ezplot3

(Not recommended) Easy-to-use 3-D parametric curve plotter

`ezplot3` is not recommended. Use `fplot3` instead.

Syntax

```ezplot3(funx,funy,funz) ezplot3(funx,funy,funz,[tmin,tmax]) ezplot3(...,'animate') ezplot3(axes_handle,...) h = ezplot3(...) ```

Description

`ezplot3(funx,funy,funz)` plots the spatial curve `funx(t)`, `funy(t)`, and `funz(t)` over the default domain 0 < `t` < 2π.

`funx`, `funy`, and `funz` can be function handles or character vectors (see the Tips section).

`ezplot3(funx,funy,funz,[tmin,tmax])` plots the curve `funx(t)`, `funy(t)`, and `funz(t)` over the domain `tmin` < `t` < `tmax`.

`ezplot3(...,'animate')` produces an animated trace of the spatial curve.

`ezplot3(axes_handle,...)` plots into the axes with handle `axes_handle` instead of the current axes (`gca`).

`h = ezplot3(...)` returns the handle to the plotted objects in `h`.

Examples

collapse all

Plot this parametric curve over the domain .

`ezplot3('sin(t)','cos(t)','t',[0,6*pi])`

Tips

Passing the Function as a Character Vector

Array multiplication, division, and exponentiation are always implied in the expression you pass to `ezplot3`. For example, the MATLAB® syntax for a plot of the expression

`x = s./2, y = 2.*s, z = s.^2;`

which represents a parametric function, is written as

`ezplot3('s/2','2*s','s^2')`

That is, `s/2` is interpreted as `s./2` in the character vector you pass to `ezplot3`.

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 `ezplot3`.

```fh1 = @(s) s./2; fh2 = @(s) 2.*s; fh3 = @(s) s.^2; ezplot3(fh1,fh2,fh3)```

Note that when using function handles, you must use the array power, array multiplication, and array division operators (```.^, .*, ./```) since `ezplot3` does not alter the syntax, as in the case with character vector inputs.

If your function has additional parameters, for example `k` in `myfuntk`:

```function s = myfuntk(t,k) s = t.^k.*sin(t);```

then you can use an anonymous function to specify that parameter:

`ezplot3(@cos,@(t)myfuntk(t,1),@sqrt)`