Help with function that plots a specific shape and fills with specific color

Create a MATLAB function called drawShape() that performs the following:

       a. Displays a numbered list of shapes as shown below

       b. Uses the inbuilt MATLAB function input()to request the user to
           i. select a shape from this list, and
          ii. a letter to indicate the color to fill the shape (for example: `r’     for red)

You should decide the dimensions of the shapes.

1. Right angled Triangle

2. Circle

3. Square

for example, drawShape(2,g) should plot a green circle.

The only thing I'm struggling with is ,for example, in drawShape(a,b) , how can the function be written for "a" to pull the specific shape plot, and "b" to fill the shape with a specific color.

Answer 1

[Walter Roberson]

A shape with N sides can be built by taking points 360/N degrees apart on a circle.

When you create a shape, the operation you use will probably have a FaceColor property.

Answer 2

[Image Analyst]

See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_create_a_circle.3F

A triangle can be plotted with plot() or line().

A square can be plotted with plot(), line() or rectangle().

For any of them, you can use fill() or patch() to get solid shapes instead of just the perimeter.