How to extract the shape of polar plot from matlab

Hello

I have a polar plot of with R ranging from -3 to 3 values.

How can I extract the shape of the polar plot as an image? or atleast the area under the shape.

Thanks.

[KSSV]

Read about saveas, save.

[Mohanad Alkhodari]

I mean as an image array that I can process further, not as a .png plot

[KSSV]

Sow how the plot is.

[Mohanad Alkhodari]

Here it is

I want to extract the polar plot as a 2D image.

[Mohanad Alkhodari]

filled with 1's in the middle, and 0s in the outter

[KSSV]

You have a matrix? So use imwrite.

[Mohanad Alkhodari]

What I have is theta angles and R values.

The polar plot retains a shape. I want to get this shape generated by the polar as an image or atleast location of the points in xy plane.

pol2cart does not work properly due to having negative values in the polar. The shape is missed up