Rotate 3D Radiation Pattern

Hi there,

I would like to rotate my radiation pattern. From this:

To this:

I can do the rotation by using the toolbox, by the following:

el = -90:90;
az = -180:180;

newax=roty(90);
pat = rotpat(Y,az,el,newax);

I can't use this toolbox, because I need to have the proper matrix that gives me a radiation pattern pointing towards that direction.

The radiation pattern matrix I would like to rotate has the following format: (181x361)

Any advice?

Thank you in advance.

[KSSV]

Read about Affine transformations

[Matt J]

because I need to have the proper matrix that gives me a radiation pattern pointing towards that direction.

What is "improper" about the matrix given as output by rotpat?