Getitng error suggesting that I should "Use rotate(app, ...) to call this function.". How should I format my code?

Hi,

This is what my code for the function "Rotate" looks like:

The error I get here is: Use app as the first argument for 'rotate'.

function o = rotate(centre, verts, theta)

R = [cosd(theta) -sind(theta) cosd(theta)];

c = centre - vertsl

c = c*R;

o = centre + c;

end

I get an error suggesting that I should "Use rotate(app, ...) to call this function.". How can I fix this? It's not running.

This is what the code looks when I call it under the callback function of the buttton:

% Do the rotation of the circles

verts = rotate(root, verts, theta);

sc1_loc = rotate(root, [root(1) + h, root(2)], theta);

sc2_loc = rotate(root, [root(1) - h, root(2)], theta);

bc1_loc = rotate(root, [root(1), root(2) + k], theta);

bc2_loc = rotate(root, [root(1), root(2) - k], theta);

sc1_loc_straight = rotate(root, [root(1) + h, root(2)], 0);

sc2_loc_straight = rotate(root, [root(1) - h, root(2)], 0);

bc1_loc_straight = rotate(root, [root(1), root(2) + k], 0);

bc2_loc_straight = rotate(root, [root(1), root(2) - k], 0);

I am very new to using Matlab so please excuse any inconveniences caused.

Thanks.

Answer 1

[Jan]

rotate is a built-in function: https://www.mathworks.com/help/matlab/ref/rotate.html

Use another name for your function.