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

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Dev Chhatbar
Dev Chhatbar 2022-8-5
回答： Jan 2022-8-5
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.

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回答（1 个）

Jan
Jan 2022-8-5
rotate is a built-in function: https://www.mathworks.com/help/matlab/ref/rotate.html
Use another name for your function.

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