Error using plot: Unrecognized property LineWidth for class Line

Question

Ramon Gomez 2022-12-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1879287-error-using-plot-unrecognized-property-linewidth-for-class-line

评论： Voss 2022-12-15

Hello everyone.

I am trying to excecute a code found in the book "Mechatronics and Control of Electromechanical Systems" by Sergey Edward Lyshevski.

The code is in the page 212 and when I write it come the next error: "Error using plot: Unrecognized property LineWidth for class Line"

How can I solve the error?

I appreciate your help!

Here is the code:

th=0:0.01:4*pi;% angular rotor displacement
IM=10; P=4; LDm=0.05; phi=0.3245;
% Balanced three-phase current set
Ias=sqrt(2)*IM*sin(th+phi*pi/3); Ibs=sqrt(2)*IM*sin(th-(2-phi)*pi/3);
Ics=sqrt(2)*IM*sin(th+(2+phi)*pi/3);
% Calculation of the electromagnetic torque
Te=P*LDm*(Ias.*(sin(2*th).*Ias+2*sin(2*th-2*pi/3).*Ibs+2*sin(2*th+2*pi/3).*Ics)+Ibs.*(sin(2*th-4*pi/3).*Ibs+2*sin(2*th).*Ics)+Ics.*sin(2*th+4*pi/3).*Ics)/2;
% Plot the currents applied to the abc windings
plot(th,Ias, 'k− ',th,Ibs, 'b−− ',th,Ics, 'r: ','LineWidth ',2.5); axis([0,4*pi,-15,15]); 
xlabel('Angular Displacement, \theta_r [rad] ', 'FontSize ',18);
title('Phase Currents, {\iti_a_s}, {\iti_b_s} and {\iti_c_s} [A] ', 'FontSize ',18); pause;
% Plot of the torque developed versus the angular displacement
plot(th,Te, 'k− ','LineWidth ',2.5); axis([0,4*pi,0,30]);
xlabel('Angular Displacement, \theta_r [rad] ', 'FontSize ',18);
title('Electromagnetic Torque, {\itT_e} [N-m] ', 'FontSize ',18);

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Answer 1

Voss 2022-12-15

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1879287-error-using-plot-unrecognized-property-linewidth-for-class-line#answer_1129077

编辑：Voss 2022-12-15

在 MATLAB Online 中打开

Use 'LineWidth' instead of 'LineWidth ' with a space on the end.

plot(th,Ias, 'k− ',th,Ibs, 'b−− ',th,Ics, 'r: ','LineWidth ',2.5); axis([0,4*pi,-15,15]);
%                                                         ^ this space should be removed