i'm getting an error that inputs should be scaler on "t=linspace(0,t_flight,30);"

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Mahmoud Chawki 2021-4-21

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https://ww2.mathworks.cn/matlabcentral/answers/808925-i-m-getting-an-error-that-inputs-should-be-scaler-on-t-linspace-0-t_flight-30

评论： Jan 2021-4-21

       v0=app.InitialvelocityEditField.Value;
            y0=app.InitialheightEditField.Value;
            theta=app.InitialangleEditField.Value;
            g=app.gEditField.Value;
            x0=0;
            b=v0*sin(pi*(theta/180));
            a=-g/2;
            c=y0;
            t_flight=(-b-sqrt(b^2-4*a*c))/(2*a);
            t_flight=app.FlighttimeEditField.Value;
            range=v0*cos(pi*(theta/180))*t_flight;
            range=app.DistancetraveledEditField.Value;
            t=linspace(0,t_flight,30);
            xdot0=v0*cos(pi*(theta/180));
            ydot0=v0*sin(pi*(theta/180));
            m_y=y0+(v0.^2)*(sin(pi*(theta/180)))^2/(2*g);
            m_y=app.maximumheightEditField.Value;
            x=x0+xdot0*t;
            y=y0+ydot0*t-(g/2)*t;
            plot(app.UIAxes,x,y)
            legend(app.UIAxes,'projectile')