How do i solve this error: Undefined operator '>' for input arguments of type 'timeseries'.

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Rk 2019-1-8

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https://ww2.mathworks.cn/matlabcentral/answers/438751-how-do-i-solve-this-error-undefined-operator-for-input-arguments-of-type-timeseries

评论： Jan 2019-1-16

f1=0;
f2=0;
nb=8;
dt=0.000002;
bsf=50.89;
phi_do=4.7124;
k=6;
x=0.002;
ro=0.0179;
ri=0.0112;
slip=0.01;
wc=157.0796;
phi0=0;
Cdr=0.0012;
Cdi=7.4219e-04;
Cdo=4.5265e-04;
Cd=0.004;
c=5e-6;
kb=1.8978e+12;
for j=1:nb
            phi=(2*pi*(j-1))/nb+wc*dt+phi0+(0.5-rand)*slip;
            phis=bsf*dt+phi_do;
            if j==k && phis>0 && phis<x/ro
                b=1;
            elseif j==k && phis>pi && phis<pi+x/ri
                b=(Cdr+Cdi)/(Cdr-Cdo);
            else
                b=0;
            end  
            d=(xs-xp)*cos(phi)+(ys-yp)*sin(phi)-c-b*Cd;   
            if d>0
                gam=1;
            else
                gam=0;
            end
            f1=f1+gam*abs(d)^1.5*cos(phi);
            f2=f2+gam*abs(d)^1.5*sin(phi);  
fx=kb*f1;
fy=kb*f2;

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madhan ravi 2019-1-8

format your code properly , xs?

Jan 2019-1-16

@Rk: Please do not close questions, if they got answers already.

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Answer 1

Jan 2019-1-8

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https://ww2.mathworks.cn/matlabcentral/answers/438751-how-do-i-solve-this-error-undefined-operator-for-input-arguments-of-type-timeseries#answer_355483

编辑：Jan 2019-1-8

在 MATLAB Online 中打开

The only places, where ">" occurs are:

phis>0, phis>pi, d>0

When I run your code, I get the error message, that xs is undefined. I guess, that you have defined it anywhere else as a timeseries object. The the error message will occur for d>0. If you post the complete error message instead of mentioning a short part only, it would be clear, where the problem occurs.

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Walter Roberson 2019-1-10

What are class(xs), class(xp), class(ys), class(yp) ?

Jan 2019-1-10

Yes, Rk, these variables are defined elsewhere, but we cannot guess how they are defined. Obviously their type causes d to be a timeseries object, such that the >0 operation is not defined. Now it is your turn to find out, what is happening and what you want to achieve.

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