MATLAB: Index in position 1 exceeds array bound (must not exceed 2) error

array boundindex position errormatrixtimer

>> x=rand(5,5)

x =

0.8594 0.8865 0.7127 0.0424 0.8175

0.8055 0.0287 0.5005 0.0714 0.7224

0.5767 0.4899 0.4711 0.5216 0.1499

0.1829 0.1679 0.0596 0.0967 0.6596

0.2399 0.9787 0.6820 0.8181 0.5186

>> t=timer('timerfcn',@(x,y)disp(x(2,2)))

t =

Timer Object: timer-6

Timer Settings

ExecutionMode: singleShot

Period: 1

BusyMode: drop

Running: off

Callbacks

TimerFcn: @(x,y)disp(x(2,2))

ErrorFcn: ''

StartFcn: ''

StopFcn: ''

>> start(t)

Error while evaluating TimerFcn for timer 'timer-6'

Index in position 1 exceeds array bounds (must not exceed 1).

Best Answer

t=timer('timerfcn',@(x,y)disp(x(2,2)) this line is incorrect ,it should have been t=timer('timerfcn',@(x1,y)disp(x(2,2)) instead.

Related Solutions

MATLAB: Index exceeds matrix dimensions,

xPred = sum(wSigmaPts_xmat .* (xPredSigmaPts(:,2:nsp) - repmat(xPredSigmaPts(:,1),1,nsp-1)),2);

xPredSigmaPts is a 6 x 1 double at the time of the error. You cannot take column 2 to nsp of a matrix that only has one column.

xPredSigmaPts = feval(ffun,xSigmaPts(1:states,:),repmat(U(:),1,nsp),xSigmaPts(states+1:states+vNoise,:),dt);

And ffun is ffun1, and ffun1 is

xout = [ 0.01919*x(6)^2 - 0.00051691*x(4)^2 + 0.96268*x(2)*x(4) - 0.013784*x(1)^2;
    0.0012494*x(4)*x(2)^2 - 0.007995*x(6) - 0.031872*x(4) - 1.0196*x(4)*x(1) - 0.001264*x(4)*x(2) - 0.0046864*x(3) + 1.5585e-6*x(4)^3 - 0.0035837;
    5.7303*x(6) - 2.9402*x(3) - 3.0606*x(4) + 1.961*x(4)*x(1) + 0.77732*x(4)*x(2) + 1.2159*x(4)*x(2)^2 + 0.00043617*x(4)^3 - 51.392;
    0.0051138*x(3) + 0.025393*x(6) + 0.053875*x(4) + 0.0039023*x(4)*x(1) + 0.0023632*x(4)*x(2) - 0.0030146*x(4)*x(2)^2 - 1.9436e-6*x(4)^3 + 0.000013716;
    x(4)*cos(x(6));
    x(3)];

That uses the first 6 elements of x no matter how large it is, and returns a 6 x 1 vector. At the time of the error, what is being passed in is 6 x 17.

Perhaps you should be calling ffun1 once for each column ?

MATLAB: Index exceeds matrix dimensions

When your hex code is below 0x80, the length of the string that you get with DEC2BIN is smaller than 8 chars.

Try with that:

 x = hex2dec('7F') ;
 for k = 1 : 8  
    if bitand(x, 2^(8-k))
       disp(b{k}) ;
    else
       disp(a{k}) ;
    end
 end

Cheers,

Cedric

Best Answer

Related Solutions

MATLAB: Index exceeds matrix dimensions,

MATLAB: Index exceeds matrix dimensions

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