Index in position 1 is invalid. Array indices must be positive integers or logical value.

I am having a problem with my index variable, and I don't know why the issue is happening.

for ii = 1: length(omegaDArr) % omega_D iterated
    
    omegaD = omegaDArr(ii);
    epsilon = epsilonArr(jj);

    Iter = 1;
    driverCollapseOccurrenceArray = zeros(1, Iter);
    StateTransitionResults = zeros(Iter, 2);
    for kk = 1 : Iter
         xD = rand(N,1)*2*pi; % Init Cond. Driver
         xR1 = rand(N,1)*2*pi; % Init. Cond. Resp1
         xR2 = rand(N,1)*2*pi; % init. Cond. Resp2

         [X, outcome, networkCollapsedFlags, timesChimeraToCollapsed,timesCollapsedToChimera]=changesN_TestChaosMain(kk, N, b, alphaD, omegaD, couplingonset, epsilon, xD, xR1, xR2, NumberWindows, WindowLength, dt);
        
         driverCollapseOccurrenceArray(kk) = networkCollapsedFlags(1); % driver
         
         StateTransitionResults(kk,1) = ~isempty(timesChimeraToCollapsed);
         StateTransitionResults(kk,2) = ~isempty(timesCollapsedToChimera);
    end

this line:

pctCollapseThenChimeraArr = 100*mean(StateTransitionResults(StateTransitionResults(:,2) ,1) );

gives the error message:

Index in position 1 is invalid. Array indices must be positive integers or logical values.

[Ameer Hamza]

Can you explain, when are you trying to do in this line?

pctCollapseThenChimeraArr = 100*mean(StateTransitionResults(StateTransitionResults(:,2) ,1) );

[Samson]

Oh, pardon me, after the loop. see below:

% Average of runs where collapse occurred and chimera did NOT reocccur
    pctCollapseOnlyArr = 100*mean(StateTransitionResults(~StateTransitionResults(:,2) ,1) );
    % Average of runs where collapse occurred and chimera DID reocccur
    pctCollapseThenChimeraArr = 100*mean(StateTransitionResults(StateTransitionResults(:,2) ,1) );
    % Average of runs where NO collapse occurred
    pctNoCollapseArr = 100*mean(~driverCollapseOccurrenceArray);

[Ameer Hamza]

Yes, that is the code you wrote. But what are you trying to do in this line? Are you trying to extract some specific rows?

[Ameer Hamza]

Samson comment posted as answer moved here:

I am trying to extract the columns for that variable

[Ameer Hamza]

If you are trying to extract the column, then you should write it like this

pctCollapseThenChimeraArr = 100*mean(StateTransitionResults(: ,1) );

[Samson]

Thank you so much!. I really appreciate