exit from a nested while loop after having set its index to a given value

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Riccardo Tronconi
编辑： Cris LaPierre 2021-6-9
I would like to exit from a nested while loop with return but before I would like to set my index to a given value as it follows:
function [H12] = samehorizon(F1,F2)
%UNTITLED Summary of this function goes here
% Il counter non si azzera mai e non riesco a incrementare l'indice i
alltime= [F1{:,1};F2{:,1}];
t1= min(alltime);
t2= max (alltime);
thor= t1: seconds(1):t2;
thor=thor';
thor=array2table(thor);
A= zeros(height(thor), 7);
H12= array2table(A);
H12.A1 = NaT(height(thor),1,'Format', 'dd-MMM-yyyy HH:mm:ss.SSSSSSSSS' );
prova=1;
for i=1:height(thor)
j=prova;
counter2=0;
Xtot2=0;
Ytot2=0;
H12(i,1)= thor(i,1);
H12(i,5)= F2(1,2);
while j <=height(F2)
if j== height(F2)
break
end
if (thor{i,1} - F2{j,1}) > duration('00:00:02.000000000')
prova=j-3;
break
end
if thor{i,1} - F2{j,1} <= duration('00:00:01.000000000')
Xtot2= Xtot2 + F2{j,3};
Ytot2= Ytot2 + F2{j,4};
counter2= counter2+1;
Xmean2 = (Xtot2/counter2);
Ymean2= (Ytot2/counter2);
H12{i,6}= Xmean2;
H12{i,7}= Ymean2;
end
j=j+1;
end
end
end
The error is: Index in position 1 is invalid. Array indices must be positive integers or logical values. referred to this line. In fact, prova always is equal to one...

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Cris LaPierre
Cris LaPierre 2021-6-8
Ran in:
We don't have enough data to run your example. However, the error message has to do with how you are indexing height. It would appear either thor or F2 are not a valid index.
a = 1:3;
% valid
a(1)
ans = 1
% invalid
a(1.5)
Array indices must be positive integers or logical values.
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Cris LaPierre
Cris LaPierre 2021-6-9
That is may be what you intended, but not what is happening. I included a try-catch to see when the error is occuring. Here are the results.
i = 5
j = -2
thor{i,1} = 05-Mar-2021 11:41:40.619605504
F2{j,1} =
Error using Untitled>samehorizon (line 114) % (this is my test script)
Index in position 1 is invalid. Array indices must be positive integers or logical values.
Cris LaPierre
Cris LaPierre 2021-6-9
编辑：Cris LaPierre 2021-6-9
Ok, here are some more details. Right before the error happens, here are the values:
i=3
j=79328
prova=1
counter2=79321
I've attached the full list.

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