loaing data from a sequence of files, why it failed?

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Tmat 2021-8-7

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https://ww2.mathworks.cn/matlabcentral/answers/894247-loaing-data-from-a-sequence-of-files-why-it-failed

编辑： Stephen23 2021-8-8

Hi guys, I'm trying to load data from mat files named "test1.mat",...,"test100.mat". In file "testii.mat", vector Tn has positive values from row (ii-1)*10+1 to row ii*10 and is filled with zeros for any rows before row (ii-1)*10+1. The length of Tn is 10*ii. I wanna store all these positive values of Tn from the 100 mat files in a single vector named allTn. I used the following loop:

clear;
narray=100;
for ii=1:narray
is=num2str(ii);
 name=strcat('test',is);
load(name);
   allTn(((ii-1)*10+1:ii*10)',1)=Tn(((ii-1)*10+1:ii*10)',1); 
    
  
end

However, I got error message "Index in position 1 exceeds array bounds (must not exceed 10)" in the line

allTn(((ii-1)*10+1:ii*10)',1)=Tn(((ii-1)*10+1:ii*10)',1);

I also found that the problem is caused by the fact that the loop index is already equal to 3, but name still equals to 'test1'. This causes the problem as I will be citing elements in Tn that do not exist.

I'm wondering why do I got this message, and how should I fix it? In particular, why name is not updated during the loop?

Thanks!

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Tmat 2021-8-8

@Walter Roberson Thank you very much! I found my problem, that is there is another variable in my test1.mat file named ii, which equals 3. After fixing this, my code could run.