How do I avoid the error message "Index exceeds the number of array elements" in a for loop?

Hello,

I know that maybe the solution might be easier than expected but I am blocked at the moment.

I want to extract all my .csv files from an especific folder. I am able to do what is meant but at the end of the for loop I recieve the error message

"Index exceeds the number of array elements"

I know there should be something related to the indexes on the loop, but I have tried some modifications and I am not able to fix it.

The basic main idea is to extract an especific group of files called Gala which has two variables for the loop.

The first variation is the day, "d',num2str(day(j),'%i')", e.g. d1,d2,etc.. and the second some samples num2str(ii,'%i'), e.g. 1, 2, etc..

After the file is called I store it into a cell called dataBase

I need to do more code after these little lines, therefore it is important for me to solve this

Thanks in advance for your advices. The code is below

day=[1,6,13];

for j = day(1):day(3)

for ii = 1:2

fn = strcat('C:\Users\Documents\Grafics\Apples\Gala d',num2str(day(j),'%i'),{' '},num2str(ii,'%i'),'.csv')

fn=char(fn)

Gala= readtable (fn);

dataBase_Gala{j,ii}=Gala;

end

end

Answer 1

[Jan]

day(1):day(3) is the vector 1:13.

Some other simplifications, which uses a counter to access the days:

folder  = 'C:\Users\Documents\Grafics\Apples\';
dayList = [1, 6, 13];
for j = 1:numel(dayList)
    day = dayList(j);
    for ii = 1:2
        filename = sprintf('Gala d%i %i.csv', day, ii);
        file     = fullfile(folder, filename);
        dataBase_Gala{j, ii} = readtable(file);
    end
end

Answer 2

[Syed Ahson Ali Shah]

the variable in j takes on 13 values.

day=[1,6,13];

for j = day(1):day(3)
    j
end

j = 1

j = 2

j = 3

j = 4

j = 5

j = 6

j = 7

j = 8

j = 9

j = 10

j = 11

j = 12

j = 13

You might do like this:

day=[1,6,13];
for j = day
    j
    % clearly j takes the values you wanted
end

j = 1

j = 6

j = 13