How can I load out the data to array from several specific column number?

I want to load out some specific data from my txt. file to array and I know the column number of data which I want to load out.

EX. column: 20, 86, 150, 235, 375, 568 ...

It's two rows of data file.

I have no idea on how to do.

Thanks for the help!

Answer 1

[Shashi Kiran]

Hi @Evelyn Chen,

You can extract specific columns from the text file using the following approach:

data = load('your_file.txt');
% Specify the columns you want to extract
columns = [20, 86, 150, 235, 375, 568];
% Extract the specified columns from the data
selectedData = data(:, columns);

Just replace 'your_file.txt' with the actual name of your file.

Hope this helps!

[Evelyn Chen]

@Shashi Kiran

Thanks for your help!

On the other hand, I use the readmatrix to load the txt file.

And the window shows error about "Index in position 2 exceeds array bounds. Index must not exceed 7."

Is there anything that I can do to correct it?

[Shashi Kiran]

The Error suggests that the readmatrix is reading only 7 columns from the text file.

If you could share the corresponding text file I would help further.