store the labels in a 150-by-1 matrix called: id1 in matlab

In MATLAB, you can store labels in a matrix using cells.

To create a 150-by-1 matrix called id1 to store labels, you can use the following code:

main.m
id1 = cell(150, 1);
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This will create a matrix with 150 rows and 1 column, where each element can store a label.

To assign a label to a specific element in the id1 matrix, you can use the curly braces {} to access the individual cells. Here's an example of assigning a label to the 5th element:

main.m
id1{5} = 'Label 5';
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You can repeat this process to assign labels to other elements in the matrix.

Note: Cells in MATLAB can store any type of data, including strings (as shown in the example above) or numeric values.

Hope this helps!