given data of just one date but repeated 20 times how cause i use unique to combine it all in matlab

To combine data of just one date but repeated 20 times in MATLAB, you can use the unique function with the 'stable' option. The 'stable' option preserves the order of the input vector.

Here's an example:

Suppose you have a vector data that contains the same date repeated 20 times:

main.m
data = [1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1];
50 chars
2 lines

To combine this vector into a single value, you can use the unique function as follows:

main.m
combined_data = unique(data, 'stable')
39 chars
2 lines

The output will be:

main.m
combined_data =

     1
24 chars
4 lines

This will combine all the repeated values into a single value of 1.