Matrix Indexing Question in Matlab [duplicate]

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Can someone explain this example of deleting elements from a matrix in MATLAB?

i have some trouble in matlab and please help me suppose we have this matrices

X =

16 2 13
5 11 8
9 7 12
4 14 1

i want to understand how this command delete elements from this matrices and what will be as a result

X(2:2:10) = []

thanks very much i add also result of this command

16 9 2 7 13 12 1

but it is unclear for me

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When you supply just one index (2:2:10), Matlab treats is as in index into all of the entries ordered by each row, then by column. So you are removing the 2nd (row 2 column 1) entry, the 4th (row 4 column 1 entry), the 6th (row 2 column 2) entry, the 8th (row 4, column 2) entry and then the 10th (row 2 column 3) element.

To be super clear, if you say X(1:5) you'll get [16, 5, 9, 4, 2] back.

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it will start from the 2 location and advances with increment 2 till 10 (2, 4, 6, 8, 10). And every time it deletes the element from the calculated location (2, 4, 6, 8, 10).