MATLAB: How do you extract certain rows from one matrix thats first column has specific values and create a new matrix containing those rows

MATLABmatricesmatrix

I have a 126120,5 matrix. The first column has values of time. I want to create a new matrix that consists only of the rows that have time increments of 0.01 seconds from the original matrix (0.00s, 0.01s, 0.02s, 0.03s…). How can I go about doing so?
For example: M =
[0.00023 1 2 3 4 5]
[0.007 1 2 3 4 5]
[0.01 1 2 3 4 5]
[0.0127 1 2 3 4 5]
[0.02 1 2 3 4 5]
[0.0245 1 2 3 4 5]
[0.03 1 2 3 4 5]
Mnew =
[0.01 1 2 3 4 5]
[0.02 1 2 3 4 5]
[0.03 1 2 3 4 5]
I know of the command Mnew = M(M(:,1)==0.01,:);
but that is only one row and I don't want to have to do that over and over for each time. Any help would be much appreciated, Thank You!

Best Answer

You can use the function "mod"
M =[0.00023 1 2 3 4 5;
0.007 1 2 3 4 5;
0.01 1 2 3 4 5;
0.0127 1 2 3 4 5
0.02 1 2 3 4 5
0.0245 1 2 3 4 5
0.03 1 2 3 4 5];
Mnew=M(mod(M(:,1),0.01)==0,:);
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