Hello, I am very new to this.

I am looking to make a scatter plot with some points plot as black point and some as red according to the indices.

I have a 19 elements array and for the values at indices 2, 4, 6, 9, 13, 15, 16 I want the point to be red and the other ones to be black.

Let A be my 19 elemets array

Let X be my X array

Let indice = [2 4 6 9 13 15 16]

I first wrote this:

scatter(X,A,'*k') and now how can I modify this to get the red points at the proper values?

I guess I need to do a if or for but I am not quite sure how do do this. Can anyone help me out?

Thanks

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