How to make MATLAB's xlim auto yet symmetric around 0?

[poster]

I am making a very simple scatter plot.

pts = [1 1; -2 1];

scatter(pts(:, 1), pts(:, 2));

As we see, the xlim is automatically determined by MATLAB to be from -2 to 1, which is satisfactory to me.

What annoys me is that the origin 0 is not centered. That is the x-axis is asymmetric around 0. In this particular example, I want the x-axis to be from -2 to 2.

I can surely find the largest absolute value, which is 2 in this case, and manually do xlim([-2 2]). Is there a more elegant way, like axis center in my imagination?

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