__scatter__.m: Fix handling of NaNs in marker size param

[Andreas Weber]

Dear maintainers,

I figured out that currently scatter doesn't remove datapoints with NaNs
in the marker size vector. An example:

x = [1 2 3 4];
y = [1 1 1 1];
s = [20 60 40 120];

scatter(x, y, s, "red");
hold on

ix = 2;
x(ix) = y(ix) = s(ix) = NaN

scatter(x, y+1, s, "blue");
hold off
axis([0 5 0 3])

As you can see the NaN is just removed from x and y.

Can I push the attached patch which should fix this or am I missing
something?
Regards Andy

__scatter__fix_NaNs_in_S.patch
Description: Text Data