Applies class renaming to all points

Some of the points are repurposed for different data. In this case, the
tooltips were correct, but the dom class itself was outdated.

We now force an update of the class on all items, regardless of whether
they are new or not.
Fix "Attribute is NaN" log errors

If we get a mean of NaN, we should try to continue without too much
error logging, which was occurring when trying to use undefined rad/x/y