[ka-Map-users] Overlay question

[Pg]

> As I understand the
> <polygon> element is a child of a <point> element.

Yes!


> I'm assuming the polygon
> coordinates should be the text node of the <polygon> element.

Yes! The syntax is

  X0 Y0, X1 Y1,...,Xn Yn

The reference system must be the same of the map.

> But what should
> the x and y attributes of <point> contain? Is this the centroid of the
> polygon? What should the attributes be if I'm  drawing a linestring?

The x and y attributes of the point can be selected in any way "near"
the polygon or linestring, doesn't matter if inside or outside. If you
draw only a polygon or a linestring the <point> coordinates are not so
meaningful.

As the point attribute can contain also other elements (eg. an icon
and/or a label describing the polygon) than the the x and y attributes
of the point become the reference to place the icon and the label.

 -Pg