This does seem confusing; what does the SLD specification say anchor 
point is. I belive anchor point
is defined relative to "the_geom" (ie centroid of a polygon or 
linestring, or the actual point). Try creating
one using the styleFactory if you have to; and then fill in the blanks.

My guess would be Expression x and Expression y are actually:

sb.createAnchorPoint(Expression offsetX, Expression offesetY)

And the main reason to do an expression is so you can do something like sin( 
angle )*distance, cose( angle )*distance where angle and distance
are other attributes of your feature....

Jody


> Hi, I want to plot the values of an attribute of a point shape file at  
> each point.
> I am stumped by:
> AnchorPoint anchorPoint = sb.createAnchorPoint(Expression x, Expression y)
> I want to take the information from "the_geom" and use it in the  
> AnchorPoint expression, but I just can't see it...
> Thax!
>
> gaby
>   


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