[visad] label table


I am encountering a problem with the label table that defines tick
mark labels.  I create a 2D plot as usual, and then directly after I
have the line:

Hashtable table = this.xMap.getAxisScale().getLabelTable();

The only thing in the table is zero (0.0 = 0).  In fact, even when I
do a setLabelAllTicks(true) the label table still shows up as only
zero.  Any clue what is going on here?  Do I have to wait for some
operation to finish before getting the label table?