Axis location should actually go through a series of steps
X Axis Location
1) bottom of plot region
2) top of plot region
3) below bottom axis (increase border if needed)
4) above top axis (increase border if needed)
Y Axis Locations
1) left of plot region
2) right of plot region
3) outside left axis (increase border if needed)
4) outside right axis (increase border if needed)
X Axis Location hint key
Decision to create a new transform or re-use an existing
transform should follow the following steps
1) Use transform from same LayerStack
2) Use transform from same JPlotPane
3) Create a new transform
to use existing transform
1) both must be space or both time (test cant be defeated)
2) must have units that are convertable to existing transform
3) must have identical units
X Transform hint key