Transpose X-Y not fully working in Plot with elevation (field data from file)

[Angus Yeh]

When switching between plots, the transposed x-y of field data will revert back, but the tick box still shown incorrectly as transposed.

• actual transpose not remembered?
• tick box of transpose, remembered, but not reflecting correctly in plot.

[Angus Yeh]

Fix Issue #28 regarding transpose x-y repeatedly upon getXYData(), which was called when switching between plots etc.

→ <<cset d596e8aba1ae>>

[Angus Yeh]

Fix bug introduced in commit d596e8 when fixing Issue #28.

→ <<cset 47cbd88f6415>>