Currently, the axes do not have any API for this. We do have plans to enhance our axes in a few directions, one of which is to allow the users to have information about the actual categories in the axis and the data points associated with each category. However, at the moment we don't have this.
One approach would be look at the series associated with the axis, and make a set of the categories. This, obviously does not use purely the axis object.
Another approach would be to find the visible
visual elements in the axis - Rectangle elements are ticks, TextBlock elements are labels (or ContentPresenters, if you are using a LabelTemplate). Note, there is one ContentPresenter used for measurement purposes only.
Sam, if this is related to the other issues I have been helping with
, Serious issue trying to apply adaptive stepping to LinearAxis / RadCartesianChart
, URGENT: Need help calculating optimal MajorStep on LinearAxis (Y-Axis)
I must say that the second approach is inapplicable and the first is just not as good as the proposal I have made in ticket #882350
I hope this information helps. Perhaps you can explain what you need as a final result, so that we can give an even better approach. Let us know if you need more information.
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