Add possible cause of warning message when clicking "Add active values from..." tool buttons
Mention that the possible cause is due to the data array being floating point.
To test:
- Run ParaView
- Add Wavelet source
- Color by "RTData"
- Open Color Map Editor, click on Interpret Values As Categories.
- You will get a more informative message describing the possible reason that annotations for categorical coloring could not be initialized.
Edited by Cory Quammen