Update colormaps to support "category" colormaps
As a first test this will be used for the cloud top height and cloud top temperature products. These products use the same colormap and this colormap is made up of color "groups" (discrete colors). Right now the client is not given enough information to "label" these colors. In the meeting yesterday it was discussed that we might need to have logic for the real limits of the data (ex. valid_range
) and a concept of tick labels versus probe labels. For example, in the cloud top height case the groups are actually ranges of heights so "-300m to 1000m" (for example). This is maybe OK in the probe text, but as a label on the colorbar it might be too long. I'm not sure what it should be on the colorbar, but that is something to keep in mind as a future necessity.
Additionally, the topic of a "legend" came up. This would be a series of boxes with each category color and the associated label. This could be used to distinguish between continuous products and category products.