[Feature Request]: Use a config option to display labels instead of values in the tooltip

[wadhwamatic]

Provide a clear and concise description of what you want to happen.

In many cases, admin_level_data layers represent categorical variables. For example, in RBD, the ifpri_conflict_2023 layer uses the data field ACI_value which range from 1-4. The numeric values have a concept of ranking, but not of a real value.

When a user clicks on the map, the tooltip shows the numeric value (i.e. '1', '2', '3', '4'). I want to be able to optionally configure admin_level_data to use label instead of value in the tooltip. We can do this using feature_info_props by adding an attribute such as source. See the example below

    "feature_info_props": {
      "ACI_value": {
        "type": "string",
        "source": "label",
        "dataTitle": "Classification"
      }, 

This would then make use of the label associated with each value configured in the legend of this layer:

    "legend": [
      {
        "label": "Low / Inactive",
        "value": 1,
        "color": "#e6e6e6"
      },
      {
        "label": "Turbulent",
        "value": 2,
        "color": "#1f77b3"
      },
      {
        "label": "High",
        "value": 3,
        "color": "#f4a582"
      },
      {
        "label": "Extreme",
        "value": 4,
        "color": "#e51a19"
      }
    ]

The change mentioned above should show this:

Mali, Gao, Menaka
IFPRI / ACLED Conflict Analysis - 2023
Classification: Extreme

A side note - the term feature_info_props is pretty abstract. If we can look into changing this to tooltip or something more clear, that would be appreciated too!

Is there anything else you can add about the proposal? You might want to link to related issues here, if you haven't already.

No response

[wadhwamatic]

The RBD configuration mentioned above is in #1189

[gislawill]

Example for Will to reference later