Add range_label with unit conversion to isochrone output at the service level

hello!

Right now, when isochrones are created, they don’t contain a categorical column to symbolize by unless used inside of the isolines_layer helper which does this conversion and legend creation for the user behind the scenes.

Request

This ticket is to request that we add the categorical attribute range_label and the unit conversion at the service level so even if this dataset is exported and used with a different mapping library or with different styling that we still provide the pieces needed to create a proper map.

Current blockers

The problem with the not having these fields is that if a user wants to create a map outside of a helper or use a different one, without the range_label column they won’t be able to easily do that. The reason is because even if they do something like an equal interval classification (since there is the numeric data_range column), the legend, no matter which type you use, won’t be correct, not to mention that they would have to know VL to construct the proper ramp and/or create a new string field that converts the ranges to categories and also the conversion.

Here are some visual examples of this blocker:

cc @Jesus89 @elenatorro

[Jesus89]

Let’s update the geojson file (to include the label column) and then close this.

[elenatorro]

Done, added in the drive directory, in both csv and geojson format 👍