In the map, there are 3 layers.
- The first 'CartoDB.VOyagerNoLabels' is not clear? Could this be generated through an argument in the function? It could even be the same as the legend.title? In my example, it would probably be 'Median Household Income'
- The second 'Labels' isn't clear - this could be changed to 'Geographic locations' or something to indicate that they are location/jurisdiction-based labels?
- The third 'Population' may be better to be population density? Since tracts are generally based on population numbers so that information may not be as useful to provide?
In the map, there are 3 layers.