geo-bound | Particle Firmware for GPS Tracking

Since the sample above is not enough to have a demonstration, I decided to use one of the dummy data that I used for other leaflet related questions. I hope you do not mind that. Given what you said, you need to create two layers in your map. One for a continuous variable, and the other for a discrete variable. This means that you need to create two sets of colors. As you used, you want to use colorNumeric() for the continuous variable. You want to use colorFactor() for the discrete variable. In my sample code, I create a new discrete variable called group. Once you finish creating the color palettes, you want to draw a map. You need to use addPolygons() twice. Make sure that you use group. This is going to appear in the layer control button on the right upper corner. As far as I know, we cannot display one legend only at the moment. I came across this issue before and concluded that we have no choice at the moment. I hope this demonstration is enough for you to make a progress in your task.