Firefly Cartography

10 thoughts on “Firefly Cartography”

  1. Hi John,
    This is a great article and I’m trying it out. I’m stuck on ‘Glows are a radial gradient’. I can create a similar glow around points using layered symbology similar to the polygon glow, but is there a way to apply a radial gradient to a point layer? (in ArcGIS Pro or ArcMap 10).


      1. That makes sense. I’ve never made custom markers, but I’m going to try it out.

        I found that point gradient in pro, but you’re right. You can set one end to No Color, but it shows up as grey. I’d guess Photoshop would do a better job rendering than Arc anyway.



  2. Hey John,
    I really love your work. It inspired me to do a firefly map as well. I really like your glowing dots and I’m wondering if you have a qualitative version as well as the quantitative ones you linked above?
    I am going to try to make my own but my photoshop skills are pretty weak.

    Thanks for sharing your amazing cartography with us!


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