how to draw multiple circles at the same (lat,long) ?

[pradeep arumalla]

Hi there , I have a situation where I have to draw small circles at a particular (latitude,longitude), but I have them overlapping each other, and the last circle is only seen, and the others get hidden below the last one, is there an example I can see somewhere, please advice

Thanks

Pradeep

[Curran]

Hi Pradeep,

One thing you could try is to make the circles semi-transparent, by setting the fill-opacity attribute on the circles to a value between 0 and 1, say 0.5. That way, the points with many overlapping circles will appear darker. I used this approach in a map example Migrant Deaths over Time. It's not perfect, though, because after a certain number of overlapping circles you can't tell if more are added.

Another approach would be to count the number of circles that overlap at a particular location, then draw a bigger circle representing all of them, sized proportionately to the count.

Best regards,

Curran

[Frank Guerino]

Another option is to use a Force Directed Graph.  This will get the circles to "cluster" around a charting point (Latitude, Longitude).  Think of it as a different set of clustered Bubble Charts at every charting point, on the map.

My Best,

Frank

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