| Re: [geomesa-users] heatmap question |
It looks OK...In reality a lot of heatmaps have a lot of overlap because they often mirror population density :)
But it is useful when mapping one feature that is very sparse on top of another more common feature as long as its on top and the colors are discernible.
On 07/21/2016 10:47 AM, Emilio Lahr-Vivaz wrote:
We could pretty easily combine the grids. We'd need to create a WPS process to wrap everything up though. How does the multiple heatmap overlay end up looking?
On 07/21/2016 10:43 AM, Andrew Hulbert wrote:
The only thing that I've seen done so far is generating 3 heatmaps from 3 different queries/layers and overlaying them on the same map.
Could we run the Z3 density iterator over 3 different types and then combine the returned grids to create a single grid?
On 07/21/2016 09:38 AM, Emilio Lahr-Vivaz wrote:
Hi Diane,
We don't currently support generating heatmaps from multiple schemas at once, so sharing of catalogs won't matter in that regard. Possibly you could generate heatmaps from multiple layers in a single request, and use alpha transparency to overlay them? I believe that should be possible with SLDs, but I'm not entirely sure.
Thanks,
Emilio
On 07/21/2016 09:24 AM, Diane Griffith wrote:
So building on my question of multiple simple feature types in one geomesa catalog, I was asking that because I was under an assumption if I wanted to use the geomesa server generated heatmap across different simple feature types that they potentially would need to be in the same catalog.
The better question really was can the geomesa heatmap feature generate a heatmap for multiple simple feature types at once? If so how does it have to be structured?
Or does putting it in the same catalog not help and it would require a shared simple feature type schema to support one heat map for all the types of data?
Thanks,
Diane
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