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Quantitative vs. qualitative is a characteristic of the data. A heatmap is always a visualization of quantitative data (a count of events or entities). Your friend's objection that this visualization is "qualitative" is perhaps motivated by his recognition that the underlying data are inconsistently sampled, and that therefore the "data quality" is poor, and ...


Interesting question. It all depends on what you are measuring as a "use of space". It seems that the time the device is asleep is actually the most consistent and constant use of a single space, if you include sedentary states as a use of space. But it sounds like the device won't measure that. But if you discount sedentary states and define that as not ...


Consider the use of Rendering transformation. Check the example Heatmap SLD. with Variable substitution in SLD to pass dynamic values with WMS request parameters.

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