Visualization of Spatial Point Data
Spatial point data refers to data that is connected to one point in space, often the earth. Therefore, it's common in earth sciences, when data is measured at different locations, but e.g., geo-tagged social media content fits the definition too. Visualization of this data type depends on data attributes, such as uni- or multivariate, quantitative or categorical, and also tasks, as can be seen from dot maps (density is important) and bubble maps (value is important). An interactive visualization leads to more challenges, because e.g., glyphs need to be merged/replaced depending on the current zoom level.
Provide a systematic overview of visualization approaches for spatial point data.
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