Displaying plots on map, with no property, choosing a colour and a size. about mapboxgl-jupyter HOT 7 CLOSED

@rvlander excellent. I'll add this as a feature for the next release.

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Working on this in this PR - #48

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@rvlander Sounds like you want to be able to display data with just point geometries, no property values, while selecting the default color and size?

I think we should do this by exposing the default Mapbox GL Style Spec property for a data-driven style via a Python option in the mapboxgl library. This would allow you to specify a default circle radius, circle color, or any other style property in the case where there is no property value to parse for a data-driven style.

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@ryanbaumann, yes it is what would be need.

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Adding that we should support a default color profile for all viz types if no color style is passed by the user.

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This should be possible now using the color_default and color_function_type options:

mapboxgl.viz.CircleViz(data, color_function_type="match", color_default="grey")

Need to add:

• Add radius style option to CircleViz
• If colorStops=None generate an empty expression

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Closed in #78

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