Use the Choropleth Layer sub-widget in a Basic Flat Map to customize map borders.
Procedure
Log on to the DataV console.
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On the My Visualizations page, click Edit on your visualization project.
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On the canvas editor page, click the
icon in the upper-left corner to expand the Asset List. -
Click Map > Basic Flat Map to add the Basic Flat Map widget to the canvas.
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On the Data panel of the Choropleth Layer sub-widget, select Geographic Border GeoJSON Data Interface, and set Data Source Type to API.

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Log on to DataV.GeoAtlas, select the Range Selector, and copy the JSON API for Zhejiang Province.

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Return to the Data configuration panel of the Choropleth Layer.
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Paste the API link into the URL field for the Geographic Border GeoJSON Data Interface.

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Click the
icon in the upper-right corner, and adjust the map scaling and position to preview the custom borders.
