Vector visualization overview

In addition to the common key components which we explored in the last section, we are going to explore how to visualize a vector data layer depending on the layer type in detail.

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Types of vector data

• Polygon
• Line
• Point

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Polygon layers

Represents enclosed planar features

• Land parcels
• Lakes
• Administrative boundaries

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Polygon layers can be visualized as

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• Polygon

Figure 1: Visualization of a polygon

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• 3D Polygon

Figure 2: 3D Polygon visualization of a Polygon layer

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• Line

Figure 3: Visualization of a polygon layer as a line

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Line Layers

Represents linear features on maps.

• Roads
• Rivers

Figure 4: Lines representation

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Point layers

Used to represent discrete locations or individual features.

• Fire hydrants
• Bus stops

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Point

Figure 5: Point visualization

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Heatmap

Figure 6: Heatmap visualization

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Circle

Figure 7: Circle visualization

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Before adding a dataset to map, you can select a layer type as shown in the below figure. You can add a data by clicking add layer button inside an accordion.

Figure 8: Selecting a vector layer type before adding to map at Data tab of Map editor page

Style tab for each layer type

Style tab can provide you various properties to customize visualizing a data layer. So far, the following layer types are available for vector data in GeoHub.

• Polygon: It is default layer type for Polygon data
• 3D Polygon
• Line: It is default layer type for Line data
• Point: It is default layer type for Point data
• Heatmap
• Circle

Filter tab for filtering data

GeoHub offers a feature to filter vector data layer. The steps of filtering is described here.

Label tab for adding information

Additional attribute information can also be added for a vector layer in GeoHub. The steps of adding labels is described here.

Next step

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Let's start from polygon visualization at next section.