In this step, you will turn the Census Blocks layer from a 2D layer into a 3D layer. You will extrude the height of each block polygon based on an attribute field, to show the total population in each. You will do this by following the next steps:
- In the Contents pane, select the Census Blocks layer. Then, drag and drop it from the 2D Layers category to the 3D Layers category.
When you do this, you may notice that parts of the Census Block outlines disappear. This is because some of the features contained in the 3D layer are now below the elevation surface.
- Make sure you still have the Census Blocks layer selected, then click on the Appearance tab on the Feature Layer contextual tab.
- In the Extrusion group tab, click on the small drop-down arrow below Type and select Base Height, as illustrated in the following screenshot:
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