Chapter 7 –
Basics of 3D GIS-
In ArcGIS web maps are referred to as web scenes or 3D scenes. GIS is a critical component for research frontiers and hot spots including digital cities, geodesign, indoor mapping, AEC, VR, AR, and the metaverse. I think this is all really cool because this is becoming our future very quickly.
A web map can have many layers.
Photorealistic: Aims to recreate reality using photos to texture features. These types of scenes often use imagery as the texture and are extremely well suited for showing visible objects such as a city.
Cartographic: Takes 2D thematic mapping techniques and moves them into 3D. These types of scenes often use attribute-driven symbols to display physical, abstract, or invisible features such as population density
Main elements in scenes:
Surfaces: Surfaces are continuous measurements, typically elevation with one value for a given x,y, location.
Feature: Live on, above, or below the surfaces. They can be 2D layers or 3D scene layers.
Textures: Provide exterior or interior covers of your 3D features.
Atmospheric effects: Examples include lighting and fog.
Other key definitions:
Building scene layers: Building scene layers allow you to visualize complex digital models of buildings and interact with all the components of the building.
Overviews: Optional layer that allows you to view the 3D building as a single layer.
Discipline: Combines category layers into the various work disciplines of a building, such as architectural.
Category layer: Represents individual categories such as windows or walls.
Filter: Allows you to view details in complex buildings.
3D across ArcGIS- ArcGIS provides a suite of 3D products to support the creation, visualization, analysis, and sharing of 3D scenes.
ArcGIS Pro: A desktop app that provides comprehensive tools for managing 2D and 3D data and authoring and sharing 2D maps or 3D scenes.
ArcGIS CityEngine: A desktop app that provides advanced 3D creation capabilities.
ArcGIS Online and ArcGIS Enterprise: Web GIS platforms that can host scene layers for online and on-premises 3D web GIS apps, offer scene viewer.
For this, I would create a web scene using 3D objects and symbols. This could help with the distribution of students who are in a certain school district. Some of the school districts are really big and others are really small. Creating a web scene would allow me to plan the school districts differently and see how it would look in a realistic setting. You can even add trees and walls.