This guide will walk through how to easily create an O-D to Preset Geography project using StreetLight InSight. This project type allows you to analyze trips between each Zone and a standard geography such as Zip Codes, Census Block Groups, or Traffic Analysis Zones (TAZs) in the US or Dissemination Areas in Canada. The analysis includes using the Zone(s) as origin and Geography as the destination, and vice versa. The project must have at least one Zone Set, and a selected Geography.
The O-D to Preset Geography Project offers a simple way to scan a region, allowing you to visualize where trips are coming from and going to in relation to your selected zone without having to upload large shapefiles containing ZIP Codes, Census Blocks or TAZs. Some of the benefits of the O-D to Preset Geography Project are that it’s optimized to quickly scan and return results faster than a standard O-D Project, and it allows you to analyze zones that might be outside your regional boundary. For example, if you’re studying trips coming to and from a location in Chicago, and your subscription boundary only allows you to do work within the state of Illinois, the O-D to Preset Geography results will return any zones with corresponding trips in the state of Indiana.
Step 1: Create your Zones
1a. Go to the Manage Travel Projects section by clicking the tab on the left. Then click “Add Zone Set.” Learn more how to upload or draw a Polygon Zone or a Line Segment Zone.
1b. For this example, we’ll create a Zone that covers the southbound portion of the 110 freeway in Los Angeles, California. We’ll do this by adding a Zone Set and drawing a polygon Zone over a portion of the 110 just south of downtown Los Angeles. We’ll make sure to mark the Zone as “Pass-Through” and will include a direction setting to capture only southbound trips. To learn more about when to use direction, check out our Product guide [LINK: All About Direction]
Note: OD to Preset Geography projects can be set up with polygon pass-through Zones as we’ve done in this example, or with line segment zones, or with area Zones. Area Zones might include a specific location like a neighborhood, park or airport and will not be pass-through.
1c. Name your Zone Set and click “Save”. Your Zone Set can now be viewed in the Manage Zone Sets tab within your account.
Pro Tip: You may also include multiple Zones in a Zone Set when an O-D to Preset Geography Project.
Step 2: Setup your Project
2a. Navigate to the “Create Projects” tab.
2b. Select a name for your Project, then select “O-D to Preset Geography” as the selected Project type. If you don’t see this an an option in your available Project types, contact your StreetLight InSight representative. Fill in the remaining fields for Type of Travel, Data Source Type, and Calibration Type depending on your project needs. In this case we’ll leave the default settings that are automatically populated once we select the Project Type.
2c. Select your Zone Set from the Available Zones. In this case we’ll select 110 SB and move it into our “Selected Zone Set(s)” box. Below the Selected Zone Sets box, you’ll be able to select which Geography you’d like to work with. You’ll have the option to select TAZ, Census Block Group and Zip Code if you’re running Projects in the US, and Dissemination Area if you’re running Projects in Canada.
For this example we’ll select Zip Codes as our Preset Geography (Zip Codes are the largest option, while Census Block groups usually provide the most granularity). In this case, by selecting the 110 SB Zone Set, we’ll be able to view our Zone as both and Origin and a Destination when visualizing the Project with associated Zip Codes. You always have the option to include more than one Zone Set in a Project.
2d. Add any additional Project settings.
2e. Click “confirm” and your Project will start running.
Step 3: Visualize and Download your Results
3a. Navigate to the Interactive Visualizations tool. For a full overview of how to use Interactive Visualizations, check out our Interactive Visualizations guide [insert link].
3b. Once in the Interactive Visualizations tool, select your OD to Preset Geography Project from the list of available Projects.
3c. Your project will load your Zone of interest including all of your Preset Geographies you selected for your project. In this case we’ll see our 110 SB Zone and all the associated Zip Codes.
3d. Add filters to select your Day Type and Day Part of interest, then specify whether you want to see your selected Zone as an Origin or Destination. When your Zone is set to the Origin, the map will display all Zip Codes that are the most common Destinations. See below for an example where Zip Codes in the southern part of Los Angeles light up on the map.
When your Zone is set to the Destination, the map will display all Zip Codes that are the most common Origins. See below for an example where Zip Codes around downtown Los Angeles light up on the map.
3e. Navigate to the All Projects and click the download button to receive a Zip file containing your Project Metrics. Results will contain a .csv file including all the Origin and Destination Zip Codes.
Pro Tip: Project downloads will not include a shapefile covering your associated preset geography. If you're looking for the standard 2010 TAZ, Zip Code or Census Block Group shapefiles, you can obtain them from the TIGER/Line shapefiles provided on the census website: https://www.census.gov/geo/maps-data/data/tiger-line.html. When downloading, be sure to select files from 2010. These can then be joined to your StreetLight InSight Metrics using a GIS tool.