This is REVISION’s General Guide. Visit a Specific Guide if you’re interested in understanding neighborhood change associated with gentrification, neighborhood transportation dynamics or how to use REVISION for introductory urban planning courses.
Prepared by: The UCLA Ralph and Goldy Lewis Center for Regional Policy Studies
Last Updated February 24th, 2016
User Guide Table of Contents
REVISION has tools you can use to answer questions you already have about regional growth strategy, neighborhood dynamics, and sustainability planning. REVISION is available for the SCAG Region (Imperial, Los Angeles, Orange, Riverside, San Bernardino, and Ventura Counties).
What you can do with it
Visualize regional and neighborhood data on livability, mobility, accessibility, employment, and other planning metrics and indicators. Navigate using drag & zoom or search. Click buttons to toggle layers on or off.
See details on demographics, socio-economics, mobility, accessibility, housing affordability, environmental impacts, transit and bicycle networks for areas of about 3000 people. REVISION has a unique Area Report for over 10,000 block groups.
See detailed information for a specific property, including assessor information and crowd-sourced parking information. As of January 2016, Property reports are available for Los Angeles County only.
See change over time for American Community Survey variables in areas of about 600 to 3000 people (Census Block Groups)
Q: Where are people living in very crowded housing conditions?
A: Using the Trends tool, select “Tenure by Occupants per Room”i “Renter Occupied” and “2.01+”. Choose a year, e.g. “2010-2014”, and then click Visualize. Areas that show darker colors of blue have a higher percentage of their renting population living in very crowded conditions.
Q: Are people in my neighborhood living in crowded housing conditions?
A: Search for or navigate to your neighborhood on the Map or Trends tools. Click on your neighborhood. Select “Area Report” in the popup infobubble. In the Area Report, scroll to “Number of Occupants per Room by Tenure” and look at the chart, comparing values for renter-occupied and owner-occupied housing in the block group for “1.01 to 1.50”, “1.51 to 2.0”, and “2.01 or more” with the countywide averages for owner-occupied and renter-occupied housing. You can click the hamburger menu () to download this chart.
Q: Where are more people living in crowded conditions now than they were a few years ago?
A: Using the Trends tool, select “Tenure by Occupants per Room” “Renter Occupied” and “2.01+”. Choose a past year, e.g. “2006-2010”, and then a more recent year, e.g. “2010-2014”. Click Visualize. Areas that show darker shades of red indicate statistically significant negative change in the proportion of renting households in the block group that have 2.01 or more people per room. Areas that show darker shades of green indicate statistically significant negative change in the proportion of renting households in the block group that have 2.01 or more people per room.
Q: Is my neighborhood “gentrifying”?
A: See our detailed guidance on how to use REVISION to understand neighborhood changes associated with gentrification.
Q: Are people in my neighborhood actually using transit to get the work?
A: See our detailed guidance on how to use REVISION to understand neighborhood transportation dynamics.
Click on the top banner to view our four tabs while remaining at the same view level.
Type in addresses, cities, zip codes or intersections to zoom to your study area of choice.
Select the Help button on the Menu Bar to view our User Guide.
The map window is on the right side of the page.
Click on the Basemaps button to select over 12 different basemaps to be placed under the map layers to provide streets, geographic, or aerial context.
Zoom in and out by clicking on the +/- buttons on the top left buttons on the map.
Click and hold to view different areas.
Select the home button to pan to your approximate location.
Click on areas to open the details page for an in-depth look at the data.
Layer selection is located at the left side of the screen below the legend window. Click on the layer to turn it on/off.
Select the i bubble within a layer to read what the map shows. Select More>> to view the data documentation of the specific layer.
The legend is located at the left side of the screen above the layers window. The activated layers will appear.
Select the field you would like to compare or visualize. Depending on the field you select you may have to narrow down your selection.
Second, select the year you want to serve as your base. We use the US Census American Community Survey 5-year datasets.
With a one year selection, a map of propertions is produced.
With a two-year comparison a map showing the statistically significant positive and negative changes amongst the years is presented at the 90%, 95%, and 99% two-tailed confidence interval levels.
A map will be produced showing the positive and negative change the variable has faced throughout the time periods via statistical significance testing (comparing) or values (visualizing single variable).
You can export a zipped folder with a shapefile version of a single visualized variable.
The Area page shows data we have presented in the map portion of this application in a printable format of charts, and values. The report is separated into the following five sections: Geography, ACS 2009-2013, Mobility Accessibility, Livability, and Land Use.
Our interactive charts were created with Highcharts. You have the ability to hover or select sections of our charts to show percentages, and values. We have also included a download capability for each chart that allows you to save the chart as a jpeg svg, png, and pdf.
Some of our values will be colorful or black. The colorful values represent levels (green high and red low). Our black values represent general terms. We have provided two examples below:
The Assessor’s Report is a mini-report showing parcel data charts, and values. This page is separated into five sections: Geography, Land Use, Building Characteristics, and the Parking Inventory Tool.
Users can add additional data to our parking information by selected the Add/Edit Data button and inputting appropriate text or values in the fields below.