DATASETS
Movement Distribution Maps
Movement Distribution Maps show the range of movement of people away from the area where they live on a daily basis. These maps are useful for projects focused on transportation, tourism, displacement, and other areas.
Download from HDX
Key Features
Differential privacy
Differential privacy minimizes risk of re-identification of individual data. Applying this framework takes into account the sensitivity of the data and adds noise proportionally.Daily observations
Each metric in this data set is produced for a given administrative region once per day.Publicly available
This data is publicly available for 140+ countries on the Humanitarian Data Exchange.
-
Methodology
Step 1: Assign people to geographic areas and drop small counts
We assign people to geographic areas based on their typical nighttime location and omit areas where few people live.Step 2: Calculate movement distribution
We quantify how much people move around by selecting a random location update for each person during the day, and determining how far away that is from their typical nighttime location.Step 3: Assign Distance Categories
Assign Distance Categories We calculate the percentage of people in each of four distance categories based on how far they travel from home on a given day, including 0km, 0-10km, 10-100km and 100km+.Step 4: Add noise
We calculate an appropriate amount of noise to add to the total tiles visited for each region to ensure it is effectively impossible to re-identify any individual.RESOURCES
Using Movement Distribution Maps
These maps include daily observations starting in December 2022 and are refreshed monthly.
Download from the Humanitarian Data Exchange