SEZ Lights, Rings and Buffers

sandiegodata.org-sez_lights-1.1.2 Last Update: 2021-09-13T20:27:15

Sums of pixel values representing nighttime light intensit, for buffers and rings around Special Economic Zones.

This dataset provides sums of the pixel values in the nighttime lights data in regions around the SEZs from the World Bank's SEZ dataset. The buffers are a circle for a specified radius around each SEZ, and the rings have a minimum radius of the specific radius, and a maximum radius of (1+sqrt(2)) times larger, so the area of the ring for a radius is equal to the area of the buffer circle.

Here is an example of the buffer and ring for an SEZ in South Korea:

This file can be joined to the SEZ data on the unique_id column. For each SEZ and year of the NTL data, this file includes the sum of the pixel values from the NTL rasters for both the ring and the buffer, and the radius specified in the radius column. The *_count column is the number of non-null pixels in each region.

Example Analysis

See this Jupyter notebook for an example of using this file.

Images

Example of a 5km buffer and the ring around it.

Contacts

• Wrangler Eric Busboom, Civic Knowledge

Resources

• mean_lights. Pixel light sums for buffers and rings around the SEZ.

References

• sez, metapack+http://library.metatab.org/worldbank.org-sez-1.1.1.csv#sez. SEZ Locations and data
• ntl, metapack+http://library.metatab.org/figshare.com-harmonized_ntl-1.1.1.csv. Harmonized Nighttime lights