Raster Dataset
Tags
population, demography, Puerto Rico
Provide detailed population estimates for research in humanitarian, disaster response, sustainability, and infrastructure planning fields.
The High Resolution Settlement Layer (HRSL) provides estimates of human population distribution at a resolution of 1 arc-second (approximately 30m) for the year 2015. The population estimates are based on recent census data and high-resolution (0.5m) satellite imagery from DigitalGlobe. The population grids provide detailed delineation of settlements in both urban and rural areas. The data were developed using computer vision techniques to classify blocks of optical satellite data as settled (containing buildings) or not. Proportional allocation was used to distribute population data from subnational census data to the settlement extents. The data are distributed as GeoTIFF files. The Population GeoTIFF represents population estimates (in persons).
Connectivity Lab at Facebook. Center for International Earth Science Information Network - CIESIN - Columbia University. Source imagery provided by DigitalGlobe. Census data collected as part of the Gridded Population of the World project.
This work is licensed under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0). Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
Extent
| West | -67.958665 | East | -64.687554 |
| North | 18.517255 | South | 17.670033 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Recommended citation: Facebook Connectivity Lab and Center for International Earth Science Information Network - CIESIN - Columbia University. 2016. High Resolution Settlement Layer (HRSL). Source Imagery © 2016 DigitalGlobe, Inc. Accessed [DAY MONTH YEAR]
Connectivity Lab at Facebook. Center for International Earth Science Information Network - CIESIN - Columbia University. Source imagery provided by DigitalGlobe. Census data collected as part of the Gridded Population of the World project.
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CIESIN strives to disseminate quality Data and to provide accurate metadata and documentation consistent with best practices and accepted standards. This includes appropriate version control and archiving so that users understand changes to Data and can obtain previous versions for comparison purposes. Nevertheless, CIESIN, Columbia University, and their sponsors offer Data on a where is, as is basis and do not offer an express or implied warranty regarding quality, applicability, or accuracy.
This work is licensed under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0). Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
This work is licensed under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0). Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
Proportion of the country included in the analysis
Recall of computer vision classification used to identify settlements in the imagery. Recall or sensitivity, is the fraction of relevant instances that are retrieved. Recall = TP / (TP + FN) where TP = true positive, FP = false positive, FN = false negative
Precision of computer vision classification used to identify settlements in the imagery. Precision, or positive predictive value, is the fraction of retrieved instances that are relevant in the classification. Precision = TP / (TP + FP) where TP = true positive, FP = false positive, FN = false negative
Accuracy of computer vision classification used to identify settlements in the imagery. Accuracy = TP + TN / (TP + TN + FP + FN) where TP = true positive, TN = true negative, FP = false positive, FN = false negative
DigtalGlobe Basemap +Vivid http://explore.digitalglobe.com/Basemap-Vivid.html
Gridded Population of the World, version 4 (GPWv4) input census data. http://sedac.ciesin.columbia.edu/gpw
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