GEOGRAPHICAL INFORMATION SYSTEMS

We use GIS tools to inform decision making through geospatial analysis techniques

USE OF GIS FOR SAMPLE DESIGN AND OPERATIONS

GIS tools have proved a valuable resource to support survey design and implementation, and are a key factor to assure high-quality standards. They may be utilized during the sample design, fieldwork operations and field supervision, enabling the following features:

01

SAMPLE DESIGN

Facilitate spatial stratification based on satellite imagery for household surveys
Support segmentation of large area sampling units
Assist the execution and supervision of listing operations
Facilitate stratification by size of production units, type of soil, type of crop, etc. in agricultural surveys
Allow for more efficient measurement of cultivated areas

02

FIELD IMPLEMENTATION

Record building geographical coordinates during the listing operation for supervision purposes
Back up interviewers in the field to locate assigned buildings to be visited, especially in settings where no complete addresses exist

03

FIELD SUPERVISION

Support supervision of field staff by monitoring their location in real time
Enhance the control of unit nonresponse

ANALYSIS & VISUALIZATION

In addition to their use in sample design and field operations, GIS tools can support informed decision making and public policy formulation through a range of geospatial analysis and visualization techniques:

04

POVERTY AND OTHER THEMATIC MAPS

They show the spatial distribution of one or more specific data themes, such as poverty, density of immigrant populations, housing construction characteristics, water quality, predominant crops cultivated, etc. They are typically based on census data and can be used for exploratory spatial data analysis and synthesizing spatial data by revealing patterns and relationships.

05

RISK MAPPING

This tool can help identify geographic zones vulnerable to hazards such as floods, hurricanes, or fires. The perspective allows for prioritizing preventive measures.

06

REMOTE SENSING

Satellite or drone-based sensor technologies can produce geospatial information based on propagated signals. This sensing can be used to identify and classify objects such as water bodies, buildings, and agricultural plots by type of cultivated crops.