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Mapping Korail Bosti:A case study in GIS
Rebecca StevensonAnjali Sarker
July 18, 2013
What is this?Korail slum(you may have read
the title)
• Population: 40,000• Households: 11,000• 1.5 acres• 40 years old• Right outside of
BRAC!
BRAC Manoshi map of Korail Slum(in 2007)
BRAC Manoshi
18 hours…
4 interns…
2 smartphones…
0 taka…
Korail Slum community resources map
Step 1: Design the questionnaire
• Split into 2 surveys
Step 2: Collect and send the data
TEAM: Rebecca Stevenson, Mahzabeen Mahfuz, Cyrus Khan, Mahmoud
• Engage Manoshi guide: Tapan Bhai• 18 hours over 3 weeks in the slum
• Divided hand-drawn map into sections• Stay together in a group for collection
Step 2: Collect and send the data
TEAM: Raniya Shams, Anjali Sarker, Rebecca Stevenson, Farah Sarwar,
Mahzabeen Mahfuz
Step 3: Store and analyze the data
Step 3: Store and analyze the data
Questions raised by this digital survey map
• Why are the health clinics clustered together in one area?
• Why does bkash center 2:4 have twice as many daily customers as the others?
• Why do areas 3 and 4 have so few students, but twice as many community and political offices?
• Why are the most long-standing clinics the only two that also serve as schools?
In this case, questions are more relevant to us interns, who have no prior experience in the slum. In an area where BRAC has little knowledge, this particular survey would be more useful.
Challenges of digital data collection• Usual data collection challenges
– Unique identifier– Appropriate questions– Informed survey source
• Specific to software– Design of survey
• Make sure answers must be saved
– Dependent on internet for geocode
• Specific to this project– Scheduling– Conditions– Buy-in and understanding of project goals
BEP
Microfinance
HNPP
WASH
CEP
Step 4: Data dissemination
Challenges of digital data analysis, aggregation, and dissemination
• Data storage– Data correction impossible in ODK– Limitation on free data storage
• Data preparation– Multiple surveys made aggregation more time
consuming– Difficulties due to some unsaved answers
• Making sure people pay attention!
Why go digital?Data collection
Why go digital?Data Presentation
• Easily understood information
• Quickly understood information
• Standard framework for BRAC programs
• Community Engagement
Digital maps cannot replace paper maps, but can supplement them
Why go digital?Data Presentation
Combined knowledge
Location specific management
Real time updates
Engage world community
Not just a map, but GIS
Applications of digital mapsNew projects• Community resources• Infrastructure conditions• Health and sanitation conditions• Social society maps• Disaster/crisis managementMaintaining areas• Continually update location of schools in slum and how many
students still attending class• Infrastructure conditions• Health monitoring• Crime reporting• Election monitoring
CEP
WASH
DECC
BEP
HRLS
Gender, Justice, and Diversity
Safe Migration
One Billion RisingCrowd-mapping the world we want
Cheetah Camp, Mumbai. (External to BRAC)
100 social innovators across South Asia
SIL experience in GIS
Technology and Software
• Open Data Kit – Accuracy 10 meters– Cheapest smartphone in Bangladesh: $55.80
(4,350 TK)• GPS tracking device – Accuracy 2-3 meters– $100-$500 (7,795-38,975 TK)
• Open Street Map– Online platform for sharing GIS
• Ushahidi – Platform for mobile surveying– Free and crowdsource
Mapping methods
http://www.google.com/enterprise/mapsearth/products/mapsengine.html
http://www.arcgis.com/features/index.html
http://www.openstreetmap.org/
Methods of data collection• BRAC field workers
• Crowd sourcing – Open Street Map
• Barefoot researchers – Pukar (India) http://pukar.org.in/– Research is a right
• Mobile phone carriers– Work with them to get geocode of non-
smartphones– Connect to mobile survey platforms
• Awaaz.De• Ushahidi
Pukar 2010 anthropometrics study
Recommendations
Make digital mapping a habit