20002010 11521 Spatial Database Management and Advanced GIS Final Presentation Group Members Amy Jacobi Eric Schultheis Nse Umoh Rob Goodspeed Samira Thomas Prof Joseph Ferreira ID: 584508
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Slide1
How Did Metro Boston Grow?
2000-2010
11.521 – Spatial Database Management and Advanced GIS
Final Presentation
Group
Members: Amy Jacobi, Eric Schultheis,
Nse
Umoh
, Rob Goodspeed, Samira
Thomas
Prof. Joseph FerreiraSlide2
Presentation Outline
Project Goals
Process
Methodology
Results
ConclusionsSlide3
Project goalsSlide4
Project
Goals
Evaluate
growth patterns in the metro-Boston between 2000 and 2010.
Compare obser
ved growth in the last decade with the
MetroFuture scenarios: Let It Be and Winds
of Change.Understand the effect of observed growth on greenhouse gas emissions by private vehicles.Slide5
ProcessSlide6
Process Map
Land
Use Polygons
(1999 & 2005)
Census
Block Populations
‘Non-Residential’ Block
Finder
Allocation
Model
Allocation
to
250m
Grid
MetroFuture
Scenarios
(TAZs)
Results
Allocation to
TAZ
Allocation to Residential
A
reas
Allocation to Sensible Geographies
Input Data
Evaluating Growth in metro-Boston
Allocation
to 25m Grid
Geoprocessing
VMT
(205m Grid)Slide7
MethodologySlide8
Conflicting Topographies: An Example AreaSlide9
Conflicting TopographiesSlide10
Conflicting TopographiesSlide11
The Grid(s)Slide12
Resolving Conflicts with the Grid (25m)Slide13
Allocation to Residential Areas
Identify residential and institutional land
uses.
Identify blocks that do not intersect residential land use
areas.
Land use allocation
Sliver FinderIntegrate Census Blocks (2000, 2010) and residential land usesCalculate areas, perimeter, and area/perimeter ratioEliminate features with areas less than 400
sqm and area/perimeter ratio less than 1Population/housing unit allocation model (Access)Paloc= P * (A + L) / 2
A = land use area % of total area of Block, L = land use area % of residential area in BlockSlide14
Model to Identify Block that do not Intersect with Residential Areas
Model to Allocate to Residential Areas
ArcGIS
Models: Allocating to Residential AreasSlide15
Allocation
to Residential
AreasSlide16
Merge allocated residential areas with ‘missed’ blocks forming an allocated areas polygon file.
Calculate the number of 25m grid centroids that fall in each allocated areas polygon.Identify allocated areas polygons with no 25m grid centroids.Convert the allocated areas polygons to 25m grid
celss
.
Aggregate allocated 25m grid cells to 250m grid cells (add in population missed by 25m grid method).
Aggregate allocated 25m grid cells to TAZs (
add in population missed by 25m grid method).Allocation to Sensible GeographiesSlide17
ArcGIS
Models: Allocating to Sensible Geographies
Model to Merge Habitable Area and Populated Blocks with no
Residential Area.
Model to Allocate
to 25m Grid and
then Aggregate to 250m Grid
(due to resolution of 25m grid, metro-Boston area must be divided into 32 slivers and model run for each sliver )Slide18
Allocation to Sensible GeographiesSlide19
Comparing 11.521 &
MassGIS AllocationsSlide20
ResultsSlide21
Conclusions