christine ma_portfolio_small

portfolio

Master of City and Regional PlanningCornell University

[email protected]

GIS + Urban Planning2011- 2015

CHRISTINE MA

ABOUT Christine

Christine is a self-motivated urban planner and GIS ana-lyst. With over four years of experience using GIS in the field of urban design and planning, she has focused pri-marily on gaining insights and identifying solutions using spatial analysis, network analysis, geoprocessing, geocod-ing, and other ArcGIS tools.

An expert communicator, Christine has a proven ability to visualize data and present it in an understandable way that keeps citizens and stakeholders engaged. She views GIS as a vehicle for public conversation in urban planning.

Christine holds a master’s degree in City and Regional Planning from Cornell University.

1. network analysis

The most important aspect for fire

de- partments and emergency services

is response time.

GIS analysis of the response statistical

data provides the ability to create

service areas, calculate fire station

service volumes, examine attributes,

and visualize the data.

The findings of this project illustrate 4

minute service areas and the service

volumes for each fire station by using

vari- ous network analysis methods.

Analyzing 2012-2015 confirmed fire

data alongside census block group data

illustrates areas of concern by using

hot spot analysis and other

Geoprocessing tools.

City of Minneapolis Fire Stations Service

Analysis

Project

City of Minneapolis Fire Stations Service Analysis

Key words

Nerwork Anlaysis, Emergency Response TIme, Service Area, Location

Allocation, Hot Spot Analysis

My Role

Independent Work

Project Scope

City of Minneapolis

Datasets

- Streets

- Fire Stations

- Fire Stations Service Area

- Census Block Groups

- Parks

- Water Bodies

- City Limit

Tools Used

- Service Area Analysis

- Location Allocation

- Spatial Analysis tools

- Spatial Statistic tools

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Parks

Water bodies

Streets

City Limit

Sources: Esri, HERE, DeLorme, USGS, Intermap, increment P Corp., NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), MapmyIndia, © OpenStreetMap contributors, and the GIS User Community

Minneapolis Fire Station Service Analysis

Legend

'4 Fire Stations

Fire Department Districts

FacilityID

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12

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±0 0.3750.75 1.5 2.25

Miles

3

Coordinate System: NAD 1983 UTM Zone 15N

Projection: Transverse Mercator

Datum: North American 1983

Figure 1:

Current Fire Station Service Zones

Mapper: Christine Ma

Date: 08/27/2015

The City of Minneapolis Fire Department has about 414

firefighters assigned to 19 stations located throughout the

city. Each station responds to calls within its own response

area illustrated in the map on the left.

This map of the City of Minneapolis identifies the

current city streets, current fire station locations (red point

sym- bols), and the current fire station service areas.

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Legend

'4 Fire Stations

4mins Service Areas

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4mins Service Gap

Streets

Parks

Water bodies

City Limit

±0 0.3750.75 1.5 2.25 3

Miles




Figure 2:

4-Minute Service Area and Gaps


Date: 08/27/2015

This map uses Service Area Anlaysis within Network

Anlaysis. It identifies the 4 minutes service areas based on

City Street Dataset. As we can see, these 4 minute service

areas mostly confirms the exisitng fire station zones.

A field was added within the Street Dataset to calculate a

drive-time cost attribute in ArcGIS Network Analyst:

[Leng th_Field_Mete rs] / 1609 * 60 / [Spee d_Field_MPH]

There are two major gap areas, however, that do not meet

the 4 minute criteria, indicated by the orange striped zones.

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Legend

'4 Fire Stations

City Limit

Parks

Water bodies

Streets

±0 0.3750.75 1.5 2.25 3

Miles




FacilityID Responding Fires

1 38

2 38

3 40

4 58

5 106

6 57

7 90

8 51

9 30

10 33

11 39

12 48

13 40

14 62

15 53

16 20

17 47

18 20

19 128

Figure 3:

Confirmed Fire Location Allocation


Date: 08/27/2015

This map was made with Location Allocation Analysis

within Network Anlaysis. It illustrates service volumes for

each of the 19 fire stations based on their locations, 1000

confirmed fire incidents in 2013 and city street dataset.

As we can see from the table, several fire stations have far

more fire incidents within their service zone than

average,

e.g. stations 5, 7 and 19. Some stations have much fewer

incidents than average, such as stations 16 and 18.



Legend

2012-2015 Fire Incidents Density

0 - 5

6 - 25

26 - 50

51 - 75

76 - 90

91 - 120

Streets

City Limit

±0 0.3750.75 1.5 2.25

Miles

3




Figure 4:

2012-2015 Fire Incident Density

This map uses Point Density tool to analyze the density

of 2012-2015 confirmed fire incidents density in City

of Minneapolis.


Date: 08/27/2015



Legend

Fires by census blockgroup

Number

1 - 5

6 - 10

11 - 15

16 - 25

26 - 45

Streets

City Limit

±0 0.3750.75 1.5 2.25 3

Miles




Figure 5:

2012-2015 Fire Incidents by Census

Blockgroups


Date: 08/27/2015

This map uses the Spatial Join tool to join data of con-

firmed fires from 2012- 2015 and census blockgroups. A

new feature class is created with joined attributes of

num- bers of fire incidents by census blockgroups. It

illustrates the concentration of fire incidents.



Legend

Hot Spot

Cold Spot - 99% Confidence



Not Significant

Hot Spot - 90% Confidence



Streets

City Limit

±0 0.3750.75 1.5 2.25 3

Miles




Figure 6:

2012-2015 Fire Incidents

Hot Spot Anlaysis

This map uses the Hot Spot analysis tool to analyze

the hot spots and cold spots of the fire indicents

based on census blockgroups.


Date: 08/27/2015

2. weighted overlay

Green stormwater infrastructure includes

a range of soil-water-plant systems that

intercept stormwater, infiltrate a portion

of it into the ground, evaporate a

portion of it into the air, and in some

cases re- lease a portion of it slowly back

into the sewer system.

To determine the suitability of GSI site,

a wighted overlay map was generated by

creating and overlaying raster analyses. A

model outlines the process of running

this site suitability study.

This study is a general analysis with limit-

ed criteria. We can begin to target suitable

locations for further investigation based

on additional information specific to each

measurement.

Ithaca Green Stormwater Infrastructure Site Suitability

Project

Ithaca Green Stormwater Infrastructure Site Suitability

Key words

Reclassify, Weighted overlay

My Role

Independent Work

Project Scope

City and Town of Ithaca

Datasets

- Tompkins County Municipal boundary

- Watershed

- Land use

- Ithaca DEM

Tools Used

- Slope

- Polygon to Raster

- Reclassify

- Weighted Overlay

Elevation to Slope

GSI site Preferences

Digital Elevation ModelLegend

Town of Ithaca

City of Ithaca

DEM

ValueHigh : 534.5

Low : 116.4

±Coordinate System:

NAD 1927 UTM Zone 18N



Author: Christine Ma

0 0.5 1 2 3 4Miles

Slope Suitability

Legend

Town of Ithaca

City of Ithaca

Ithacaslope

<VALUE>

1 Flat

2

3

4

5 Steep






0 0.5 1 2 3 4Miles

- Best Slope is 7% or less- Close to watershed- Prefered land use: Recreation, Pulic, Institutional

Land Use

Slope Slope Grid

Euclidean Distance

Hydro

Euclidean Dist

Output

direction raster

Reclassify (2)Dist to hydro

ReclassWeighted Overlay

GSI Site

Suitability

P

Hydrology

Elevation DEM Reclassify slope_rcl

GSI Suitability Model

Hydrological Proximity Suitability

Legend

Town of Ithaca

City of Ithaca

Hydrology Proximity

<VALUE>

5 Furthest

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1 Closest

±

0 0.5 1 2 3 4Miles

Coordinate System:NAD 1927 UTM Zone 18N

Projection: Transverse Mercator Datum: North American 1927


Land Use Suitability

Legend

Town of Ithaca

City of Ithaca

Land Use

General

Agriculture

Barren or Disturbed

Commercial

Inactive Agriculture

Industrial, Transpo

Public/Institutional

Recreation

Residential

Vegetative Cover

Water

Wetlands






0 0.5 1 2 3 4Miles

General GSI Site Suitability

Legend

Town of Ithaca

City of Ithaca

Suitability

Value

1 Most Suitable

2

3

4 Least Suitable

±

0 0.5 1 2 3 4Miles

Coordinate System:





Application and Reflection:

Different weighting of the criteria has a large in-

fluence on the final suitability map. More research

on GSI and its site allocation prefernces need to

be done to determine a more effiicent model.

The skills and concepts learned in this exercise

could be applied to a multitude of similar

prob- lems within the field of site suitable

analysis.

Beyond determining GSI site suitability, this type

of analysis could also be used to determine best

locations for habitat suitability, new affordable

housing project. GIS and suitability analysis can

be used in numerous fields and applications.

3. georeferencing

“Georeferencing” is the term used for

allocating spatial reference information

to a data set.

There are a great deal of historic maps

and images available in formats that can-

not be immediately integrated with other

GIS data. In these cases, I explored Geo-

referencing Tool in ArcGIS to compare

the past and the present.

Georeferenced Historic New York City

Project

Georeferenced Historic New York City

Key words

Raster Image, Georeferencing, GIS

My Role

Independent Work

Project Scope

New York City

Datasets

- NYC Street.shp

- Upper Manhattan 1920.jpg

- Manhattan and Bronx 1916.jpg

- Lower Manhatan and Brooklyn 1840.jpg

Time

09/2015

Sources: Esri, HERE, DeLorme, USGS, Intermap, increment P Corp.,NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand),MapmyIndia, © OpenStreetMap contributors, and the GIS User Community

Georeferenced New York City

±0 0.5 1 2 3 4

Miles


Date: 9/2/2015

This map contains three georeferenced maps of New

York City from 1840, 1916, and 1920.

3. georeferencing

This project focuses on the

sustainable adaptive reuse of

HemisFair Park, the 1968 World’s Fair

site in San Antonio, Texas.

Ever since the success of the World’s

Fair, the city of San Antonio has

consid- ered multiple redevelopment

plans for the park, however many of the

historical structures from the event have

remained

vacant and underused. Today, these struc-

tures are recognized as buildings with

historical significance and will be retained

on site.

Our project provides recommendations

for how HemisFair Park can be redevel-

oped and how these historical buildings

can be sustainably adapted to suit the

needs of the city today while

maintaining their historical significance

as part of a former World’s Fair site.

Georeferenced Hemisfair 1968 in San Antonio

Project

Georeferenced Hemisfair 1968 in San Antonio

Key words

Raster Image, Georeferencing, GIS

My Role

Team Lead

Project Scope

Hemisfair Park, San Antonio

Datasets

- Buildings.shp

- Street.shp

- Hemisfair 1968.tiff

- Hemisfair Park Future Plan.jpg

Tools used

Georeferening toolbar, Edit toolbar

Time

09/2014- 12/2014

Source: Esri, DigitalGlobe, GeoEye, i-cubed, Earthstar Geographics,CNES/Airbus DS, USDA, USGS, AEX, Getmapping, AerogMride,tIeGrNs, IGP,

swisstopo, and the GIS User Community

Georeferenced Hemisfair 1968 Site

±0 37.5 75 150 225 300

This map georeferenced a scanned site map from the of-

ficial Hemisfair 1968 brochure. Then this map was digi-

talized to show the buildings, open space, water and other

features of the site as it existed in 1968. The digitalized

land use map was then used to compare with current

land use to discover patterns and learn from the past.

Digitalized Hemisfair 1968 Site Plan

- Land Use Comparison

1968 Land Use

Current Land Use

b. Pedestrian to Vehicular SpacesVehicular area has increased significantly from 2.7% in 1968 to 16.76% today. Due to the increase

in the vehicular areas in the site, this has caused a decrease in the amount of land dedicated to

pedestrian use, reducing the ratio of designated pedestrian areas from 40% in 1968 to 15% current-

ly. With the increase in vehicular spaces and roads designed for cars, a shift can be seen from an

emphasis on a pedestrian oriented park during the Fair to a more vehicular oriented environment,

in which most of the pedestrian spaces are replaced by parking lots and roads suitable for auto-

mobile transport.

c. Fewer Water Features

Water spaces also comprised about 6% in the site during the Fair. However, all the water

features have been replaced by either pathways or vehicular roads today. One water

space that exist today is part of the river in the river walk in the northern area of the park.

Comparison Matrixa. Similar Buildings RatioThe ratio for buildings are similar between the past and the present site, at 31% and 36% respec-

tively. Although it can be seen from the two maps that some of the buildings have been kept,

tiny buildings that occupied the western part of the park during the Fair have been replaced by

parking in the current cite.

Georeferenced Hemisfair, 1968 and the future

- Aerial View: Past, Present and Future

The images above show the georeferenced aerial views of the site

during the Fair, the park today, and the georeferenced future proposed

site by the Hemisfair Park Area Redevelopment Corporation. The fu-

ture site plan is one of the many proposed redesign plans for the park.

The future plan proposes an expansion of the convention center to the

east and converting the western portion to create space for a civic park.

This idea is from the master plan in 2004, showing the phase 2

planning process in “Hemisfair Civic Park Vision and Program Plan”.

Proposed Future Plan

4. GIS in Urban Design

This set of projects ues Geogrphic In-

formation System to inform design

decisions by providing data and tools that

help designer to better understand and

visualize the changing environment.

Grown Ithaca:

Ithaca Gun Site Redevelopment

Project

Ithaca Gun Site Brownfield Redevelopment

Key words

Nerwork Anlaysis, Emergency Response TIme, Service Area, Location

Allocation, Hot Spot Analysis

My Role

Independent Work

Project Scope

Ithaca Gun Site

Datasets

- Streets.shp

- Buildings.shp

- Parcels.shp

- DEM

Time

09/2014- 12/2014

SITE ANALYSIS

- The growth of start-ups and the available funding in Ithaca coupled with the lack of a strong support network for the start-up lifestyle.- The vibrant fine arts scene without very many venues hosting theater and performing arts- The enthusiasm for local and organic food but only one existing community garden in the city of Ithaca- A foodies’ city in the truest sense, but with a site at the center of a 15-minute-walking-radius food desert- The town of trails, vistas, and gorges, but with views obscured and trails disconnected by the site

Theater ArtFood

Start-UP Recreation

SYSTEM SITE PLAN

SECTIONS

4. GIS in Urban Design

This geodesign project overlays transpo-

ration, land use, and landscape datasets

to build a framework to understand local

ecological and economic development.

Ecological Framework

- Natural System accommodating Economic Development

Project

Mentougou District Design and Comprehensive Plan

Key words

Geodesign, Economic Development

My Role

Project Manager

Project Scope

Mentougou District, Beijing

Datasets

- Streets.shp

- Buildings.shp

- Tree inventory.shp

- DEM

Time

12/2010- 09/2011

Context

The Ecological business island is

surrounded by water and it is close

to nature.

Accessibility

The Ecological business island has

great access to convenient traffic and

it can be reached on foot.

Function

The Ecological business island was ori-

ented by the city’s major functions.

Development

The Ecological business island holds the

life of citizens with full vigor.

Ecological Business Island

My Vision

There are many elements to consider to set up frameworks

for development: Economy, Ecology, Transportation and

Culture, etc.

In this project, I studied the landscape systems and struc-

tures that interact with economic development using GIS

and illustration tools to better understand and visualize

the future of Mentougou.

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Documents