Analysis conducted by Rebecca Hobbs and Leticia Mata

Projection

NAD_1983_HARN_StatePlane_California_III_FIPS_0403_Feet

Retrieved Raster data from USGS Seamless Server

(Digital Elevation Model 1”)

Retrieved Vector data directly from Marin County

website: http://www.co.marin.ca.us/depts/is/main/gis/

Opportunity Sites:

CHALLENGES:

Made multiple attempts to retrieve Crime Data for Marin County

on-line. Marin County Director was contacted via phone called

and e-mail, however we received no response.

Attempted to present analysis in 3-D form using ArcScene,

however encountered difficulties when we tried to extract

elevation from base heights.

Unable to successfully incorporate the Aspect shapefile in the

composite union for constraints.

Introduction:

Tilden Preparatory School is a

private High School specializing in

one-to-one teaching, allowing

students to work at their own pace

to get an individualized education.

Tilden Prep has recently become so

popular that the directors are

looking to open a new branch in

marin county. They came to us to

conduct a suitability analysis…

RESULTS:

•A significant amount of land

within Marin County faces some

type of constraint.

•Considering our emphasis on

proximity to public high schools

and public transportation, we

believe the most appropriate sites

for another branch of Tilden Prep

H.S are those outlined in pink.

Suitability Analysis for Tilden Preparatory School

Moving to Marin County

Layer Description Value

Landslide Zones classified as “many landslides”

or “mostly landslides” were weighted as

constraints.

-1

Liquefaction Zones classified as “Very High” or

“High” were weighted as constraints.

-1

Inundation All zone with potential for inundation

were weighted as constraints in the

event of dam failure.

-1

Layer Description Value

Bus Route Buffered 2,640 feet (walking distance =

1/4mi)

+2

Public High

School

Buffered 2,640 feet (walking distance =

1/4mi)

+2

Bikeway Buffered 2,640 feet (walking distance =

1/4mi)

+1

Library Buffered 2,640 feet (walking distance =

1/4mi)

+1

Law

Enforcement

Buffered 2,640 feet (walking distance =

1/4mi)

+1

Fire Station Buffered 2,640 feet (walking distance =

1/4mi)

+1

Medical Buffered 2,640 feet (walking distance =

1/4mi)

+1

METHOD:

Raster Data Analysis included the following:

•Within Vector Attribute Table, we selected the

corresponding attributes. Then saved the

selected attributes as a new layer by exporting

selected attributes. We added a new field to

assign values.

•Converted Vector Shapefiles into Raster

(Spatial Analyst ConvertFeatures to Raster)

•Reclassified the various raster coverage’s to

commensurate assigned values.

•Converted Raster files back to Feature files.

Performed unions of the various feature files

and used field calculator to attain total weight

for composite constraint and opportunity maps.

Performed a final union of both composite maps

for final map.

Aim

•We personally met with the Directors at

Tilden Preparatory High School in

Albany to discuss their interests.

•Performed a Suitability Analysis for

Marin County according to the

techniques outlined by McHargs

studies.

Composite of Opportunities Composite of constraints

Suitability Map

A

B

C

Opportunities

Constraints