Open Source GIS: Web Maps, Desktop GIS and GeoDatabases

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Integrating Controlled
Content with Weave
Visualizations
David Percy
Geospatial Data Manager
PSU Institute for Metropolitan Studies
NNIP 2011 Spring- Detroit
I would have written a shorter letter, but I did not have the time. - Blaise Pascal
Greater Portland
Vancouver
Indicators
Regional Equity
Atlas
PSU Data
Commons
Ecodistricts
Assessment
Tools
Other, including
Teaching and
Research
Data Architecture
Geometries:
Census Tract
Attribute data:
Geom_ID
Zip code
Attribute_1
Neighborhood,
Attribute_2
Etc…
Attribute_N
Each with a
unique
geometry id
Examples:
poverty,
education, etc
Controlled Content
• Ability to have a pre-defined set of fields
that are filled in for a TYPE of content
page.
• In this case I defined an Indicators Type of
page with a specific set of fields that come
from our Indictor Sheets, which are also
used for outreach.
The magic incantation
• <iframe
src="https://arctest.research.pdx.edu/weav
e/weave.html?defaults=cost_burdened_ho
using.xml" width="100%"
height="800"></iframe>
Taxonomies
• Hierarchical lists of terms related in some
way
• Used as “Tags” to categorize content
• Common examples: Linnaean biological
systems, Dewey Decimal, etc
• Cf. Ontologies
Eight Categories
• No surprises here:
– Access and Mobility
– Arts and Culture
– Civic Engagement
– Economic Opportunity
– Education
– Healthy Natural Environment
– Healthy People
– Housing and Communities
– Safe People
Cross-cutting relationships
• Hexagonal tesselations
• Indicators can fit in multiple categories
Modular Weave visualizations
• Each indicator visualization is created in
Weave without “decoration”, no text
description
• This allows the visualization to be used in
multiple pages or applications
• Explanation of data is left to the containing
page.
Web Services
• In order to share data with participating
agencies, we use Open Geospatial
Consortium (OGC) web services.
• WMS and WFS are the winners
• That’s a whole ‘nuther talk!

• Thanks!
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