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23 Aug 16
Initial Resources — California AB 802 Support

Prime Contract
I have read once, the text of Contract 400-12-XXX
Nonresidential Science Technical Support, dated 26 July 2013, in particular Exhibit A.

AB-802 Background Reading -here-

Mayors’ Announcement -here-

A Regional Approach to Tally and Reporting

There are formal planning districts in the State of California,
representing more than 90% of the state’s population. Each is
composed of member counties. It is convenient to a statewide mapping
effort to track and focus based on the following divisions:

 region_id |     region_name     
         1 | northern_california
         2 | sierra
         3 | bay_area
         4 | sacramento
         5 | central_valley
         6 | central_coast
         7 | southern_california
         8 | san_diego

1) Northern counties (very low populations)

2) Sierra counties (very low populations)

3) Association of Bay Area Governments

4) Sacramento Area Council of Governments

5) Central Valley

6) Central Coast

7) Southern California Association of Governments

8) San Diego Association of Governments

A preliminary survey of county GIS resources -here-

US Census — Place Definitions Overview -here-

Resources for Openstreetmap Los Angeles Buildings Import

* Geofabrik Openstreetmap Extracts, California -here-

* Los Angeles Geoportal Data -here- Notes -here-

* Openstreetmap Extract API Server Links -here-

* OSM Hollywood Hills Extract -BINARY-

Openstreetmap LA Buildings Import Samples

Custom Tags Question -here-







CoStar MultiFamily POINT Test




Berkeley OSM Hilites

Berkeley OSM Hilites


17 Aug 16
Insights for California NonResidential Engineering Kickoff

An attempt to catch some of the Big Ideas of the project

* Buildings have a natural identification – location
using the location as a primary identifier with GeoHash

* This is an inventory of buildings
– not addresses
– not rendering of buildings into web screens or mobile
– not parcels
– many secondary data uses are possible, but keep it clear

* Stats approach, not only Librarianship
– there are statistical views of accuracy and completeness
– coverage is “mostly” solved (see What is a Building Footprint)

* An inventory is not a surveyors record
– location accuracy is always challenging for fundemental reasons,
but location in California is especially challenging due to seismic activity

* What is a building footprint, anyway ?
– awnings, covered parking
– connected walkways
– unusual architecture
– mixed uses, landscape integration

* This is not OpenStreetMap, but synergy is important
– an in age of local officials doing tallys by hand, tasks could last years
and still have inconsistant results
– volunteered public data has a big role, and getting bigger
OSM uses data integrity checks, culture, attribution, and tools to keep growing
– OSM Board Member Mikel Maron says
“OSM is on track to become the largest geographics data set in the world”
– LA Buildings Import project setting new precendents in 2016
– buildings are an active topic in OSM globally
– we dont care about “vector tiles” (yet)

* Distraction is Important, but has to be kept in Check !
– very interesting delivery options, renderings, linked data, repurposing
available, AND a huge time sink
– Intellectual freshness is important to great results, and
tech interoperability helps with freshness, verification,
so, use the tech, but keep AGILE checks on distraction

The next visualzations are from a previous study of residential parcels..

* Heatmap for State-wide inventory
* Hex Cells for statistical analysis of proximate value
* POINT geometry for human viz of local development patterns

click for larger view




these are snapshots taken from my internal development environment. The data you see here is the “inventory” of residential real-estate.. Anything to do with current owner, past history, current status and more are related to, but not the same as, these “match core” addresses..

As I said on the phone, the US Postal mailing address seems to be the number one matching criteria. with the physical location a close second.. Any time there is new information, it has to be matched first and foremost.

I have a lecture at 19:00, so more later… -Brian