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LA County Image Change App

Explore changes over time in LA County using our high resolution LAR-IAC imagery. Click and drag the time slider bar to see the changes between 2014 and 2011 imagery. Several bookmarks have been created for you to quickly see some cool examples of development and the effects of drought on the landscape (e.g. LAX, Santa […]

These Maps are Fake, But You’ll Still Want to Explore Them

We all take great strides to provide the highest quality and accuracy of our maps. This article might be enjoyed by the creative minds among us. The article begins…

“Most maps depict a real place in the world, but that doesn’t have to be the case. Sometimes images that look like maps can be excellent […]

What is Open Street Map?

About a decade ago, a group of cyclists in the U.K. were frustrated with the lack of freely available street map data. Cyclists need to know how to get from here to there without freeways. This is what led to the founding of OpenStreetMap, or OSM, one of the world’s best known crowd-sourced projects. […]

LA County Open Data Portal goes live

This morning LA County launched its Open Data Portal at https://data.lacounty.gov/. Beyond GIS data, the data portal expands the scope of our open data efforts to non-GIS data, including budget and finance information.

Developer tools and Open APIs enable developers to leverage the data as a service, and to build applications against […]

Nice Graphic from the LA Times: How Litter Drains to the Ocean

This is a nice graphic from the LA Times that tells the story of how litter reaches the ocean through the County’s vast storm drain network. Kudos to LA County Public Works for getting that project completed a couple of years ago and for providing to folks.

Here’s a link to the […]

Business locations, map errors, address errors – interesting article

I ran across this blog post – for those of you who deal with addresses and maps the deep dive into various address issues is interesting …

http://blog.telemapics.com/?p=533

 

Census Bureau releases new 5-year American Community Survey Data

The ACS dataset for the past 5 years has been released by the Census Bureary. See the press release

As well, there are a number of mapping applications that use this data. Take a look!

Census Explorer: Young Adults: Then and Now Edition

Do more young adults today in […]

LA County GIS Viewer- Elevation Profile tool now available

An elevation profile shows the change in elevation over distance, and can be a powerful way to learn about how steep a hillside is, how difficult a terrain is to traverse, show expected water run-off, and helps visualize elevation information for many business needs.

 

In partnership with Latitude Geographics, LA County is […]

LA County GIS Viewer adds 2014 LARIAC Imagery

Starting January 2014, the Los Angeles Regional Imagery Acquisition Consortium (LARIAC) – click here for more details – funded the acquisition of updated 4-inch resolution orthogonal imagery. A preliminary dataset has been delivered to the County, and it is now available in the LA County GIS Viewer.

Note – 2014 was […]

Training materials for QGIS and LA County Data

As part of GIS Day 2014 (see http://gis.lacounty.gov/gisday), John Hickock from our Public Works Department developed a brief training for our 2014 GIS Day event, which will give you an introduction to QGIS and some data resources to get started.

He has made the links and resources available, so we are publishing that […]