May 2017
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How To Interpret a Satellite Image

This is a good read; and not too long.  From Earth Imaging Journal, January/February 2014.

Five basic strategies will help you discover a wealth of knowledge.

Click here for the article.  Credits to:  Holli Riebeek, NASA Earth Observatory (, Greenbelt, Md.


Reminder – no eGIS Meeting tomorrow

Just a reminder that we will be meeting on the 29th instead.

LA County GIS Data Portal adds instructional videos

instructional_videosWe have a pair of instructional videos for the LA County GIS Data Portal that will help you make better use of the data.  The first video shows you how to find and download GIS data from our site, while the second shows you how to use free software to begin making maps with our free data.

Thank you Public Works, and John Hickock in particular, for making this for us!

Click here to go to the videos page.

Upcoming SCAG GIS Trainings – Intermediate and Advanced (free)

scag_gisPassing this along to you, in case you are a SCAG GIS Services participant (most local governments in Southern California are)

Thank you for participating SCAG GIS Services Program. As promised, SCAG will be providing 8 intermediate and 5 advanced GIS trainings in months of April, May, and June at different venues. Online registration is available at

As part of SCAG GIS Service Program, these trainings are free to the participating jurisdictions. For more information about SCAG GIS Services Program, please refer to If you have any questions, please feel free to contact me or Javier Aguilar at


Again, thank you for your participation!

GIS positions implementation approval before the Board On 15 April

Recommendation: Approve the introduction of an ordinance to add one non-represented classification, change the title of one non-represented classification, and reclassify 140 positions to implement results of the Countywide Geographic Information Systems study in the Departments of the Assessor, Chief Executive Officer, Children and Family Services, Fire, Health Services, Internal Services, Public Health, Public Works, Regional Planning, and Registrar-Recorder/County Clerk. (Relates to Agenda No. 47) (14-1658)

 Also contains the new positions as recommended for individuals (not by name) as per the survey.

calstatelbPassing this along:

There is still time to apply to the California State University Long Beach MS in Geographic Information Science (CSULB MSGISci). The MSGISci is a 1-year 30-unit program geared toward working professionals.

Click here for more information and/or visit

Please contact the MSGISci Program Coordinator  Ms. Beth Moody and/or the MSGISci Program Director Dr. Suzanne Wechsler ( with any questions. 

FOSS4G 2014 Registration Opens

FOSS4G International ConferenceToday, registration opens for the annual international FOSS4G conference (Free and Open Source Software for Geospatial).

Organized by OSGeo, this year’s event returns to North America via Portland, Oregon, U.S.A. and takes place September 8-13.

To learn more about the workshops, presentations, social events, and the people who make it happen, visit FOSS4G 2014. If you have an interest in open source GIS but don’t plan to make the 1,000 mile trek to Oregon, plenty of information is available online. The FOSS4G 2013 site will provide a rough idea of what was done last year, and some of those presentations can be found on YouTube.

TileMill and Mapbox

TileMill is a free and open source desktop application that runs on Windows, Mac, and Ubuntu. As the name suggests, TileMill produces a set of cached image tiles, while Mapbox provides a means to host your cache online, using Open Street Map as a base.

A few weeks ago, I tried out the free plan and used TileMill to create this map from our City Boundary shape file. (This map might not render if you are using an older browser. I had better luck with Chrome.)

On the positive, you can make a lean, quick, online map that is both PC and mobile phone friendly. On the negative, the free plan’s limited space caused me to run out of tiles at larger scales; at least some of the paid plans seemed reasonable.

If you are attending CalGIS 2014 and you’d like to know more about TileMill, Eric Gundersen, CEO of MapBox, will be one of this year’s featured speakers.

Choosing a mobile development Strategy

ESRI wrote a very nice article about the various technology decisions when selecting a mobile development strategy.  It isn’t GIS centric nor esri centric, so I highly recommend it.

Choosing a mobile development strategy introduces many parameters: a team’s development skillset, the application’s required functionality, and the ease of maintenance, just to name a few.  Compared to desktop technology, mobile technology is still in its embryonic stage and rapidly evolving.   This post examines three models of mobile application types: Web, Hybrid and Native.

Finish reading:

The Los Angeles that was never built

transit_plan.jpeg__800x0_q85_cropOf course I like the maps showing the possible green spaces – take a look!