College of the Canyons GIS

Need to fulfill a beginning GIS requirement?  Or just want to expand your knowledge and learn a new skill?  Then come join me at College of the Canyons and sign up for GIS 101, Introduction to Geographic Information Systems.  I promise you the class will be challenging and rewarding!  Also, your earned units are UC/CSU transferrable.

GIS 101 is filling up quickly, so register for the Spring semester as soon as possible.  The GIS class will meet at the Valencia campus every Tuesday from 6:30pm to 9:35pm, February 5 to May 28.  We start next week!

Feel free to contact me, Michael Carson (, if you have any questions.

Unintended Consequences with Data

Many of us that create GIS data and share with others have no idea of the unintended consequences that the data might produce.  Using data and ignoring the scale, resolution, accuracy, and where it came from might produce very wrong results.

Click below to read this rather long story about how location data married with IP addresses is causing a horror show for a couple in South Africa, and this is not the only case.


ArcGIS 10.7 Prerelease Available

ArcGIS 10.7 Prerelease is available for download now from My ESRI.  This includes Desktop, Engine, and Enterprise.  What’s new in 10.7 can be found here.  System requirements here.  Release note here.  The quick start guide can be found here.

The ArcGIS Desktop and Engine 10.7 setup packages are designed to detect and upgrade an existing installation of the same ArcGIS product. The settings for the installation location, License Manager (for Concurrent Use), or authorization information (for Single Use) are retained during the upgrade.  Continue reading

ArcGIS Pro 2.3

ArcGIS Pro 2.3 just became available today.  Check out what’s new here.

Quite a few customer requests were added to this release.  To view what they are, ESRI has made a video of each request.

More info can be found here.  Release notes can be found here.

The system requirements for 2.3 can be found here.  ArcGIS Pro will not be supported on Windows 7 after January 2020.

And if you have been running ArcGIS Pro on a Mac using Parallels or VMware Fusion, at 2.3 you will not be able to do that anymore.  Instead you must use Boot Camp.  Read more about that here.

ArcGIS and TLS 1.2

ESRI recently sent out a reminder that starting April 16, 2019, they will be updating ArcGIS Online to enforce the use of TLS version 1.2 only.  The update is likely to affect most ArcGIS software and your custom solutions.  If you have not updated and validated your system’s support for TLS 1.2 only, you may lose your ability to connect to ArcGIS Online.

If you use ArcGIS Pro to connect to ArcGIS Online, you are fine if you are using versions 2.0 to 2.3.  If you are using Pro 1.2 to 1.4.1, these versions are all retired and you are encouraged to upgrade to the recent version.

If you use ArcGIS Desktop to connect to ArcGIS Online, version 10.7, to be released in first half of 2019, will support TLS 1.2.  Version 10.6.1 and earlier will require a patch to enable TLS 1.2.  ESRI has provided validation web services so you can quickly verify that ArcGIS Desktop, third-party apps, and custom components will work when TLS 1.2 only is enforced.

For more info on this, see ESRI’s technical support article on TLS.  Also see the list of software products affected by this change.  To enable TLS 1.2 on ArcGIS Desktop, see this FAQValidation web services can be found here.

Moving To PostgreSQL (Part 3)

Welcome back!  Last time in Part 2 we configured PostgresSQL on a Linux server.  Now it is finally time to create an Enterprise Geodatabase in PostgreSQL.

Keycodes File

You now need to find your keycodes file.  This file was created when ArcGIS Server was installed on one of your servers.  This file is written to \Program Files\ESRI\License<release#>\sysgen folder on Windows servers and /arcgis/server/framework/runtime/.wine/drive_c/Program Files/ESRI/License<release#>/sysgen on Linux. Copy the keycodes file to a computer that you run ArcGIS Desktop on.  You will need access to it when creating the Enterprise Geodatabase.  Continue reading