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Open Source GIS 101, Introduction

In the world of open source software, one fact is clear. Everyone has different opinions about which software they prefer. Newcomers to open source GIS software are often confused by a seemingly chaotic mix of software applications.

So where do we start learning?

For the newcomers, this is an introduction to a short series of blogs covering the most commonly known open source GIS applications for the desktop, plus a few key concepts. The software is free for anyone to install and is typically user-friendly to those already familiar with ESRI’s ArcGIS. The future topics are listed below.

Part 1: Defining Open – Not All Open Source Licenses are Alike

Part 2: GRASS (Geographic Resource Analysis Support System)

Part 3: gvSIG (Generalitat Valenciana, Sistema d’Informació Geogràfica)

Part 4: uDIG (User-friendly Desktop Internet GIS)

Part 5: Open JUMP (Open Java Unified Mapping Platform)

Part 6: QGIS (Quantum GIS)

Part 7: GDAL/OGR - (Geospatial Data Abstraction Library/OGR Simple Features Library)

Part 8: An Open Source Alternative to the File Geodatabase (Sort of)

Part 9: A Few Notes About Map Projections

Part 10: OSGEO, The Organization

Part 11: Why Learn About Open Source GIS?

In the spirit of The Cathedral and the Bazaar, think of this series as an introductory tour of your local open air market for open source GIS. If anyone has any ideas to contribute, please send me an email!

Next blog in two weeks…

Pictometry Online – Parcels updated weekly!

pol_streamed_parcelsI have completed working with Pictometry to make an important change to the parcels shown Pictometry Online.  There is a new layer called Parcels (Streamed) which is coming directly from the County’s servers, and is updated weekly.

In the past, parcel data was uploaded to Pictometry and pre-rendered in a Web Mapping Service (WMS) – cached for speed.

The new parcel data is streamed from the County’s servers to POL through a Web Feature Service (WFS), and rendered locally.

You will most likely notice that the streamed layer is slower than the cached layer (especially upon initial load).  For now I will maintain both layers, but the cached layer hasn’t been updated in about 6 months, so I believe that currency is more important that speed at this point.

There are two parcel layers at this time – try each one and determine which one you think works better for you.

Pictometry for ArcGIS Desktop – updates released

polHi there,

Pictometry has released is newest versions of “Connect” – which enable you to connect to Pictometry Online using your established username and passord.

Make sure you download the correct version.

Link to the Pictometry download page

Release Details below:

Continue reading Pictometry for ArcGIS Desktop – updates released

ArcGIS 10.1 Service Pack 1 available

ESRI has announced the release of ArcGIS 10.1 (Service Pack 1).

Downloads are available here: http://support.esri.com/en/downloads/patches-servicepacks/view/productid/160/metaid/1913

Looks like a lot of work to implement – have fun!

Copying your ArcGIS Desktop database and server connections

A major hassle with upgrading to a new computer or a new version of ESRI desktop software is that you need to recreate your connections to your databases (generally manually).  For LA County, we recently migrated to a new database with a large increase in connections, which meant that a lot of folks needed to do a lot of manual entry.

However, that isn’t the case!  You can back them up or copy them to the new computer or version with two simple steps!!!

For larger organizations, this also means that you can create a single set of connection strings and email them to your staff so they can implement them.  They wouldn’t even know the password!!

Connection files in Windows

Instructions

These instructions are for Windows 7 – they may vary slightly for older versions of Windows.

Step 1: Find your current string locations

  1. Navigate to your existing AppData Folder – for ArcGIS Desktop 10.0 you would find it here:
    1. C:\Users\<your login ID>\AppData\Roaming\ESRI\Desktop10.0\ArcCatalog
    2. You should see a lot of files there – copy them to a location that you know or back them up.

Step 2: Copy to the new location

  1. Navigate to your new AppData Folder – for ArcGIS Desktop 10.1 you would find it here:
    1. C:\Users\<your login ID>\AppData\Roaming\ESRI\Desktop10.1\ArcCatalog
    2. Paste all of the connection string files into this folder.

Step 3: Open ArcCatalog

You will see all of your connections

LAPD Tries Crime Predicting Software

“The software creates a “heat map” that was found to be more accurate than seasoned police veterans at predicting where crimes would happen next …”

Link to article in Government Technology – http://www.govtech.com/public-safety/Los-Angeles-Police-Getting-Results-from-Crime-Predicting-Software.html

Link to MIT Technology Review article - http://www.technologyreview.com/news/428354/la-cops-embrace-crime-predicting-algorithm/

 

Geocortex Essentials 3.9 is ArcGIS Server 10.1 Compliant

Good news for LA County.  We generally wait for a while before we put new releases of applications into production, but we will be working to establish a test server with this on there.

From Latitude Geographics:

Continue reading Geocortex Essentials 3.9 is ArcGIS Server 10.1 Compliant

Pictometry Desktop Extension for version 10.1

I wanted to pass this along since I just received it.

Pictometry for ArcGIS Desktop–Local extensions support ArcGIS Desktop Versions 9.3 & 10 only at this time.

Pictometry continues to integrate with the ESRI ArcGIS Desktop products and we are currently reviewing development compatibility with Version 10.1.  Any changes or updates to this product integration will be posted on Tech Updates.

In the meantime, if you plan on upgrading to ArcGIS Desktop 10.1, it is important that you follow these steps:

1) Turn off (Customize > Extensions) the Pictometry for ArcGIS Desktop Extension.
2) Close ArcGIS Desktop
3) Uninstall the Pictometry for ArcGIS Desktop extension (through the Windows Control Panel)
4) Upgrade to ArcGIS Desktop 10.1

Please contact Pictometry Customer Support at 888-771-9714 or customersupport@pictometry.com if you have any questions.

ESRI releases ArcGIS 10.1

ESRI just announced that is is releasing 10.1 – there look to be a lot of enhancements.  For the full list of changes, here is the 169 page document: Whats new in ArcGIS 10.1 (.pdf file)

Here are some that I find interesting on the server side (I’ve extracted the text from the document).

Connect to ArcGIS Server with a ‘Publisher’ role

In previous releases of ArcGIS Server, you had to connect to the server as an administrator in order to create or update services. In 10.1 you can now assign users the publisher role. This way you can allow users to publish, stop, and start services without giving them access to advanced administrative tasks such as adding machines to a site.

New logging framework and user experience in Manager
At ArcGIS 10.1 for Server, logs are distributed among all GIS server machines participating in your site.  It’s recommended that you view and query the 10.1 logs using ArcGIS Server Manager or the ArcGIS Server Administrator Directory, rather than attempting to sort out the logs on your own.

Map services allow clients to change layer appearance and behavior dynamically
Clients of ArcGIS for Server, such as the ArcGIS web APIs, can change layer appearance and behavior in a map service dynamically. Behaviors such as which layers will appear in a map, layer symbology, layer order and position, and labeling can be achieved on the server through the use of dynamic layers. In this way, dynamic layers can increase the amount of interaction that users are able to have with your maps.

Batch geocoding using REST
In addition to finding single addresses and performing reverse geocoding, you can now do batch geocoding using REST.

You can get detailed status reports on your cache as it builds
For any cached map, you can now request a report showing level-by-level statistics of cache completion status. You can also view the status of each caching job you’ve submitted.

ESRI releases ArcGIS 10.0 Service Pack 4

SP4

Just got this via email.  Click to go the site: http://resources.arcgis.com/content/patches-and-service-packs?fa=viewPatch&PID=160&MetaID=1840

There is a massive list of fixes here: http://gisupdates.esri.com/10sp4/ArcGIS/ArcGIS10sp4-issues.htm#desktop-sp4

I wish it was organized a little better – considering there must be a few hundred enhancement it’s hard to look for specific things that I want to check.