Posts Tagged ‘Aerials2005HalfFoot map service’

Introducing the 2009AerialsFourInch Service

May 29, 2009

Aerials are an integral part of any well rounded Geographic Information System. Aerials can be used as a great base to provide a context for other data, as part of a quality control effort, or as the source to create new data.

Our new 2009 aerials were flown between 11:20AM and 12:30PM on April 17th, 2009. They are 4 inch resolution meaning each pixel correlates to 4 inches by 4 inches (16 square inches) on the ground. Our new aerials are the highest quality I have ever worked with. They are on-par with the best aerials available today. Below is a table comparing some of the variables between the 3 main aerials we use here at the Port.

Aerial Service: I3_Imagery Prime_World_2D 2005AerialsHalfFoot 2009AerialsFourInch
Source: ArcGIS Online Port Port
Date Taken: 3/15/2008 in Port Area 2005 4/17/2009
Coverage: Worldwide 52.5 Sq. Miles covering Port Tidelands 48.7 Sq. Miles covering Port Tidelands
Resolution: .3 Meters (≈1 Foot) in Port Area Half Foot Four Inch
Ground Pixel Size: 12 x 12 = 144 Sq Inches 6 x 6 = 36 Sq Inches 4 x 4 = 16 Sq Inches

Below are 2 images showing measurements of one side of each pixel.

2005 Pixel Measurement

2005 Pixel Measurement

2009 Pixel Measurement

2009 Pixel Measurement

This is all great, but how does this correlate to the real world? Below are the 3 images of the Administration Building Parking lot. As you know the parking lot was recently repaved and reorganized.

2003 Parking Lot

March 2008 .3 Meter Resolution

2005 Parking Lot

2005 Half Foot Resolution

2009 Parking Lot

April 2009 Four Inch Resolution

Along with our parking lot there have been other changes on or around the Port tidelands since 2005, including the new Hilton between the Convention Center and Tenth Avenue Marine Terminal.

Left 2005 - Right 2009

Left 2005 - Right 2009

We have set up a web application where Port employees can examine the new aerial photos. You can get to this web application by clicking on the 2009 Aerials button at the PortGIS Resource Center. They are much larger images and therefore take a second or two more to render on your screen. Feel free to turn on and off layers in the “Map Contents” area. We hope to include them in the other PortGIS applications shortly.

CoolOldMap Zen

The PortGIS (Projects) Web Application and Mayor Sanders’ Airport Plan

March 3, 2009

At the Port of San Diego we manage many properties which are under development. Reports and general information about the more substantial projects are prominently displayed on our external homepage, under the heading “Current Development Projects.” Many of these reports include maps which we might want to compare to existing infrastructure for a wide range of reasons. The PortGIS (Projects) web application intends to give Port employees the ability to compare plans for developments which effect Port properties.

In 2003, San Diego County Regional Airport Authority split from The Port of San Diego, but we often have overlapping interests an concerns. Over the years there has been a lot of debate about revamping Lindbergh Field or moving the airport to another location. On February 12, 2009, the Ad Hoc Airport Regional Policy Committee, chaired by San Diego Mayor Jerry Sanders, released an Executive Summary (docs #354064) outlining their plan for Lindbergh Field. They also released an impressive video simulation. Click the Play button below to hear a KPBS story about the release of this document.

On page 11 of the Executive Summary is a Map titled “Recommended Development Plan.” In the video below I explain how to explore this map in relation to our high resolution aerial photography and our Port interests as represented in the 2007 Tidelands Mapbook.

AreYouReadyForTheFuture Zen

Measure tool in the PortGIS (Beta) Web Application

January 21, 2009

Below is a quick video on the measure tool in our PortGIS Web Application.

We use the infield at Petco Park to show the tools accuracy, but the real power is combining this tool with Port data, specifically the TidelandsMapbook2007 service. The system is set up to answer questions such as; How far is it from the U.S. Pierhead Line from to the parcel leased to the Maritime Museum Association of San Diego?
webappmeasure

Lastly, we would like to welcome Vice Admiral Charles Wurster to our Port family. Admiral Wuster was named the Port of San Diego’s new president and chief executive officer. To see the official Port of San Diego Press Release click here.

AwesomeObamaInaugurationInGoogleEarth Zen

The PortGIS (Beta) Web Application

January 4, 2009

Below is a quick introductory video showing how to access and use our internet browser based GIS web application. We created this product to give all Port employees access to our in-house GIS services: high resolution imagery (Aerials2005HalfFoot) and the Tidelands Mapbook (TidelandsMapbook2007). Every computer that has access to the internet has the hardware to use this web page. Unfortunately, this page requires Internet Explorer 7 (IE7). The browser installed on most machines at the Port is Internet Explorer 6 (IE6). You can access this webpage in IE6, but it doesn’t function quite as well. We are in the process of upgrading everyone to IE7, primarily to support the upcoming SAP upgrade. The video below was recorded using IE7. To check which version of Internet Explorer you are using: Open Internet Explorer and goto Help>About Internet Explorer. You can also access this webpage with newer versions of other browsers such as Mozilla Firefox, Opera, or Google Chrome.

WhatMalcolmIsListeningTo Zen

ArcGIS 4 AutoCAD and our Port GIS Services

December 26, 2008

ArcGIS 4 AutoCAD is a free tool which allows AutoCAD users to view ArcGIS Services within AutoCAD. This software creates a bridge between the GIS world and the CAD world. AutoCAD users are drawn to this tool because it gives them a window into GIS data, while still allowing them to work in the familiar AutoCAD environment. As a GIS professional, I think it is useful because it will lead CAD users to implement GIS spatial standards (coordinate system, projection and scale) without much effort. The short-term selling point for this product is that it is easier to access our in-house aerials using ArcGIS for AutoCAD than the current process. Below is a video showing how to connect to our in-house GIS services. I am not sure why my cursor is shown as a timer icon- please ignore.

I reviewed ArcGIS for AutoCAD a few months back. Since then ESRI has released the new version (build 110) which is used in the video. It seems much more stable and we are now getting real functionality we can integrate into our daily workflow.

The current release of ArcGIS for AutoCAD makes great strides in bringing GIS data into AutoCAD. The next release will streamline the process of creating GIS data within AutoCAD. We will update this blog as new functionality becomes available. If you would like to learn more about this I suggest you also read Don Kuehne’s GIS CAD Interoperability blog at http://giscadblog.blogspot.com/. We certainly will.

Our AutoCAD users manage much of our spatial data. For example; a storm drain is moved based on new construction. Not only will these changes effect Engineering data. These changes will also be reflected throughout the rest of the system. Environmental Services and General Services seem most likely to utilize this data. How does your department utilize data produced (or owned) by AutoCAD users? Would it be useful for this data to be displayed in an interactive web-based map?

PortGIS (Harbor Police) to be Released

October 30, 2008

We hope to release PortGIS to the Harbor Police desktops within the next month. This release will include many enhancements over the PortGIS (Beta version). This rollout is going to have many firsts for us, including a full departmental PortGIS software push, a custom task, .NET software release on the server, and authentication and authorization within the Port network. Below is a list of the added functionality to the PortGIS (Harbor Police) release. I hope to have a video showing some of these features shortly. For now I will include snapshots.

The Harbor Police has been very supportive of our efforts in the GIS department and have been eager to embrace technological advances. LJJ and MR (See docs #315612) are working to bring hardware upgrades, or new computers to support the 1GB minimum software requirements for the PortGIS. There are something like 60x1gb RAM sticks and 30 brand new computers involved. It is a lot of work, and much of the credit for the PortGIS actually running on computers at the Port belongs to them and their teams.

1) Added 2005 in-house half-foot Imagery

1) Added 2005 in-house half-foot Imagery

2) Blocking out imagery outside the San Diego Area

3) Added Find Telephone Task

3) Added Find Telephone Task(click image for more info)

4) Added Find Route Task

4) Added Find Route Task(click image for more info)

5) Added Find Computer Location Task

5) Added Find Computer Location Task(click image for more info)

6) Added Identify Task

6) Added Identify Task (click image for more info)

7) Added StreetViewer Custom Task

7) Added StreetViewer Custom Task (click image for more info)

8) 1)Ability to track vehicles, although still working out the kinks

8) Ability to track vehicles, although still working out the kinks

9) Access to public webcams in the San Diego area

9) Access to public webcams in the San Diego area

10) Customized help menu

10) Customized content and appearance of help

This release is still in development. Our hope is that the Harbor Police will start working with the product to hone in on exactly how they would like this tool to be used. Often when we solve a problem it creates new ones. For example; we can now track many of the vehicles, including those off-duty. So this raises the question: Even when they are on-duty; Is it necessary for the entire department to have access to their locations? Or, should we limit it to certain people, CSF (See docs #315612) and dispatchers. Just a little food for thought.

Amazing7yearOldBreakdancing Zen