GIS

GIS Tech News (#50)

15 Jan, 2008


General Lee's Bird's Eye View

Using GIS to shed new light on the Battle of Gettysburg.

When Anne Knowles, an associate professor of geography at Middlebury College in Vermont, announced she could see the battle of Gettysburg from Robert E. Lee's point of view, she meant it literally.

"I'd often wondered what Lee could actually see at Gettysburg," she said. "Historians have commented that, when Lee's Confederate troops and Meade's Union forces arrived at this little-known town in Pennsylvania, they didn't know the ground very well and didn't have good maps of the area. This suggests to a geographer like me that the field commanders would have to make deployment decisions based on a quick visual survey of the site and scout reports."

She did travel to the site of the famous three-day battle to experience the landscape firsthand. She had walked across fields in the steps of Pickett’s Charge, where more than 4,500 soldiers perished in two hours. She had climbed Little Round Top, a rugged slope where the Union side undertook a downhill bayonet charge to repel a Confederate assault. Read more>>


Building a Site Drawing with GIS (From the Trenches AutoCAD Tutorial)

By Salvatore Napolitano

Building a preliminary site drawing from GIS will expedite your work because you can develop a conceptual site plan while waiting for the surveyor, wetlands scientist, and geologist. In addition, the conceptual drawing can provide an early warning of what may be found when the site is investigated. A GIS plan will disclose areas of concern within the site.

You can look at a blank page or you can go the Web and build on an existing site plan and draft in your proposed tanks, buildings, and pipelines. But without GIS you will not know whether to expect groundwater at four feet or at 400 feet! That may put you at a disadvantage. Where are the wetlands? Do you expect to find rock, and how deep is it to bedrock? These are just some of the data you can add to your drawing while sitting at your keyboard. Read more>>


UPCOMING GIS EVENTS

MAPPS 2008 Winter Conference
January 31-February 4, 2008
Rancho Mirage (Palm Springs), California
Sessions on technical trends in GIS, remote sensing, photogrammetry, LIDAR, and new and potentially disruptive technologies will be among agenda topics at the MAPPS annual winter conference. Read more>>

2008 ESRI FedUC: The Geographic Advantage for the Nation
February 20-22, 2008
Washington, DC
The ESRI FedUC brings together GIS analysts, program managers, and agency directors from across the federal government to share information on the "state of the nation" for managing and serving geospatial knowledge. Read more>>

Integrating GIS & CAMA Conference
February 25-28, 2008
New Orleans, LA
The 12th Annual GIS/CAMA Technologies Conference, jointly sponsored by URISA and the International Association of Assessing Officers (IAAO), is designed to foster collaboration and integration of data, technology, and functionality. The program will help assessment and appraisal professionals and GIS managers to visualize how they can work more effectively through the use of technology. Read more>>

Cadalyst's complete list of upcoming events is always available on our Web site. Cadalyst's sister publication, Geospatial Solutions, also offers a full calendar of GIS-related events.



AutoCAD Tips!

Lynn Allen

Autodesk Technical Evangelist Lynn Allen guides you through a different AutoCAD feature in every edition of her popular "Circles and Lines" tutorial series. For even more AutoCAD how-to, check out Lynn's quick tips in the Cadalyst Video Gallery. Subscribe to Cadalyst's free Tips & Tools Weekly e-newsletter and we'll notify you every time a new video tip is published. All exclusively from Cadalyst!
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