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Aktuelle Technologien und Innovationsfelder der Geoinformatik standen Anfang Juli 2017 im Fokus des AGIT Symposiums an der Universität Salzburg.
Foto: Simon P. Haigermoser
geospatial@online
Symposium und EXPO - Angewandte Geoinformatik
vom 5. bis 7. Juli 2017 an der Naturwissenschaftlichen Fakultät der Uni Salzburg.
Foto: Hans-Christian Gruber
geospatial@online
Symposium und EXPO - Angewandte Geoinformatik
vom 5. bis 7. Juli 2017 an der Naturwissenschaftlichen Fakultät der Uni Salzburg.
Foto: Hans-Christian Gruber
geospatial@online
Symposium und EXPO - Angewandte Geoinformatik
vom 5. bis 7. Juli 2017 an der Naturwissenschaftlichen Fakultät der Uni Salzburg.
Foto: Hans-Christian Gruber
geospatial@online
Symposium und EXPO - Angewandte Geoinformatik
vom 5. bis 7. Juli 2017 an der Naturwissenschaftlichen Fakultät der Uni Salzburg.
Foto: Hans-Christian Gruber
Aktuelle Technologien und Innovationsfelder der Geoinformatik standen Anfang Juli 2017 im Fokus des AGIT Symposiums an der Universität Salzburg.
Foto: Simon P. Haigermoser
geospatial@online
Symposium und EXPO - Angewandte Geoinformatik
vom 5. bis 7. Juli 2017 an der Naturwissenschaftlichen Fakultät der Uni Salzburg.
Foto: Hans-Christian Gruber
Aktuelle Technologien und Innovationsfelder der Geoinformatik standen Anfang Juli 2017 im Fokus des AGIT Symposiums an der Universität Salzburg.
Foto: Simon P. Haigermoser
Spc. Dakota Maddox, a geospatial engineer, left, Sgt. Jesse Albert, an electronic warfare specialist, center, and Spc. John Selmen III, an air defense battle management system operator, right, all three with Headquarters and Headquarters Battery, Task Force Pegasus Fires, have fun while on a carnival ride at the Houston Livestock show and Rodeo, March 5. Soldiers and their families from Fort Hood, Texas were treated to a barbecue lunch; carnival rides and games; and seats at the rodeo and concert (U.S. Army photo by Sgt. Garett Hernandez, Task Force Pegasus Fires Public Affairs).
geospatial@online am 06. Juli 2017 an der NaWi der Universität Salzburg.
Bilder: Hans-Christian Gruber
geospatial@online
Symposium und EXPO - Angewandte Geoinformatik
vom 5. bis 7. Juli 2017 an der Naturwissenschaftlichen Fakultät der Uni Salzburg.
Foto: Hans-Christian Gruber
As most of the pre-1980 Mount St. Helens terrain elevation does not exist in the form of a DEM, or Digital Elevation Model, I am having to recreate that DEM myself using geospatial data processing software. For the last few days I have been immersing myself into the workings of QGis - an open source geospatial data processing application very similar to the ArcGIS software professional mapping agencies and the USGS use, to create and author DEM and other forms of geospatial data. Yesterday, I began a series of tests on working with ESRI Shapefile data and creating test contour maps, then importing them in another open source geospatial data processing application known as SAGA. It is here, where I applied the elevation data in a TIN (triangulated interface network) format to create and compile a 3D model of those test contour maps.
As a test of those learned skills, earlier this afternoon I decided to trace contours in a small area going up from Spirit Lake's pre-eruption elevation contour of 3,198 feet. For reference, today's lake elevation is 3,406 feet! The small area I chose was the dividing ridge between the east and west lobes of Spirit Lake. Once I selected the area in question, I then proceeded to trace every contour on one gridded section of that ridge in a 1958 topographic map, using a vector layer, with each contour assigned an elevation point corresponding to the 80-foot contour interval of the source reference map. (It was a PAIN IN THE ARSE to do this, since I had to convert the numbers in feet, to meters every time!).
After tracing the final contour in QGis, I then exported it as an ESRI Shapefile, then imported it into SAGA, to which I then did a triangulating extrapolation of that contour data into a working digital elevation model. That elevation model's dataset was then loaded back into QGis as a DEM file, and subsequently exported as a GeoTIFF.
Once a brief test was initiated in FSX, I was ASTOUNDED at the height difference between present-day Spirit Lake and the former shoreline. It shows up best at the lakeshore (where I had placed an exclusion flatten of the lake to eliminate scenery artifiacting) on the dividing ridge, and where Harry Truman's resort is.
Now the fun part begins... Tracing a crap-ton of contour data, then extracting it into height map data, and then finally, off to the SIM.
Now for a few images showing the sequence of steps I followed, then a series of screenshots in FSX showing the change in topography.
FORT BELVOIR NORTH AREA, Va. — Brig. Gen. Peter "Duke" DeLuca (center right), U.S. Army Corps of Engineers North Atlantic Division commander, discusses the delivery method for the National Geospatial-Intelligence Agency (NGA) Campus East project with visiting Corps of Engineers and Department of Defense officials during a meeting at the project's Integrated Program Office here, Oct. 8, 2010. Along with NGA, Baltimore District is managing design and construction of the $1.7 billion NGA Campus East project. (U.S. Army Corps of Engineers photo by Marc Barnes)
geospatial@online am 06. Juli 2017 an der NaWi der Universität Salzburg.
Bilder: Hans-Christian Gruber
Robert Cardillo, Former Director, National Geospatial-Intelligence Agency testifies before the Aviation and Space Subcommittee of the Senate Commerce, Science, and Transportation Committee during a hearing titled “The Emerging Space Environment: Operational, Technical, and Policy Challenges.”, Tuesday, May 14, 2019, at the Dirksen Senate Office Building in Washington. Photo Credit: (NASA/Bill Ingalls)