ta lab hour feb9 2011 bolin
DESCRIPTION
Topography of Ancient Roman Spring 2011 Teaching Assistance lab hourTRANSCRIPT
How to Build Rome in 1 Day by Bolin Zhang is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
ON OUR WEBSITE
WordPress WidGets Poll
What do you want for your project?
Or, Webs [under construction]
http://www.topography-of-ancient-rome.webs.com
Photo Credit http://linuxdev.ats.ucla.edu/ HyperCities Timeline Map Collections
MEET THE PROS @ DUKE
Duke ISIS Mapping Team
http://isismapping.org/duketour/
Multimedia Mapping: Muhuru Bay project
http://muhurubay.org/MuhuruWeb/Welcome.html
Visualizing Art, Law, and Markets
http://vis.duke.edu/
Visualization Technology Group
GIS Lab Perkins Lib 226
Photo is from RedGraph: http://www.ibiblio.org/hhalpin/homepage/presentations/visforum/
UNFOLD YOUR IMAGINATION
What happened to Yosemite Valley?
These maps are images from the chapter titled “Historical Maps in GIS”, from the book, Past Times, Past Place: GIS for History, ERSI Press, 2002. From: www.davidrumsey.com
REVISIT THE OLD VALLEY
http://www.davidrumsey.com/view/3d-gis
TOOLKIT
ArcView
Adobe Photoshop
MrSID Raster
Google Earth/Sketch Up
…
ArcScene, ArcGlobe, ArcEngine, 3d Max, AutoCAD
…
Andriod, iPhone App
And More…Questions??
Language: VRML,KML, XML,Python Free Goodies: Icon Archive, 3d Warehouse;Tourweaver; ESRI resource center Duke GIS Lab;
From: www.davidrumsey.com
OBTAIN DEM DATASET
USGS: Find Data, Elevation
http://edc2.usgs.gov/geodata/index.php
DEM Files Viewer:
http://www.ivtools.org/vhclmaps/demviewer.html
Data and GIS service @ Duke:
http://library.duke.edu/data/collections/index.html
ArcGIS 3D Analyst Tutorial
http://www.webhelp.esri.com/arcgisdesktop/9.3/pdf/3D_Analyst_Tutorial.pdf
Derivative map from image 2 draped on a 10-meter DEM in ERDAS Virtual GIS. (Source for all three images: CGS collected and interpreted data. Additional sources as noted in figure above.) Photo Credit: The Colorado Geological Survey Maps Development With GIS 2004
GIS EXPLORER FOR EVERYONE
Download the offline version ArcGIS Explorer and get the add-ins
Intro Video http://www.esri.com/software/arcgis/explorer/demos.html
Cheat sheets @ its Blog
http://blogs.esri.com/Info/blogs/arcgisexplorerblog/default.aspx
Create your maps/models off line
Share them with your Online Account
A SEAMLESS GIS/GOOGLE WORKFLOW 3D Buildings • Using Sketch Up to build the building model • Save the file with KMZ format (tour video will be zipped in the final KMZ file) • If you still want to use 3D Warehouse to save loading time, save the placemarks, tours,
page info, and polygons in a kml file. But remember to check each placemark with the model you already upload to 3D Warehouse.
3D Terrian • Using ArcGIS Scene to create a TIN on a topo layer. (import the base .shp contour file
first) • Import the imaginary file (e.g. an old map), make show the two layers are on the same
scale and hopefully the exact same matching top-down location
• Drape the new layer by right click on PropertiesàBase Height Tabàobtain height info from the TINàApplyàPreviewàOKàExport Scene in 3Dà”Hello, Earth!” VRML 3D Terrian
ON THE MARGIN
Or, Creating VRML w/DEM
• SDTS fileàDEM http://data.geocomm.com/dem/sdts2dem.html (GeoComm also provides dataset and opensource softwares for GIS!)
• DEMàGrid ArcGIS Toolbox
• ArcScene, Add Data w/ the Grid created by toolbox
• 3D: Change Scene PropertiesàAdd up Vertical Exaggeration
• Base Heights tabàobtain heights from grid dataàApply
VRML Authoring and Crafting
• A format that can contain 3D models like COLLADA(sketchup export .dae file)
• View: Free WRL: http://freewrl.sourceforge.net/
• Edit: Seamless 3D: http://www.seamless3d.com/download/
• Mashlab: http://meshlab.sourceforge.net/
• Other: http://www.web3d.org/x3d/vrml/tools/viewers_and_browsers/
• http://www.ai.sri.com/geovrml/ Photo Source ”Berlin-3D”from RSS GmbH, Potsdam/München, DRL Berlin-Adlershof, and 3D Geo GmbH, Potsdam
VISUALIZATION OF URBAN INFORMATION Virtual 3D city models serve as generic tools for an increasing number of application areas in administration and industry that demand for visualizing geoinformation. For that reason, the requirements made on the visualization techniques vary. In the Berlin project, we explicitly address several visualization techniques. Photorealistic Visualization In the context of tourism, entertainment, or public participation a high degree of photorealism is required (Fig. 3). For instance, if the aim is to give a realistic impression of a planned environment, the quality of a 3D visualization is directly related to the similarity between the virtual city model and the actual result after implementation of the planning. To enable real-time rendering of large-scale 3D city models, their geometric complexity has to be reduced in order to guarantee high and constant frame rates. For virtual environments, geometry or texture related optimization and multiresolution algorithms and data structures can be applied to achieve real-time rendering even for complex virtual 3D city models (e.g., Buchholz & Döllner 2005b, Willmott et al. 2001).
Fig. 3: Example of a photorealistic visualization (Source:”Berlin-3D”from RSS GmbH, Potsdam/München,
DRL Berlin-Adlershof, and 3D Geo GmbH, Potsdam). Information Visualization For applications in information visualization and data mining, photographics details of buildings are not of primary interest. Instead, the 3D representation of a city model serves as a medium to convey spatial-related thematic information in a comprehensive way (Müller & Schumann 2002). In the context of urban planning, e.g., thematic building information such as vacancy, ownership, or year of construction has to be considered (Buchholz & Döllner 2005a). Here, an abstracted, simplified visual design is required that typically encodes planning status, planning variants, or related planning information (Fig. 4).