ta lab hour feb9 2011 bolin

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Topography of Ancient Roman Spring 2011 Teaching Assistance lab hour

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Page 1: Ta Lab Hour Feb9 2011 Bolin

How to Build Rome in 1 Day by Bolin Zhang is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

Page 2: Ta Lab Hour Feb9 2011 Bolin

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

Page 3: Ta Lab Hour Feb9 2011 Bolin

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/

Page 4: Ta Lab Hour Feb9 2011 Bolin

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

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REVISIT THE OLD VALLEY

http://www.davidrumsey.com/view/3d-gis

Page 6: Ta Lab Hour Feb9 2011 Bolin

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

Page 7: Ta Lab Hour Feb9 2011 Bolin

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

Page 8: Ta Lab Hour Feb9 2011 Bolin

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

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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

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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).