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Terrain Representation Workshop Introduction
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Focus of the workshop Concepts and techniques involved in creating mono- and multicolor cartographic displays of the terrain as seen in plan view
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Content of the workshop Sources of DEM data used to create terrain representations Transforming raw data onto a map projection surface through raster resampling Principles behind analytical hillshading Hypsometric tinting schemes How to combine tinting with hillshading Advanced hillshading and layer tinting techniques Creating an appropriate legend for your map Outputting and printing the maps
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Resources Materials to teach about terrain representation –A one-day workshop on or teach yourself Lectures Exercises Data Styles Available on mappingcenter.esri.com
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Agenda DEM Data Sources Datum Transformations Raster Resampling Hillshading and Layer Tinting Advanced Hillshading Techniques Modifications to Layer Tints Terrain Representation Legends Bump Mapping Printing and Outputting Conclusion
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Final Project We would like you to create a final project map that combines what you learned in the workshop with a topic of special interest to you –Use data that you now know you can download –Use Swiss hillshading – combine it with MDOW if appropriate –Add an appropriate layer tint –Create a legend for your map –Add a title, your name and text describing the data sources
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Detailed agenda - 1 LECTURE: Introduction (TerrainRep_2008_Introduction.ppt) –Introduction to the workshop DEMO: SPATIAL ANALYST EXERCISE: Enabling the Spatial Analyst Extension (TerrainRep_2008_SpatialAnalyst.doc) LECTURE: DEM Data Sources (TerrainRep_2008_DEMDataSources.ppt) –Data –Sources for DEMs –Structure of DEMs –Linear units vs. angular units –Raster data other than elevation –Discrete raster data (land cover) EXERCISE: Working with Etopo2 Data (TerrainRep_2008_Etopo2Data.doc)
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Detailed agenda - 2 LECTURE: Datum Transformations (TerrainRep_2008_DatumTransformations.ppt) –NAD 83 Adjustment of NAD 27 –Latitude, Longitude on Topographic Maps –Latitude, Longitude Shifts in Arc Seconds –UTM or State Plane NAD27 to NAD83 Grid Conversion LECTURE: Raster Resampling (TerrainRep_2008_RasterResampling.ppt) –DEM manipulation –Datum Transformation –Raster Resampling with Nearest Neighbor –Map Projection –Display with Bilinear Interpolation EXERCISE: Projecting the Etopo2 Data (TerrainRep_2008_ProjectEtopo2Data.doc)
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Detailed agenda - 3 LECTURE: Hillshading and Layer Tinting (TerrainRep_2008_HillshadingAndLayerTinting.ppt) –Hillshading –Mathematical method –Azimuth (image inversion), altitude (with examples), shadows –Contrast stretching (standard deviation stretch) –Layer tinting EXERCISE: Creating a Hillshade (TerrainRep_2008_CreateAHillshade.doc) EXERCISE: Contrast Stretching a Hillshade (TerrainRep_2008_ ContrastStretchAHillshade.doc) EXERCISE: Setting the Display Resampling Method (TerrainRep_2008_ DisplayResampling.doc) EXERCISE: Layer Tinting the Hillshade Using Classified Values (TerrainRep_2008_LayerTintTheHillshade.doc) EXERCISE: Displaying the Layer Tint Over the Hillshade (TerrainRep_2008_ DisplayTheLayerAndHillshade.doc)
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Detailed agenda – 4 LECTURE: Advanced Hillshading Techniques (TerrainRep_2008_.ppt) –Swiss Hillshade –MDOW Hillshade –Blue-yellow Hillshade EXERCISE: Creating a Swiss Hillshade (TerrainRep_2008_CreateSwissHillshade.doc) EXERCISE: Displaying a Swiss Hillshade (TerrainRep_2008_DisplaySwissHillshade.doc) EXERCISE: Modifying the color ramps (TerrainRep_2008_ModifyColorRamps.doc) EXERCISE: Creating an MDOW Hillshade (TerrainRep_2008_MDOWHillshade.doc) EXERCISE: Combining the Swiss & MDOW Hillshades (TerrainRep_2008_CombineTheHillshades.doc) EXERCISE: Symbolizing the Crater Lake Bathymetry (TerrainRep_2008_ SymbolizeTheBathymetry.doc) EXERCISE: Creating a Blue-Yellow Hillshade (TerrainRep_2008_CreateABlue-YellowHillshade.doc)
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Detailed agenda - 5 LECTURE: Terrain Representation Legends (TerrainRep_2008_TerrainRepresentationLegends.ppt) EXERCISE: Create a Terrain Representation Legend (TerrainRep_2008_TerrainRepresentationLegend.doc) LECTURE: Bump Mapping (TerrainRep_2008_BumpMapping.ppt) –Bump Mapping –What it is & why to use it –How you do it EXERCISE: Create a Bump Map (TerrainRep_2008_BumpMap.doc) LECTURE: Printing and Outputting (TerrainRep_2008_PrintingAndOutputting.ppt) –Printing and Output –JPG or TIF with a world file –Flattening the rasters EXERCISE: Flatten the Rasters (TerrainRep_2008_FlattenTheRasters.doc) EXERCISE: Finish Your Map (TerrainRep_2008_FinishYourMap.doc)
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