Global Mapper OverviewPresentation Keywords Global Mapper Overview - Bridge Planning Practitioners...
Transcript of Global Mapper OverviewPresentation Keywords Global Mapper Overview - Bridge Planning Practitioners...
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Global Mapper Overview
Bridge Planning Practitioners WorkshopApril 2012
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Overview
• Drainage Area• Stream Profile• Channel XS Parameters• Banktracking • BPG Tool
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Projection• GIS data files may store data in
different projection systems• GM will convert and display in
the selected projection.
• Tools: Configuration, “Projection Tab”, pick from list, or “Load From File” (PRJ file).
• UTM 11/12, 3TM, 10TM, geographic
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Drainage Area (DA) - Overview1. Locate Map Sheet for Site (HIS) 2. Open Global Mapper and set projection to TM 3. Load GIS Data - DEM, Streams, Bridges, others4. Zoom to extents of DA5. Generate Contours6. Draw DA boundary 7. Modify DA, if necessary8. Large DA – Use Multiple Polygons
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Locate Map Sheet Number• Use HIS• 48 Map Sheets in Alberta
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Open Global Mapper• Open Global Mapper and Set Projection to TM type
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Load GIS Data • Drag and drop files (Bridges, streams, DEM, others)
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Find Bridge Site• Search : “Search By Name”
Type Here
Double ClickHere
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Generate Contours
Enter Contour Interval e.g. 10m for steep areas, 2m for flat areas
Select this to limit contouring to screen area, much faster than “all loaded data”
• File : Generate Contours
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Draw DA Boundary
Area Measurement
Outlet Point
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Multiple Polygons• Can move/edit points/lines/areas
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Stream Profile• Can combine line segments
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Generate Profile from DEM• Source of slopes in HIS; can extract to Excel
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Cross Section Extraction
• B, h, T
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Cross Section Extraction
LIDAR
100m DTM
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DTM – XS Extraction
LIDAR
100m DTM
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Satellite Imagery Measurement
Satellite Image
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Airphoto Imagery Measurement
GeoreferencedAirphoto
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Banktracking (BIM 2)
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BPG Tool
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LiDAR Coverage
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Other Layers
• Maps (1:50000, 1:250000)• NWPA • WSC Gauges• Storms• TWP Grids• RoWs• Provincial Highways• Local Roads • Alberta/Edmonton Boundary• River Basins• Import/Export to Excel/DGN/DWG/Google Earth
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QUESTIONS?