Improve Accuracy with Rubbersheeting Manipulate Multispectral Imagery and DEM Data to Fit Projects Needs Two rubbersheeting algorithms are available: polynomial and triangulation. Use the triangulation algorithm when working with global positioning systems (GPS) and surveyed control points. Use the grid option when establishing a regular array of control points. Improve accuracy, and get more predictable results using rubbersheeting. Multispectral and DEM data must often be edited before it can be used eciently in a project. Available editing operations include transforming data from native coordinate systems when using AutoCAD Map D or AutoCAD Civil D software. Crop these images to conform to your project area, and merge images to cover larger areas with a single image. Change image density to handle images more eciently. Save time by adapting multispectral and DEM data to the coordinate system used by the project. Make more ecient use of large multispectral images by reducing them to cover just the area needed for a project. Enhance Presentations by Capturing the Moment With the Image Capture feature designers can create a TIFF-format snapshot of color-mapped imagery at the same insertion point, resolution, and scale as the original. Extend DEM or multispectral data analysis for use in other applications such as Microsoft
® Word and PowerPoint
® programs, and AutoCAD software. Use the snapshot to produce “what-if” scenarios and enhance presentations. Use Elevation Data for Better Analysis Digital elevation model (DEM) data provides readily available surface information for large areas. Analyze DEM data for elevation, slope, and aspect. Use color-mapped DEM files for interpretation and map composition. Take advantage of easily obtained, low-cost data for timely and eective analysis and presentations. Use DEM data as input for site suitability analysis. Elevation data is supported in USGS DEM, DTED, and ESRI
® GRID formats.
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