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Using the Aggregate Tool in ArcGIS to Reduce the Resolution of a Raster 2 года назад


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Using the Aggregate Tool in ArcGIS to Reduce the Resolution of a Raster

This Lightning GIS video demonstrates how to reduce the resolution of a raster (specifically a digital elevation model or DEM) using the Aggregate Tool from the Spatial Analyst Toolbox in ArcGIS. Reducing the raster cell size will result in a decrease in your raster resolution but it will also make the raster file size significantly smaller which will result in the file working faster in ArcMap. Table of Contents: 00:00 - Introduction 00:12 - What is a Raster? 00:58 - Raster Resolution 02:04 - Aggregate Tool 02:21 - Changing Cell Size 04:09 - ArcMap Demo 04:27 - Determining the Resolution of your DEM 05:15 - Find and Open the Aggregate Tool 05:53 - Aggregate Tool Dialog Box 08:08 - Aggregate Results 08:39 - Compare DEM Quality 09:58 - Compare DEM File Sizes 10:37 - Comparing Draw Speed in ArcMap 11:33 - Outro

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