[GIS] Convert high resolution raster (tiff) file into single polygon

arcgis-10.4arcgis-desktopgeotiff-tiffraster

My objective is to clip a single shapefile based on multiple tiff files. Consider that we have a map of a country and we want to clip the states that have residential areas. The residential areas are represented by multiple tiff files.

My current method employs converting tiff into shapefile using the Raster to Polygon tool and using dissolve tool to get a single polygon (iteratively done with multiple tiffs and merging them together to get the final polygon). However this route takes a long processing time and results in freezing/ sudden exit from ArcGIS 10.4.1 application.

Current procedure

  1. Raster-Polygon : Raster is single banded with values ranging from 0-250 with 30m x 30 resolution. The resulting polygon is very large with several polygons.
  2. Dissolve (each tiff)
  3. Merge
  4. Clip the single shapefile using the merged polygon feature

I am assuming there should be an efficient way to capture the boundary/ extent into a polygon and then merge these polygons, instead of converting and dissolving the polygons from each raster file.

Best Answer

There is a tool in the 3D Analyst toolbox called Raster Domain that does exactly this.

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