on December 27, 2022

How to find lowest elevation change using raster data and w.r.t muliple polygons

Geographic Information Systems

How to create points representing the highest or lowest elevations within polygon features?

To do this, Open ArcMap and navigate to ArcToolbox > Spatial Analyst Tools > Zonal > Zonal Statistics. This generates a new raster that changes all the cell values in each polygon feature to the value of the highest elevation within that polygon feature.
 

How do you extract a polygon from a raster?

Right-click Identity Function > Insert Function > Clip Function. This opens the Raster Function Properties window. Change Type to Inside. In the Clip section, under Clipping Geometry/Raster, browse to the desired polygon features, and check the Use Input Features for Clipping Geometry check box.
 

How do you join a raster to a polygon?

Convert the integer type raster to a polygon feature class using the Raster to Polygon tool.

  1. Navigate to ArcToolbox > Conversion Tools > From Raster > Raster to Polygon.
  2. In the Raster to Polygon window, specify the raster created in Step 2 in the Input raster field.