Using SRTM data, I want to make different elevation zones with ArcMap. Can any expert guide me with a simple procedure that I can use in ArcMap for preparation of a number of polygons having certain elevation ranges, in my area of interest.
First the SRTM data should be cleaned ( it should n't have no negitvie vaues).
The pixel type or data type should be in signed integer 16 bit . Then the srtm image shows elevation values from 0 to Maximum value of the area. The imported srtm image should be in .img or tiff ( img format is prefarable).
Two methods to show different elevation zones of srtm data
one classfiy the image of SRTM using ---> Layer properties -->Symbology --> Select
Classfied option in left show panel of Layer properties window ...Give your required classes
2nd Method : Convert the SRTM Image into Contours ( Give your contour inteval values as per your requirement (i.e 10, 20, 30 )
Once the output is genarated , classfiy the contour shape file as per your requirement
It takes only 2 steps. First, convert the SRTM data into contour line by using the 'contour' tool. You can set your desired elevation range/ contour interval. Then, use the 'feature to polygon' tool to convert the contour line into polygon.
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