![]() For more information, refer to ArcGIS Pro Web Help: Reclass by ranges of values. In this example, the value (≤ 10) represents slopes with the slope degree range of 0 to 10, while the value (≤ 41.2193412.) represents slopes with the slope degree range more than 10 degrees to 41.22 (the maximum value). Set class ranges and class breaks according to the data and the range required. In this example, the classes are divided into 2 and the Upper value is set to (0 - 10) and (>10) respectively. Set the Class breaks by changing the Upper value manually.Set the number of Classes and Method to Manual Interval.In the Symbolgy pane, set Primary symbology drop-down to Classify.Right-click the layer created from the Slope tool and click Symbology.Invert selection and delete non-black stuff. The procedure is: First open the map in an image editor (GIMP), select by colors with some tolerance and select the black color. Change the symbology of the slope map to classify symbology according to the desired range value of the slope degree. GRASS GIS has a tool to convert raster lines to vector. ![]() Ready to your Raster RGB image is a Float file format, now Classify float image. Raster to a floating window appears, select Input Raster(US.jpg) and browse output location, then click OK. Now select Raster to float in the search result. The vector layer will likely contain thousands of individual polygons that will not be efficient to process. Open a Search pane, in the search box search Raster to float. It is rarely a good idea to convert continuous raster data to a vector layer. For more information, refer to ArcGIS Pro Web Help: Slope. The Raster to Polygon tool will convert your raster layer to a vector later with an attribute table. Use the Slope tool from Spatial Analyst Tools > Surface to create the slopes from each cell of the DEM.For more information, refer to ArcGIS Pro Web Help: Extract by Mask. In ArcGIS Pro, use the Extract by Mask tool to extract the desired region of the study area in the DEM file.In this example, slopes with a slope degree of more than 10 degrees are converted to a polygon feature class. It can convert a raster to points or polygons (conversion to lines is not yet supported, although it is possible using the r.to.vect module in GRASS). These instructions describe how to convert slopes with a certain range of slope degree from a DEM file to a polygon feature class. Convert a raster to a vector (points, lines, or polygons) Description This function is a potentially faster version of the function rasterToPolygons in the raster package. ![]() The converted polygon feature layer contains the area information which can be used for land development.For instructions on how to do this in ArcMap, see: How To: Convert slopes with a certain range of slope degree from a DEM file to a polygon feature class in ArcMap In ArcGIS Pro, DEM files can be used to determine the area covered by slopes with a certain range of slope degrees by converting the DEM file to a polygon feature class. ![]()
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