About generating features from automatic vectorization
Once you have determined the best possible settings for vectorization, it is time to create vector features. You can create features using the Generate Features command. This command opens the Generate Features dialog box, which allows you to choose the target line and polygon layers. There are also options to generate features for the currently selected cells only and choose whether to have the new features selected after they are generated.
When using the centerline vectorization method, the Generate Features dialog box will require that the target line layer be chosen. Generating polygons in cases where the maximum line width is exceeded is optional. You can also choose to save the average width of each line feature to an existing field in the target line layer.
When using the outline vectorization method, the Generate Features dialog box will require that the target polygon layer be chosen. Generating lines in cases where the maximum number of vertices in a polygon is exceeded is optional.
You can automatically vectorize a subset of the raster layer by using the Generate Features Inside Area tool. This tool allows you to interactively draw a polygon shape on the map that is used to define an area inside which all cells are vectorized. When you have completed defining this area with the pointer, double-click to finish the drawing. This displays the Generate Features dialog box. The contents of the Generate Features dialog box reflect the current vectorization method.
The Generate Features Inside Area tool is useful when you only want to vectorize a certain portion of the raster. All the options provided by the Generate Features command are also available when using this tool.