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1 GIS Features are a generic term for points, lines, polygons that might be from arc/info coverages, shapefiles, or arcgis geodatabase feature classes. http://nrm.salrm.uaf.edu/~dverbyla/nrm338/2 Creating points from a text file is a three step process in Arcmap http://nrm.salrm.uaf.edu/~dverbyla/nrm338/3 There are different table formats that you can use in Arcmap. Remember you will not see your table in the table of contents if you have List By Drawing Order http://nrm.salrm.uaf.edu/~dverbyla/nrm338/4 You can use a text file or excel file to create a virtual table in Arcmap http://nrm.salrm.uaf.edu/~dverbyla/nrm338/5 Next save your table to a drive using the Copy Rows geoprocessing tool. If outputting to a folder, use the .dbf extension to output as a dbase file. INFO tables have many restrictions, so do not forget to use the dbf extension when output to a folder. http://nrm.salrm.uaf.edu/~dverbyla/nrm338/6 The sort tool sorts a table by a field, either ascending or descending. The delete field tool allows you to delete many fields at once. The delete rows tool deletes selected rows. http://nrm.salrm.uaf.edu/~dverbyla/nrm338/Short can hold only up to 9,999 7 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/8 Creating points from a text file is a 2 step process in Arcmap. The select features tool will not work until you export your points to a permanent shapefile. http://nrm.salrm.uaf.edu/~dverbyla/nrm338/9 Typically there is a row to contain information for each feature, without a feature ID ArcGIS can not select features…. http://nrm.salrm.uaf.edu/~dverbyla/nrm338/You can create random points inside of polygons. 10 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/The Create Fishnet tool lets you specify rectangular lines that you could later convert to polygons using the Feature to Polygon tool. 11 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/Here we create a fishnet with lines 100 km spaced (100,000 meters). 12 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/http://nrm.salrm.uaf.edu/~dverbyla/nrm338/ 13The Points to Line tool “connects the dots” in this case all points with the same short_int field value will belong to the same line And the order is determined by the ID field. 14 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/15 Notice that lines have length, but not area. Length is disabled if the coordinate system is GCS because the X,Y coordinates are spherical and not planar (meters or feet for example) http://nrm.salrm.uaf.edu/~dverbyla/nrm338/You can create lines from a table with each row containing a position, and distance/bearing to some event 16 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/You can split line using point features, or split line at every line vertex. You can also output line vertices to a point feature class, ether all the vertices, the start and/or ending vertex, dangling vertices, etc. You can convert a polygon to a polyline then convert the polyline to points. 17 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/Here we use the Densify tool to put a vertex every 1 meters along the lines. We use Flip Line to change the direction of each line. 18 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/19 There are geoprocessing tools to convert to and from polygons, lines, points http://nrm.salrm.uaf.edu/~dverbyla/nrm338/http://nrm.salrm.uaf.edu/~dverbyla/nrm338/ 20http://nrm.salrm.uaf.edu/~dverbyla/nrm338/ 2122 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/A geodatabase created in ArcGIS version 10.1 will not work with ArcGIS version 9.0 23 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/A geodatabase feature dataset is a container inside the geodatabase for GIS data having the same extent and coordinate system. 24 http://nrm.salrm.uaf.edu/~dverbyla/nrm338/Geodatabase feature classes are typically inside the feature dataset container. 25


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UAF NRM 338 - GIS FEATURES

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