Convert a WMS layer to a vector Feature Class in ArcGIS – Karl Hennermann

Sometimes you have access to data through a WMS service, but you want the data as vector features. In this post I show how to extract vector features from a WMS layer using ArcGIS Desktop. I’m still learning how to use ArcMap 10.1 the program, so the question is, where do I find the Export data frame tool/option/command? or is the Menu->,File->,Export Map the one I’m looking for? That didn’t work, sorry. Questions: Switch to editing for which shapefile (step 6.2)? What’s next after step 6.6? The instructions are not complete? I did use your updated method again for another project and this time it worked like a charm! Thank you. Sometimes you have access to data through a WMS service, but you want the data as vector features. In this post I show how to extract vector features from a WMS layer using ArcGIS Desktop. Before extracting polygons from a WMS please make sure you are allowed to do this, e.g. by checking the WMS provider’s website for terms and conditions, or contact them. Many WMS do not allow you to create derivative data. This procedure only works for binary data (data with a yes/no classification, e.g. areas that are flooded vs areas that are not flooded). If your WMS data has more than two classes this procedure does not work. Load the resulting PNG into ArcMap (Menu >, File >, Add Data). It should show as a black and white image and align correctly with the WMS and other layers. Create two new empty feature classes, one polygon and one polyline. These will contain the vectorized features. You can create these as Geodatabase feature classes or Shapefiles. They have to be in the same Geodatabase or folder, respectively. In the ArcScan toolbar go to Vectorization >, Options. Set ‘Outline’. Make sure the Foreground color is set to the color of the areas you want to vectorize. (Click Toggle Colors to change). Click Vectorization >, Generate Features. In the new window select in which (polygon and line) feature classes to store the vectorization result. Click OK. I’m still learning how to use ArcMap 10.1 the program, so the question is, where do I find the Export data frame tool/option/command? or is the Menu->,File->,Export Map the one I’m looking for? That didn’t work, sorry. Questions: Switch to editing for which shapefile (step 6.2)? What’s next after step 6.6? The instructions are not complete? ArcGIS issues: 'The computer you chose is not a valid license server or is running an older version of the License Manager' Source.


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Last Modified: April 23, 2016 @ 4:03 am