This example shows the use of a WFS service rendered using the OpenLayers vector library.
- -- This is an example that shows rendering a WFS service using OpenLayer vectors in the browser. The OpenLayers code will download the GML - from the WFS service for each layer, parse it and create features using the OL vector library to draw the features on the map. For - more information on the vector library, please visit vector support wiki. - In this example there are 4 layers shown on the map. The base layer and parcel layer are created from a WMS service using the OpenLayers.Layer.WMS object. - The streams, roads, and plat layers are drawn from a WFS service using the OpenLayers.Layer.WFS object. -
- -- Rendering WFS layers into vectors is possible, but you need to be cautions when showing the features on the map. Testing has shown that when - you renderer more than 200 vectors in the browser the performance decreases dramatically. Also features that have a lot of vertices - can cause performance issues. In this example the parcel layer is rendered as a WMS layer because at the time of developing this example - there where a handful of features that had too many vertices to render without killing the browser resources. - - There are a number of properties that can be set for each WFS layer, such color and line weight using style properties such as strokeColor and strokeWidth. - You can also get feature attributes from the WFS services using the extractAttribute property. View the source to see the example code. -
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