The majority of formats require the same two steps for visualization on a Lightspeed view. To visualize IGRF Magnetic North data:

  1. Decode the data into an ILcdModel using an ILcdModelDecoder.

  2. Create an ILspLayer for the ILcdModel and add it to the ILspView. 

//First create the model
//Decode the model by passing the source to the model decoder
ILcdModelDecoder decoder =
    new TLcdIGRFModelDecoder();
ILcdModel model = decoder.decode("Data/magneticnorth/igrf");

//Create a layer for the model with default styling
ILspLayer layer = TLspShapeLayerBuilder.newBuilder()
                                       .model(model)
                                       .build();

//Add the layer to the Lightspeed view (an ILspView)
view.addLayer(layer);

This results in a IGRF Magnetic North layer with default styling. See Visualizing Vector Data for more information about visualizing and styling vector data.