cdm/src/main/java/ucar/nc2/dataset/CoordTransBuilder.java
static public VariableDS makeDummyTransformVariable(NetcdfDataset ds, CoordinateTransform ct) {
    VariableDS v = new VariableDS( ds, null, null, ct.getName(), DataType.CHAR, "", null, null);
    List<Parameter> params = ct.getParameters();
    for (Parameter p : params) {
      if (p.isString())
        v.addAttribute(new Attribute(p.getName(), p.getStringValue()));
      else {
        double[] data = p.getNumericValues();
        Array dataA = Array.factory(DataType.DOUBLE, new int[]{data.length}, data);
        v.addAttribute(new Attribute(p.getName(), dataA));
      }
    }
    v.addAttribute( new Attribute(_Coordinate.TransformType, ct.getTransformType().toString()));

    // fake data
    Array data = Array.factory(DataType.CHAR, new int[] {}, new char[] {' '});
    v.setCachedData(data, true);

    return v;
  }
static public VariableDS makeDummyTransformVariable(NetcdfDataset ds, CoordinateTransform ct) {
    VariableDS v = new VariableDS( ds, null, null, ct.getName(), DataType.CHAR, "", null, null);
    List<Parameter> params = ct.getParameters();
    for (Parameter p : params) {
      if (p.isString())
        v.addAttribute(new Attribute(p.getName(), p.getStringValue()));
      else {
        double[] data = p.getNumericValues();
        Array dataA = Array.factory(DataType.DOUBLE, new int[]{data.length}, data);
        v.addAttribute(new Attribute(p.getName(), dataA));
      }
    }
    v.addAttribute( new Attribute(_Coordinate.TransformType, ct.getTransformType().toString()));

    // fake data
    Array data = Array.factory(DataType.CHAR, new int[] {}, new char[] {' '});
    v.setCachedData(data, true);

    return v;
  }
Create a "dummy" Coordinate Transform Variable based on the given CoordinateTransform.
This creates a scalar Variable with dummy data, and adds the Parameters of the CoordinateTransform
as attributes.
@param ds for this dataset
@param ct based on the CoordinateTransform
@return the Coordinate Transform Variable. You must add it to the dataset.