cdm/src/main/java/ucar/unidata/geoloc/ogc/WKTParser.java
public double getParameter(String name) {
    Double val = (Double) parameters.get(name.toLowerCase());
    if (val == null) {
      throw new IllegalArgumentException("no parameter called " + name);
    }
    return val.doubleValue();
  }
public double getParameter(String name) {
    Double val = (Double) parameters.get(name.toLowerCase());
    if (val == null) {
      throw new IllegalArgumentException("no parameter called " + name);
    }
    return val.doubleValue();
  }
Get the value of the projection parameter. An IllegalArgument exception
is thrown if the parameter is not found.

@param name The name of the parameter. Case is ignored.
@return The value of the parameter, as a double.