cdm/src/main/java/ucar/nc2/ft2/simpgeometry/SimpleGeometryReader.java
public Line readLine(String name, int index) {
	
		Variable linevar = ds.findVariable(name);
		if(linevar == null) return null;
		Line line = null;
		
		// CFConvention
		if(ds.findGlobalAttribute(CF.CONVENTIONS) != null)
			if(ucar.nc2.dataset.conv.CF1Convention.getVersion(ds.findGlobalAttribute(CF.CONVENTIONS).getStringValue()) >= 8)
				line = new CFLine();
		
		if(line == null) return null;
		else return line.setupLine(ds, linevar, index);
	}
public Line readLine(String name, int index) {
	
		Variable linevar = ds.findVariable(name);
		if(linevar == null) return null;
		Line line = null;
		
		// CFConvention
		if(ds.findGlobalAttribute(CF.CONVENTIONS) != null)
			if(ucar.nc2.dataset.conv.CF1Convention.getVersion(ds.findGlobalAttribute(CF.CONVENTIONS).getStringValue()) >= 8)
				line = new CFLine();
		
		if(line == null) return null;
		else return line.setupLine(ds, linevar, index);
	}
Returns a Line given a variable name and the geometric index. If the Line is not found it will return null. If the Line is a part of the Multi-Line, it will return the head
(the first Line in the series which constitutes the Multi-Line).

@param name of the variable which holds the Line
@param index of the Line within the variable
@return a new line with all associated information