[OpenMap Users] Reading VPF

Hi all

I'm beginner in using openMap.
My problem is that I have to read a VPF and extract
information about featurs(such as point polyline and
so on) without starting openMap.

I tryed with tis code:

/***************************************************/

public TryReadVPF()
{
try
{
Properties prop= new Properties();

prop.setProperty("vmapPol.class","com.bbn.openmap.layer.vpf.VPFLayer");
prop.setProperty("vmapPol.prettyName","VMAP
Layer");

prop.setProperty("vmapPol.vpfPath","C:/VPF/VpfItem049/EURNASIA");

prop.setProperty("vmapPol.searchByFeature","true");

prop.setProperty("vmapPol.defaultLayer","vmapCoastline");
prop.setProperty("vmapPol.coverageType","Bnd");
prop.setProperty("vmapPol.featureTypes","edge
area");
prop.setProperty("vmapPol.text","");
prop.setProperty("vmapPol.edge","Polbndl
Coastl");
prop.setProperty("vmapPol.area","Polbnda");

VPFLayer vpfl = new VPFLayer();
vpfl.setProperties("vmapPol",prop);
OMGraphicList gl = vpfl.getRectangle();
Iterator it = gl.iterator();
while (it.hasNext())
{
Object oo = it.next();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}

/****************************************************/

when I invoke the
vpfl.getRectangle();

the program throw an exception:

java.lang.NullPointerException at
com.bbn.openmap.layer.vpf.VPFLayer.getRectangle(Unknown
Source) at
com.marconi.provavpf.TryReadVPF.<init>(TryReadVPF.java:40)
at
com.marconi.provavpf.TryReadVPF.main(TryReadVPF.java:62)

I readed in the FAQ that I have to modify the
openmap.properties ad add

openmap.layers=...vmapPol

IS it mandatory and in this case where do I have to
read the openmap.properties without starting openmap?

Thank you
Stefano Madeddu

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