Hi Martin:
I am not sure we have much to say on this one; the JTS library is
pretty solid (and has its own user list). Try stepping through the
code using a debugger and see what is going on ...
The line number you are failing on makes no sense to me:
public static String stringOfChar(char ch, int count) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < count; i++) {
buf.append(ch);
}
return buf.toString(); <--- you are failing here (this is line 125)
}
On Fri, May 15, 2009 at 11:07 PM, Martin Tomko <[email protected]> wrote:
> Dear all,
> I seem to have problems to build a JTS geometry using Geotools
> 2.5.-snapshot.
> I have an array of coordinates (printout below) that I extracted from a
> GML polygon exterior ring position list.Running the code below I am
> getting an invalid geometry. I tried to print out the geometry toText,
> and am getting the followng error from the toText method:
> java.lang.NullPointerException
> at
> com.vividsolutions.jts.io.WKTWriter.createFormatter(WKTWriter.java:125)
> at
> com.vividsolutions.jts.io.WKTWriter.writeFormatted(WKTWriter.java:290)
> at com.vividsolutions.jts.io.WKTWriter.write(WKTWriter.java:226)
> at com.vividsolutions.jts.geom.Geometry.toText(Geometry.java:961)
>
> Same thing happens on the linearring, which meant that the construction
> of the LinearRing is somehow incorrect. What could be the problem?
> Thanks
> Martin
>
>
> GeometryFactory gf = new GeometryFactory(null,3035);
> ArrayList<String> splitPos = splitString(poslist," ",2,",");
> Coordinate[] coords = toCoordArray(splitPos, ",");
> LinearRing shell = gf.createLinearRing(coords);
> Polygon p = gf.createPolygon(shell, null);
> p.setSRID(3035);
> System.out.println("new pol: "+p.toText());
>
> (4100527.55, 2546443.706, NaN)
> (4101669.813, 2551297.031, NaN)
> (4102440.967, 2551063.104, NaN)
> (4103305.401, 2550601.054, NaN)
> (4104063.084, 2549979.24, NaN)
> (4104684.898, 2549221.557, NaN)
> (4105146.948, 2548357.123, NaN)
> (4105380.875, 2547585.969, NaN)
> (4100527.55, 2546443.706, NaN)
>
> --
> Martin Tomko
> Postdoctoral Research Assistant
>
> Geographic Information Systems Division
> Department of Geography
> University of Zurich - Irchel
> Winterthurerstr. 190
> CH-8057 Zurich, Switzerland
>
> email: [email protected]
> site: http://www.geo.uzh.ch/~mtomko
> mob: +41-788 629 558
> tel: +41-44-6355256
> fax: +41-44-6356848
>
>
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