I am trying to plot locations of some building as simple points,
the code is:
public void loadAssetData()
{
try
{
AttributeType[] types = new AttributeType[1];
types[0] = AttributeTypeFactory.newAttributeType("asset", Point.class);
FeatureType pointType = FeatureTypeFactory.newFeatureType(types,
"pointfeature");
GeometryFactory geomFac = new GeometryFactory();
Point point;
Feature feature;
FeatureCollection fc = FeatureCollections.newCollection();
BufferedReader bf = new BufferedReader(new
FileReader("data/chc_data2.csv"));
float x, y;
String s;
String[] s1 = new String[2];
while ((s = bf.readLine()) != null)
{
s1 = s.split("\\s");
x = Float.parseFloat(s1[0]);
y = Float.parseFloat(s1[1]);
System.out.println(x + "," + y);
point = geomFac.createPoint(new Coordinate(x,y));
feature = pointType.create(new Object[] { point });
fc.add(feature);
}
StyleBuilder sb = new StyleBuilder();
Style style = sb.createStyle(sb.createPointSymbolizer());
DefaultMapLayer layer = new DefaultMapLayer(fc, style);
context.addLayer(layer);
} catch (Exception e) {
e.printStackTrace();
}
}
where context is the MapContext previously defined for a specific CRS
and to which I also add data from a couple of georeferenced images and
from a shapefile.
It fails with the following error at each point:
Nov 15, 2006 4:48:30 PM StreamingRenderer processStylers
SEVERE: null
java.lang.NullPointerException
at
org.geotools.renderer.lite.Decimator.decimateTransformGeneralize(Decimat
or.java:209)
at
org.geotools.renderer.lite.Decimator.decimateTransformGeneralize(Decimat
or.java:115)
at org.geotools.renderer.lite.LiteShape2.<init>(LiteShape2.java:132)
at
StreamingRenderer.getTransformedShape(StreamingRenderer.java:1675)
at StreamingRenderer.processSymbolizers(StreamingRenderer.java:1638)
at StreamingRenderer.process(StreamingRenderer.java:1533)
at StreamingRenderer.processStylers(StreamingRenderer.java:1475)
at StreamingRenderer.paint(StreamingRenderer.java:544)
at StreamingRenderer.paint(StreamingRenderer.java:406)
at org.geotools.gui.swing.JMapPane.paintComponent(JMapPane.java:414)
Any ideas what could be wrong?
Thanx
gaby
--
***************************************************************
** Gabriella Turek [EMAIL PROTECTED] **
** National Institute of Water & Atmospheric Research (NIWA) **
** PO Box 8602 Christchurch New Zealand +64-3-348-8987x3724 **
***************************************************************
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