用CLIP方法，报错。有谁知道什么情况？？？？

luboxy

部分代码如下：
Extent aExtent = _stationData.dataExtent;
                                aExtent.minX = 73;
                                        aExtent.maxX = 135;
                                        aExtent.minY = 19;
                                        aExtent.maxY = 56;

                                        InterpolationSetting gridInterp = new InterpolationSetting();
                                        GridDataSetting gridSetting=gridInterp.getGridDataSetting();
                                        gridSetting.xNum = 110;//插值的格点数，110*120
                                        gridSetting.yNum = 110;
                                        gridSetting.dataExtent = aExtent;

VectorLayer layer = DrawMeteoData.createShadedLayer(gridData, aLS, "Shaded_A","A", true);
                                layer.setMaskout(true);
                            VectorLayer ty= layer.clip((VectorLayer) chinaLayer);

把标红的部分注释掉，就可以，取消注释就报错，。报错信息如下。发现数据中有NaN，Extent 该如何设置呢？

报错信息如下：
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
org.meteoinfo.jts.geom.TopologyException: found non-noded intersection between LINESTRING ( 97.46245194123723 51.58440484753145, 97.45870591784208 51.58884476216672 ) and LINESTRING ( 97.45871559633028 51.587155963302756, 98.02752293577981 51.587155963302756 ) [ (97.46013078308698, 51.587155963302756, NaN) ]
        at org.meteoinfo.jts.noding.FastNodingValidator.checkValid(FastNodingValidator.java:145)
        at org.meteoinfo.jts.geomgraph.EdgeNodingValidator.checkValid(EdgeNodingValidator.java:94)
        at org.meteoinfo.jts.geomgraph.EdgeNodingValidator.checkValid(EdgeNodingValidator.java:59)
        at org.meteoinfo.jts.operation.overlay.OverlayOp.computeOverlay(OverlayOp.java:237)
        at org.meteoinfo.jts.operation.overlay.OverlayOp.getResultGeometry(OverlayOp.java:189)
        at org.meteoinfo.jts.operation.overlay.OverlayOp.overlayOp(OverlayOp.java:92)
        at org.meteoinfo.jts.operation.overlay.snap.SnapIfNeededOverlayOp.getResultGeometry(SnapIfNeededOverlayOp.java:96)
        at org.meteoinfo.jts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(SnapIfNeededOverlayOp.java:58)
        at org.meteoinfo.jts.geom.Geometry.intersection(Geometry.java:1338)
        at org.meteoinfo.shape.Shape.intersection(Shape.java:271)
        at org.meteoinfo.layer.VectorLayer.clip(VectorLayer.java:1435)
        at org.meteoinfo.layer.VectorLayer.clip(VectorLayer.java:1413)
        at org.meteoinfo.layer.VectorLayer.clip(VectorLayer.java:1391)
        at org.qx.QxMain.testStations(QxMain.java:440)

良辰

可能是缩进的问题

luboxy

代码是对齐的呢，我的是java 的，缩进不影响的。