java 版wcontour-1.6.1 等值线自相交的问题

ffye1981

王老师：
你好，我用你写的java 版本的wcontour-1.6.1.jar版本的api
1、tracingBorders
2、tracingContourLines
3、smoothLines
4、tracingPolygons
生成等值面的时候，发生了自相交的情况:


[size=15.0667px]SELECT
[size=15.0667px]VALUE
[size=15.0667px]        ,
[size=15.0667px]        st_intersection ( G.shape, x.shape ) AS shape
[size=15.0667px]FROM
[size=15.0667px]        "***********" G,
[size=15.0667px]        "XZQH" x
[size=15.0667px]WHERE
[size=15.0667px]        to_char( G."refTime", 'YYYY-MM-DD HH24:MI:SS' ) || '_' || G."surfaceValue" = '2019-09-25 18:00:00_10000'
[size=15.0667px]> ERROR:  lwgeom_intersection: GEOS Error: TopologyException: Input geom 0 is invalid: Self-intersection at or near point 98.861732636590531 18.12727345592743 at 98.861732636590531 18.12727345592743

[size=15.0667px]> 时间: 0.512s

MeteoInfo

可以把 smoothLines 步骤注释掉试试

ffye1981

好的，我试试。

ffye1981

另外发现类public class Polygon {
    public boolean IsBorder;
    public boolean IsInnerBorder = false;
    public double LowValue;
    public double HighValue;
    public boolean IsClockWise;
    public int StartPointIdx;
    public boolean IsHighCenter;
    public Extent Extent = new Extent();
    public double Area;
    public PolyLine OutLine = new PolyLine();
    public List<PolyLine> HoleLines = new ArrayList();
    public int HoleIndex;

    public Polygon() {
    }

    面对象包含的内嵌框集合HoleLines有些是不闭合的（首尾坐标不一致）？这样在构造一个几何对象时会报错，要手工处理一下吗？

MeteoInfo

ffye1981 发表于 2019-9-25 09:15
另外发现类public class Polygon {
    public boolean IsBorder;
    public boolean IsInnerBorder = f ...

软件是开源的，你可以自己改进相关功能。

ffye1981

好的，谢谢