在matlab中把经纬度数据转化为googleearth可识别的kml文件。可在googleearth中显示航次站点数据等，另增了一个可以画三角网格的函数ge_trisurf.m(In MATLAB, the longitude and latitude data are transformed into googleearth recognizable KML files. The data of voyage sites can be displayed in googleearth.Add