帮朋友问个petrel问题

hehh2009

1.. 在petrel导出的CMG grid文件中头文件数据*grid *corner后边跟的三个数字是什么含义？
2. 下面这些文件是网格顶点坐标还是网格的中心坐标？
CORNERS
450518.221996 450732.398306 450732.398306 450946.574616 450946.574616 451160.750926
451160.750926 451374.927236 451374.927236 451589.103547 451589.103547 451803.279857
451803.279857 452017.456167 452017.456167 452231.632477 452231.632477 452445.808787
452445.808787 452659.985097 452659.985097 452874.161408 452874.161408 453088.337718
453088.337718 453302.514028 453302.514028 453516.690338 453516.690338 453730.866648
453730.866648 453945.042958 453945.042958 454159.219269 454159.219269 454373.395579
454373.395579 454587.571889 454587.571889 454801.748199 454801.748199 455015.924509
455015.924509 455230.100819 455230.100819 455444.277130 455444.277130 455658.453440
455658.453440 455872.629750 455872.629750 456086.806060 456086.806060 456300.982370
456300.982370 456515.158680 456704.245361 456914.993242 456972.061308 457148.384478
457148.384478 457310.118224 457310.118224 457468.565749 457468.565749 457627.558780
457627.558780 457805.223602 458071.217557 458189.021667 458189.021667 458323.253813
458323.253813 458471.289144 458471.289144 458626.622340 458626.622340 458790.15249