关于province-basemap.gs掩盖多边形外围区域出现白线现象

四叶草

river 发表于 2016-9-7 21:02
这么好的帖子，竟然没有早看到！

闲着没事研究后，发现竟然有这么一出“戏”。

午后阳光

感谢楼主分享经验，虽然不知道原理，但是按照你的讲解，解决了白线问题。还想请教一下，我自己生成了边界文件out.txt，以及修改了province-basemap.gs文件，但是我不知道怎么生成supportdata文件夹下的底图文件，也就是我还没有底图文件，运行时，居然也出图了，只是会提示map file format error，自己也想不通……

四叶草

午后阳光 发表于 2016-9-29 11:16
感谢楼主分享经验，虽然不知道原理，但是按照你的讲解，解决了白线问题。还想请教一下，我自己生成了边界文 ...

家园里的整个版supportdata文件夹下好像带有全国各省的底图文件呢。制作方式也简单，请参考该帖子http://bbs.06climate.com/forum.php?mod=viewthread&tid=2754

午后阳光

四叶草 发表于 2016-9-29 13:42
家园里的整个版supportdata文件夹下好像带有全国各省的底图文件呢。制作方式也简单，请参考该帖子http:// ...

谢谢，我再倒腾倒腾

药草

进来学习

xgm324

学习，感谢分析。

ㄣ韩2723邹ㄜ

楼主，我是安装气象家园整合版grads，你的方法已经理解，但是贵州省起始是NW方向（左上角），白线居然在右上角，并不是从左上角起始经纬度那个点划过来的，对于贵州省的白线无法解决，麻烦你帮忙调试一下呗。

四叶草

ㄣ韩2723邹ㄜ 发表于 2017-1-8 10:09
楼主，我是安装气象家园整合版grads，你的方法已经理解，但是贵州省起始是NW方向（左上角），白线居然在右 ...

你这个现象和我分享的应该同属一类。
从你给的图，我感觉你的边界数据起始点是在NE方向，最后五组数据对的起、终点是在SE方向。你是不是看错了？

ㄣ韩2723邹ㄜ

四叶草 发表于 2017-1-8 11:10
你这个现象和我分享的应该同属一类。
从你给的图，我感觉你的边界数据起始点是在NE方向，最后五组数据 ...

我仔细看了起点不在NE方向，无论怎样改变五个点顺序，这条线依然存在。附代码，目前白线应该在NW到左下角的位置，已经被隐藏了的。可是那条莫名白线很是头痛。。。。。。
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108.87413  25.55437 108.83434  25.55196 108.80496  25.52839 108.79847  25.54526 108.77810  25.55886 108.79283  25.57937 108.76596  25.59904 108.77991  25.63126 108.70099  25.61882 108.65971  25.57406 108.65946  25.55338 108.67902  25.52210 108.66225  25.51278 108.62894  25.51620 108.63405  25.48461 108.60677  25.47988 108.59467  25.46698 108.59274  25.43386 108.61652  25.40543 108.62218  25.35248 108.61956  25.33589 108.59554  25.32411 108.58012  25.34238 108.58086  25.36307 108.55621  25.37562 108.54762  25.40438 108.48679  25.45218 108.44564  25.45446 108.41127  25.44103 108.39203  25.48631 108.33655  25.52957 108.31615  25.53323 108.30132  25.51909 108.27697  25.48289 108.23898  25.46337 108.23621  25.42723 108.21428  25.43152 108.18844  25.45707 108.14579  25.44131 108.14757  25.43262 108.17336  25.42637 108.18230  25.40661 108.17700  25.39683 108.14017  25.39085 108.13238  25.38032 108.14786  25.36210 108.13167  25.34400 108.14781  25.32051 108.12934  25.29409 108.13909  25.27250 108.12950  25.23711 108.11784  25.22924 108.10519  25.20319 108.07345  25.18997 107.99783  25.19945 107.96515  25.18089 107.89970  25.16577 107.85789  25.12852 107.82928  25.12455 107.81023  25.13352 107.77296  25.12461 107.78535  25.15768 107.75582  25.19152 107.75867  25.22747 107.74907  25.24410 107.73793  25.24310 107.70263  25.19999 107.69051  25.20083 107.69015  25.22719 107.65781  25.26197 107.65427  25.29639 107.66566  25.31344 107.65106  25.31820 107.62796  25.31321 107.60510  25.27200 107.50246  25.21908 107.47083  25.21667 107.46262  25.22616 107.48418  25.28758 107.47201  25.30422 107.44476  25.29030 107.42834  25.29185 107.40359  25.35468 107.41978  25.39279 107.39806  25.39645 107.37602  25.41593 107.35361  25.40538 107.32964  25.41158 107.30655  25.42900 107.33614  25.46675 107.32745  25.50213 107.22827  25.55946 107.23148  25.59656 107.21617  25.61068 107.20146  25.61081 107.14145  25.57191 107.08923  25.57258 107.06248  25.55950 107.06940  25.51682 107.01141  25.49343 106.99773  25.46672 106.99353  25.45186 106.96664  25.44633 106.95914  25.42965 106.97935  25.37014 107.00957  25.35433 107.00258  25.31107 107.01062  25.27846 106.98775  25.26649 106.98423  25.24153 106.94161  25.25376 106.92034  25.25047 106.90070  25.22975 106.88718  25.18676 106.85436  25.19019 106.78552  25.17664 106.76184  25.18572 106.72429  25.16463 106.69663  25.18426 106.67841  25.18046 106.64319  25.16506 106.63366  25.13577 106.60094  25.11393 106.58996  25.09405 106.57280  25.09504 106.53058  25.08538 106.53077  25.07392 106.51352  25.05864 106.45615  25.04489 106.40856  25.01366 106.29994  24.98077 106.27550  24.98725 106.24217  24.97816 106.21999  24.98692 106.18915  24.95971 106.16344  24.96869 106.14440  24.95703 106.19875  24.87398 106.20020  24.84671 106.17964  24.78968 106.17078  24.76954 106.14204  24.75744 106.12915  24.73225 106.05131  24.69385 106.01803  24.64048 105.99239  24.65310 105.96096  24.68497 105.93581  24.72898 105.86936  24.73287 105.82985  24.70673 105.80569  24.70671 105.70518  24.76870 105.67822  24.77508 105.62583  24.78163 105.59605  24.81113 105.55878  24.80279 105.50536  24.81113 105.45982  24.87035 105.44555  24.91109 105.42401  24.93921 105.38490  24.94595 105.31613  24.92918 105.27350  24.93404 105.25463  24.97222 105.23722  24.97398 105.20630  25.00041 105.16307  24.97246 105.13662  24.96728 105.07211  24.91948 105.06494  24.89927 105.03687  24.87756 105.03088  24.79731 104.87364  24.74584 104.85122  24.68930 104.82398  24.67781 104.76112  24.66362 104.74054  24.63114 104.72424  24.62620 104.70074  24.63654 104.68794  24.65935 104.63781  24.66533 104.58266  24.71685 104.53387  24.73449 104.52715  24.75024 104.53925  24.77190 104.54091  24.82577 104.58768  24.88075 104.62302  24.89941 104.68339  24.98863 104.70083  25.01056 104.68995  25.03911 104.67413  25.05548 104.63301  25.05328 104.62337  25.05847 104.62397  25.07291 104.66260  25.07302 104.68259  25.09336 104.71785  25.15462 104.73883  25.17978 104.72820  25.20720 104.73997  25.21783 104.75211  25.21725 104.79452  25.16877 104.81144  25.16958 104.80872  25.21838 104.81802  25.25283 104.80525  25.26717 104.78201  25.26493 104.76643  25.28199 104.73772  25.26893 104.70203  25.29705 104.65016  25.29889 104.64120  25.35864 104.62994  25.37045 104.59566  25.38000 104.57237  25.40339 104.54093  25.40768 104.55497  25.53387 104.50441  25.52284 104.48842  25.50343 104.45203  25.49528 104.43600  25.48022 104.41933  25.49609 104.43365  25.52649 104.42409  25.58369 104.38416  25.59267 104.36524  25.58490 104.35313  25.60036 104.32489  25.60693 104.31781  25.62496 104.30798  25.65877 104.31966  25.75425 104.33257  25.75691 104.36053  25.73452 104.37718  25.74318 104.38348  25.78725 104.40659  25.80858 104.41088  25.85103 104.43499  25.87511 104.41578  25.90723 104.43791  25.94780 104.46604  26.02005 104.45288  26.07721 104.49311  26.07715 104.51299  26.09729 104.52007  26.12440 104.51553  26.16423 104.54726  26.22000 104.54477  26.26031 104.58593  26.29713 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103.60246  27.05276 102.00000  23.00000 102.00000  31.00000 111.00000  31.00000 111.00000  23.00000 102.00000  23.00000

四叶草

ㄣ韩2723邹ㄜ 发表于 2017-1-8 11:31
我仔细看了起点不在NE方向，无论怎样改变五个点顺序，这条线依然存在。附代码，目前白线应该在NW到左下角 ...

我知道你的“白线”出现的原因了，请看下面的图！

下图是用2个多边形组成的贵州省边界数据

下图是直接删除东侧小多边形的边界数据