作者Piin (过去 现在与未来)
看板Geography
标题Re: [问题] 如何将raster数值撷取到点图层上
时间Sat Oct 22 20:57:04 2005
※ 引述《biotite (山水寄情)》之铭言：
: 标题: [问题] 如何将raster数值撷取到点图层上
: 时间: Fri Oct 21 10:48:20 2005
: 推 biotite:I'd like to have an vector output, not raster. Thanks 10/21 23:52
我以前的作法是先建立一个空白的point shp file, 把要拿出来的地方设定好(add point)
并建立一个field and fill the number by "1", then convert to grd.
如此我就有一个用来剪东西的遮照, 接着把你要的grd与mask相乘, 就可以得到你所须要
grd file. that is not the shp file.
This method works very well on the 3.X and I think it could still use on the
8.X or 9.X
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