In connection with some projecting problems in the recent development of mountain areas, this paper pointed out some essential methods that should be paid attention to from the geographicpoint o...
本文从地理角度,针对当前山区开发中的一些突出问题,提出了山区开发应注意的基本方法和途径。
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Whether derived from address information, acquired by GPS devices, or otherwise generated, many databases contain geographic coordinates of point locations as separate numeric columns in a table.
While geographic coordinates can be used to represent point locations anywhere, they are not suitable for defining lines of appreciable length or computing distances.