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wisdomwb opened this issue Dec 3, 2018 · 4 comments
Open

The area measure tool calculates error? #1

wisdomwb opened this issue Dec 3, 2018 · 4 comments
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@wisdomwb
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wisdomwb commented Dec 3, 2018

I find that the area measure may calculate error sometimes. Like this:

_20181203112340

@wisdomwb wisdomwb changed the title The area measure tool calculate error? The area measure tool calculates error? Dec 3, 2018
@wisdomwb
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wisdomwb commented Dec 3, 2018

我又确认了一下。发现,当测量的面积较大时,这时得到的单位是平方公里,结果正确。但是,当测量较小的面积时,得到的结果单位是平方米,结果是错误的,大概比正确结果小100倍。

@bingqixuan
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我又确认了一下。发现,当测量的面积较大时,这时得到的单位是平方公里,结果正确。但是,当测量较小的面积时,得到的结果单位是平方米,结果是错误的,大概比正确结果小100倍。

好的,我会看一下,不过由于这一个月手头上都比较忙,现在没时间维护,所以统一到元旦之后再解决这些问题,并开源更多细节。

@bingqixuan bingqixuan added the bug label Dec 3, 2018
@wisdomwb
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wisdomwb commented Dec 4, 2018

好的。
问题应该是贴地形的长度计算时额外加了海拔的原因。如下截图所示:

_20181204155103
上图中的海拔大概是400米。贴地形量直线距离一开始就是400米。可以参考下。

@wisdomwb
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期待作者解决这个问题,或者开源细节。谢谢。

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