How to find the centroid of some points on map?

5 次查看（过去 30 天）

Aqua22 2015-5-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/220129-how-to-find-the-centroid-of-some-points-on-map

评论： Aqua22 2015-5-29

I have a set of points on map whose latitude and longitudes are known to me. Points form an L shape or cross shape to be particular. I want to know the lat-lon of the centroid of these points. How can I find that?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Image Analyst 2015-5-28

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/220129-how-to-find-the-centroid-of-some-points-on-map#answer_180791

Using your known latitutes and longitudes of your known set of points, you can get a spatial calibration - it's just a simple line formula if your map does not cover much curvature of the earth.

Then use ginput() to have the user select the points, and plug the x,y into your formulas to get the actual latitude and longitude. It's just simple algebra. Really.