Find closest values in an array of x and y coordinated compared to a given set of coordinates

Question

Christina 2015-6-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/223882-find-closest-values-in-an-array-of-x-and-y-coordinated-compared-to-a-given-set-of-coordinates

评论： dpb 2015-6-15

Hello all,

I've got two vectors of coordinates

x = linspace(400000,500000,100) and

y = linspace(100000,200000,100)

*********

I've got the given coordinates of a point

x_coord= 406000 and y_coord = 170000 and I'd like to find the position/index of the BOTH vectors x and y that are CLOSER to the given coordinate point.

********

I need an index that would fulfill BOTH the nearest values of x and y and at the end I'd get only one index, not two different indices for vectors x and y.

I know that if I had just one vector, I could use the commands:

[c_x index_x] = min(abs(x_coord-x));

[c_y index_y] = min(abs(y_coord-y));

But I don't need that now.

**********

Any thoughts on 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。

Answer 1

Christina 2015-6-15

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/223882-find-closest-values-in-an-array-of-x-and-y-coordinated-compared-to-a-given-set-of-coordinates#answer_182732

Actually I found the solution:

I created a table with the x and y coordinates:

The small code is:

*********

table[x y];

[d,p] = min((table(:,1)-x_coord).^2 + (table(:,2)-y_coord).^2);

**************

and p gives the index in 'table' matrix that meets the condition of getting the minimum distance between the point (x_coord,y_coord) and both x and y vectors