finding minimum of coordinates points

Question

We assumed to have 10 coordinate points. which index is minimum?

(1.80010698 , 4.014570409) (9.748210988 , 2.411989898) (13.42264438 , 868.0535382) (11.24015951 , 3.870002979) (1.689561544 , 2.297184285) (1.887080244 , 2.019336807) (9.932550154 , 1.457111369) (9.184472568 , 2.521589242) (5.061231021 , 2.800199182) (3.343124515 , 2.478806307)

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I want to plot only the marked points. The rest of them do not matter.

  clc;
  close all;

  load('MyMatFileName.mat');

  [m, ~] = size(inputs);
  x = inputs(inputs(:,end-1) < 5 & inputs(:,end) < 2, end-1);
  y = inputs(inputs(:,end-1) < 5 & inputs(:,end) < 2, end);
  plot(x, y, 'or', 'linewidth', 1.5);
  grid on

attached file

之外才匹配短语

Answer 1

我猜你在谈论距离x，y坐标的距离。

您可以使用毕达哥拉斯定理计算与原点的距离。

示例代码：

for i = 1:length(coordinates)
  L(i) = (x(i)^2 + y(i)^2)^0.5;
end

[I,minL] = min(L);

其中I是最小索引，minL是最小距离。