Is it possible to make a circle containing specific points?

13 次查看（过去 30 天）
Sierra
Sierra 2022-6-2
评论： Sierra 2022-6-4
I want to make a circle using 'percentile'.
for example, If the percentile is 100, the circle contains every points.
I know how to make a quadrangle using perenctile. but i have no idea making a circle using percentile.
Thanks.
  4 个评论
显示 2更早的评论
Jan
Jan 2022-6-2
@Sierra: Let me ask you again to provide some input data, such that the readers do not have to guess, how the dots are stored. Many of your questions are hard or impossible to answer, because you do not provide enough details and several questions for clarifications did not get any response from you.
This is not an efficient way to use the forum. Please read and consider this: https://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2022-6-2
Ran in:
You can use viscircles to draw a circle. Something like
numPoints = 200;
x = rand(1, numPoints) - 0.5;
y = rand(1, numPoints) - 0.5;
plot(x, y, 'b.', 'MarkerSize', 20);
grid on;
radii = sort(sqrt(x.^2 + y.^2), 'ascend');
% Find circle with 70% of the points
index = 70*length(radii)/100
index = 140
radius = radii(index)
radius = 0.4631
viscircles([0,0], radius, 'Color', 'r')
ans =
Group with properties: Children: [2×1 Line] Visible: on HitTest: on Show all properties
title('70% of points are within the red circle')
axis square

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Surface and Mesh Plots 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by