清空筛选条件
清空筛选条件

Creating a vector from a set of coordinates

19 次查看（过去 30 天）
Joe Cousins
Joe Cousins 2021-8-20
评论： Fangjun Jiang 2022-3-28
If I have a set of coordinates of:
x = [10.1, 5.4, 7.3, ...];
y = [2.3, 7.4, 8.8, ...];
How can I create a single vector that assigns each point to an integer such that index = [1 2 3 ...]. E.g. the point with index 1 has the coordinates of x(1), y(1)
Appreciate any help.

请先登录，再回答此问题。

采纳的回答

Bjorn Gustavsson
Bjorn Gustavsson 2021-8-20
If you do:
r = [x(:),y(:)]; % (:) forms column-vectors of any-dimensional array.
Then you will find:
p1 = r(1,:)
HTH
  2 个评论
Sean Ivan Roxas
Sean Ivan Roxas 2022-3-28
If I have N number of x and y coordinates, how do I index each pair of coorditnates from 1 to N and store these indices in a vector?
Fangjun Jiang
Fangjun Jiang 2022-3-28
There is no need to "store the indices". length(x), numel(x) or size(x) could return the size information if that is what you want.

请先登录，再进行评论。

更多回答（1 个）

Fangjun Jiang
Fangjun Jiang 2021-8-20
You mean like this? There is really no need to do this. Please explain the need.
x = [10.1, 5.4, 7.3];
y = [2.3, 7.4, 8.8];
index=[x;y]';
index(1,:)
ans =
10.1000 2.3000

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by