How to changes X Y coordinate System and get value point?

9 次查看（过去 30 天）
galaxy
galaxy 2022-12-9
编辑： galaxy 2022-12-18
Hi all,
Following is described of my question.
Suppose that, I have XY coordinate and 2 points (a,b)
Now, I create new XY coordinate with a is original point.
C is one point of x'ay' coordinate.
So, How to convert C position to xy coordinate??
or in opposite, if C is one point of xy coordinate, how to get position of C in x'y' coordinate??
Do anyone have idea, please help me.
Thank you so much.

请先登录，再回答此问题。

采纳的回答

Jiri Hajek
Jiri Hajek 2022-12-9
Hi, you need to use matrix transformations of coordinates as described e.g. here: https://en.wikipedia.org/wiki/Kinematics#Matrix_representation
  3 个评论
显示 1更早的评论
Jiri Hajek
Jiri Hajek 2022-12-12
OK. I'll try to explain the basic concept. In order to generalize transformation of coordinates for your point in a plane, you will always need at most two elementary transformations. One of them is rotation and the other is translation.
In your illustrations, you have the original and final coordinate systems, but to fully understand the complete transformation between your two coordinate systems, you will need to plot also a third coordinate system, which incorporates just one of the transformation steps (doesn't matter if rotation or translation).
To actually transform your coordinates, you have to perform one transform after the other. Offset (translation) is simple, but for the rotation, you need a matrix transform, see e.g. here.
galaxy
galaxy 2022-12-18
编辑：galaxy 2022-12-18
@Jiri Hajek
Sorry for feedback late
I got it.
Thank you for your anwser.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Antennas, Microphones, and Sonar Transducers 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by