How to make the aspect ratio of the zoom-in window fixed?

9 次查看（过去 30 天）
Omar Alamoudi
Omar Alamoudi 2020-6-18
评论： Omar Alamoudi 2020-6-18
So I'm using AppDesigner to dipslay a sequence of 2D images. All of these images have the same dimensions. Within each image there are regions of interest that I would like to zoom-in to. After setting the axis sytle to image using the follow command
axis(app.UIAxes,'image');
Now, when I zoom-in, the shape of the pixels is preserved which is a desired behavior. In addition, I want is that the zoom-in window shown in blue in the image below to preserve the aspect ration of the image dimentions shown in red. Where when I expand the zoom-in window, it only grows or shrinks with the aspect ratio of the image.
How can I do that?

请先登录，再回答此问题。

回答（1 个）

Ameer Hamza
Ameer Hamza 2020-6-18
You can use daspect() to keep the aspect ratio of the image constant when zooming on a particular region. Also see my answer here: https://www.mathworks.com/matlabcentral/answers/550149-allow-zooming-to-resize-the-axes-and-maintain-axis-equal
  1 个评论
Omar Alamoudi
Omar Alamoudi 2020-6-18
Thank you Ameer for your fast reply.
The aspect ratio of the image is working as I want it to, but my concern is about the region within blue box in the image I attached. The blue box appears after pressing the left buttom of the mouse when choosing the axtoolbar zoomin icon.
What happens now is that the blue box shown above of the image above is a zoomed in version of the image with the correct aspect ratio cropped, but the dimensions of the entire image adjusts to the dimensions of the blue box. What I want is the correct aspect ration, but a zoomed in area that has dimentions identical to original axis.
I hope this helps in clarifying the question.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Interaction Control 的更多信息

标签

产品


版本

R2020a

Community Treasure Hunt

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

Start Hunting!

Translated by