App Designer UIAxes Mouse Click Registration

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Nando Käslin
Nando Käslin 2019-10-25
回答： Hope Q 2019-10-30
I want to display a .jpg image in the UIAxes of the App Designer and then be able to click on certain pixels and save the coordinates to select a region on the image.
I know that this feature was missing in early 2018 but I couldn't find anything else on the topic.
Can anyone tell me, if it's possible to do and how?
Thanks.

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采纳的回答

Sahithi Kanumarlapudi
You can use ‘getpts’ to get the coordinates of the selected points but it is not recommended.
In order to select a region from an image you can use on of the techniques present in “Region Of Interest”
The techniques can be found at the below link
https://www.mathworks.com/help/images/roi-creation-overview.html
For more information in getpts refer to
https://www.mathworks.com/help/images/ref/getpts.html
Hope this helps!

更多回答（1 个）

Hope Q
Hope Q 2019-10-30
App Designer supports Window button up, down and motion functions. See the "Window Functions" section here:
https://www.mathworks.com/help/matlab/ref/matlab.ui.figureappd-properties.html?searchHighlight=windowbuttondownfcn%20callback%20app%20designer&s_tid=doc_srchtitle
This post shows how to get the coordinates in the axes coordinate space
https://www.mathworks.com/matlabcentral/answers/458264-using-windowbuttondownfcn-in-app-designer

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