image upside down (including axis labels etc) using App designer: same code OK outside GUI

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Stuart MacGregor 2023-2-23

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https://ww2.mathworks.cn/matlabcentral/answers/1917910-image-upside-down-including-axis-labels-etc-using-app-designer-same-code-ok-outside-gui

评论： Stuart MacGregor 2023-2-24

Using image(app.UIAxes,C) in draw() callback. ComponentBrowser/Axes/Rulers/YDir setting makes no difference. Changing YDir after image() line changes the displayed image, but leaves the axes upside down. No idea what [x,y]=ginput(1) is giving back - not what I wanted anyway.

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Walter Roberson 2023-2-23

I wonder if somehow you have two axes in the same place?

DId you possibly use yyaxis ? Or did you possibly create an axes as part of the app design, but also call axes() inside your code, and so doing create a second axes?

Stuart MacGregor 2023-2-23

移动：Voss 2023-2-23

No, just called : app.data.classname.function(app.UIAxes) in the draw() callback, and the class method calls image(ax,C), where ax is the passed axes object.

The text of the axes ruler numbers is drawn upside down! I could not do that if I tried.

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