Hello Weiwei,
I understand from your query that you need assistance with programmatically specifying axes larger than the picture.
To achieve axes larger than the image, you need to add a callback:
- Retrieve the height and width of the image using “imfinfo”.
- Set the height and width of “UIAxes” to the image's height and width.
- Set the “InitialMagnification” to 'fit' as a Name-Value pair in “imshow”.
- Then, set the x and y limits of “UIAxes” using “XLim” and “YLim” to some larger values. Please refer to the code snippet below, which is attached to a submit button:
cImage = imread("imgonline-com-ua-ReplaceColor-jG6Xmfl8o3AoC3.png"); %example image
InfoImage = imfinfo("imgonline-com-ua-ReplaceColor-jG6Xmfl8o3AoC3.png") %Retreiving the property of the example image
hImage = imshow(cImage,'Parent',app.UIAxes, 'InitialMagnification', 'fit') %Set the image to fit in UIAxes
app.UIAxes.Position = [10 10 InfoImage.Width InfoImage.Height] %Set the height and width of Axes equal to that of image
app.UIAxes.YLim = [ -1000 1000] %Increasing the Y limit of Axes
app.UIAxes.Visible = 'on'
Here is the obtained output using an example image:
For further information on “UIAxes”, kindly refer to the following documentation:
Hope this helps,
Regards,
Neelanshu
