Hello Jiaji,
I understand that when you try to copy and paste an image, it may get disassembled. One possible reason for this is selecting the metafile format in the clipboard, which may lose information. It is recommended to choose the second option, which is preserve information.
Another workaround is to use the "saveas" function in MATLAB. This function allows you to save the image in a specific format, such as PNG or JPEG, ensuring that the image is preserved without any loss of information. By saving the image using the "saveas" function, you can then use it in other applications or insert it into documents without encountering the disassembly issue.
Here's an example of how to use the "saveas" function to save an image as a PNG file:
% Save the plot as a PNG image
saveas(gcf, '3D.png');
Then use this in Visio/AI.
Hope this helps you!