How can I make the figure created by the plot function be an object?

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Ezz El-din Abdullah 2017-1-31

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评论： Adam 2017-1-31

I would like to get a variable out of the plot function so that I can use it for the rest of the code. In other words, I need what's in the figure to be an object I can edit. For example, I have drawn some pixels as points on an image using plot().

The question is how can I fit these points to get the desired curve without making these points as one object on a separate figure?

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Answer 1

Adam 2017-1-31

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https://ww2.mathworks.cn/matlabcentral/answers/322719-how-can-i-make-the-figure-created-by-the-plot-function-be-an-object#answer_252762

在 MATLAB Online 中打开

h = plot( ... )

will return a handle to the object that is plotted, although the data in this will be the same as you gave it in the first place in terms of curve fitting.

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Ezz El-din Abdullah 2017-1-31

Thanks! But I have another problem. When I plot this object on a different figure. The curve looks spread and not confined as I plotted it on the image. So what should I do?