How to find tangent of a curve and find the distance from the centre?

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Rahul Seth 2021-7-5

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评论： Rahul Seth 2021-7-9

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I have plotted a curve from a jpg image using the ginput feature of matlab. It comes out to be a curve. I want to find the various radius of the curve at different points.I thought of finding the tangent at different point. But i dont know the curve equation, how to achieve this?

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Amit Bhowmick 2021-7-5

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If you have xdata ydata get the equation of the curve using cfit tools.

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Rahul Seth 2021-7-9

Okay. Let me try it out and get back to you. Thank You for your reply.

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