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Given a 1024x918 matrix i drew a contour map and marked 8 points on it (top of the mountains). Using gradient descent I want to find shortest way down given the only matrix. How should I approximate the value of the gradient and what grid point should I pick?

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Emigsfd
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  • Where the contours are closest together marks the point where the gradient is steepest. It's not clear how you used the matrix to draw the contour map. – Adrian Keister Apr 26 '18 at 14:17
  • I used contour matlab function. But how do I find the closest point on the next contour? – Emigsfd Apr 27 '18 at 18:56

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