Plot contour map of the residual surface

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Sharif
Sharif 2014-9-28
评论： Image Analyst 2014-9-28
Hello everyone! So I'm trying to 1)plot the contour map of the residual and energy surface, 2)3D plot the residual and energy surface given only a 2X2 A Matrix and 2x1 b Matrix. For example A= [1 2;1 0] b=[1;1]
Could anybody help me out? I'm not sure how to start this. Thanks in advance!
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Image Analyst
Image Analyst 2014-9-28
Which (A or b) is the residual and which is the energy surface? It doesn't make much sense to plot a surface when you have only two (x,y) coordinates, like you have for A. A surface must have at least 3 points to form a plane. I think of residuals as the difference between your fitted data values and the actual (noisy) data values. What is your definition?

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