relative error of 2 matrix

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amjad almaarafawi
amjad almaarafawi 2019-12-14
评论： amjad almaarafawi 2019-12-14
A= matrix 20x2
V_interpolation = matrix 20x1
V_exper = -A(:,2);
r_exper = A(:,1);
Absuolut_Error = -abs(V_interpolation - V_exper);
Relative_Error = -abs(Absuolut_Error/(V_exper))
Im trying to ge the relative error for this data but I always get 20x20 matrix and not the right values. what am I doing wrog? thanks for your help in advance.
  2 个评论
dpb
dpb 2019-12-14
Relative_Error = -abs(Absuolut_Error/(V_exper))
"/" is matrix divide operator, not element-wise.
See
doc rdivide
for array division. The "dot" operators are universal for element-wise operations; the "plain" operators are matrix algebra versions.
amjad almaarafawi
amjad almaarafawi 2019-12-14
Thank you, thats work perfect.

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