absolute value of a vector
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how can i determine the absolute value of a vector?
so for example
if i had x=[ -0.5 .3 .5 -0.5]
how would i determine the absolute value of each individual term in the vector?
i've tried using "abs" but it spits back one value.
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Accepted Answer
Roger Stafford
on 12 Feb 2014
That isn't true of matlab's 'abs' function. For every value in x it will return its absolute value. For every individual complex number it will return the square root of the sum of the squares of its real and imaginary parts.
I suspect you have a false 'abs' function somewhere on your system that is being called instead of the true 'abs'. You had better check on that.
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Roger Stafford
on 12 Feb 2014
I'll expand Matt's answer. You have used matrix division in yexact-y)/yexact and for this case the result would be a single 1 x 1 value, not a vector.
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