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Thread Subject:
@$%#^%*$&#^$&%!!!!!

Subject: @$%#^%*$&#^$&%!!!!!

From: Petr Krysl

Date: 22 Jun, 2012 01:08:07

Message: 1 of 3

K>> d

d =

  -0.0581
  -0.0031
   0.0245
   0.0245
  -0.0031 + 0.0000i
  -0.0031 - 0.0000i
   0.0214
   0.0214
   0.0214
  -0.1132
  -0.1132
  -0.1132
  -0.1132
  -0.1132
   0.0520
   0.0520
   0.0520
   0.0520
   0.0520
   0.0520
   0.0520
   0.0520
   0.0520
   0.0520

K>> max(d,[],1)

ans =

   -0.1132

K>>

Subject: @$%#^%*$&#^$&%!!!!!

From: Petr Krysl

Date: 22 Jun, 2012 01:21:07

Message: 2 of 3

ha ha, the complex numbers make it interesting

"Petr Krysl" wrote in message <js0ghn$mfs$1@newscl01ah.mathworks.com>...
> K>> d
>
> d =
>
> -0.0581
> -0.0031
> 0.0245
> 0.0245
> -0.0031 + 0.0000i
> -0.0031 - 0.0000i
> 0.0214
> 0.0214
> 0.0214
> -0.1132
> -0.1132
> -0.1132
> -0.1132
> -0.1132
> 0.0520
> 0.0520
> 0.0520
> 0.0520
> 0.0520
> 0.0520
> 0.0520
> 0.0520
> 0.0520
> 0.0520
>
> K>> max(d,[],1)
>
> ans =
>
> -0.1132
>
> K>>

Subject: @$%#^%*$&#^$&%!!!!!

From: Steven_Lord

Date: 22 Jun, 2012 13:22:29

Message: 3 of 3



"Petr Krysl" <pkryslNOSP@Mucsd.edu> wrote in message
news:js0ghn$mfs$1@newscl01ah.mathworks.com...
> K>> d
>
> d =
>
> -0.0581 -0.0031 0.0245 0.0245 -0.0031
> + 0.0000i

http://www.mathworks.com/help/techdoc/ref/max.html

"For complex input A, max returns the complex number with the largest
complex modulus (magnitude), computed with max(abs(A)). Then computes the
largest phase angle with max(angle(x)), if necessary."

Since at least one element of d is complex, d is a complex input and the
magnitude of -0.1132 is greater than the magnitude of any of the other
elements in the array.

If you want to ignore the imaginary part when computing the maximum, use:

maxValue = max(real(d), [], 1)

*snip the remainder of d*

--
Steve Lord
slord@mathworks.com
To contact Technical Support use the Contact Us link on
http://www.mathworks.com

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