MATLAB: What’s the unit of the normalized frequency in Matlab.

fdatoolfilter

I have used fdatool to design a filter and i used the normalized frequency. I know that it should be in the interval [0,1] but i don't know what's the unit of this frequency? Can anyone tell me please?

Best Answer

It is normalized, and therefore it doesn't have a unit. Think of it like a percentage or a probability distribution.

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MATLAB: Normalize to unit norm

If you want to normalize a vector to have unit L2 norm.

   x = randn(100,1);
   x = x./norm(x,2);
   norm(x,2)

MATLAB: Axes units normalized position

The command axes creates an axes object (see: doc axes). It is created with 'normalized' units, such that the position [0,0,1,1] fills the complete window: Start at point 0,0 in the left bottom and use the full width and height.

Then uistack move this axes object below all other axes, such that it is in the background and does not cover other axes. See: doc uistack .

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MATLAB: Normalize to unit norm

MATLAB: Axes units normalized position

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