Mathematica > Data Manipulation > Signal Processing > Downsample
BUILT-IN MATHEMATICA SYMBOL

Downsample

Downsample[array, n]
returns a downsampled version of the array by sampling every n^(th) element.

Downsample[array, n, offset]
starts sampling from the element at position offset.

DetailsDetails

  • In Downsample[array, n, offset], the offset has to be a number between and n.
  • In Downsample[array, ...], array can be an array of any rank.
  • Downsample[array, {n1, n2, ...}] samples every ^(th) element in the i^(th) dimension.
  • Downsample[array, n] is equivalent to Downsample[array, n, 1].

ExamplesExamplesopen allclose all

Basic Examples (4)Basic Examples (4)

Downsample a list by a factor of 3:

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Use an offset:

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Downsample a 2D array:

In[1]:=
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Out[1]//MatrixForm=

Use a different downsampling factor in each dimension:

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Out[1]//MatrixForm=

Downsample a symbolic array:

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