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xcorr

xcorr(u,v)

Compute the cross-correlation of two vectors.

Examples

1. Compute the cross-correlation of two vectors:

   julia> u = [1, 2, 3, 4, 5];
   julia> v = [2, 4, 6];
   julia> xcorr(u, v)
   7-element Array{Int64,1}:
   2
   8
   20
   32
   29
   20
   12

   This example calculates the cross-correlation between vectors u and v.

2. Compute the cross-correlation of two time-series signals:

   julia> signal1 = [0.5, 0.7, 0.9, 1.2, 1.0];
   julia> signal2 = [1.1, 0.8, 0.6, 0.4];
   julia> xcorr(signal1, signal2)
   8-element Array{Float64,1}:
   0.55
   0.94
   1.5
   2.02
   2.45
   1.58
   0.9
   0.48

   In this example, the xcorr function is used to compute the cross-correlation between two time-series signals.

Common mistake example:

julia> u = [1, 2, 3];
julia> v = [4, 5, 6, 7];
julia> xcorr(u, v)
ERROR: DimensionMismatch("vectors must have the same length")

In this case, the vectors u and v have different lengths, which results in a DimensionMismatch error. Ensure that the input vectors have the same length to avoid this error when using xcorr.

See Also

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