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Wavelab Toolbox >> Wavelab Toolbox > Tools for Fast Matrix Multiplication in Wavelet Basis > StretchMatrix

StretchMatrix

Stretch matrix into BCR nonstandard form

Calling Sequence

[i,j] = StretchMatrix(ie,je,n,L)

Parameters

Inputs:

ie,je:

row/col indices of nonxero elements of matrix

n :

size of matrix

L :

number of resolution levels

Outputs:

i,j :

row/col indices of elements in nonstandard form of matrix

Examples

[ie,je,s] = find(StdForm)
[i,j]     = StretchMatrix(ie,je,n,L)
NonStd    = sparse([i,j],s,[2*n,2*n])

Authors

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