Retrieves approximation or detail undecimated wavelet transform (UWT) coefficients at a specific level. Use the WA Undecimated Wavelet Transform VI to compute the UWT of a signal. Wire data to the UWT coef input to determine the polymorphic instance to use or manually select the instance.


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Inputs/Outputs

  • cu16.png coef type —

    coef type specifies whether this VI returns approximation coefficients or detail coefficients. The default is Approximation coefficients.

  • c2ddbl.png UWT coef —

    UWT coef specifies the approximation coefficients and the detail coefficients from the multi-level undecimated wavelet transform (UWT). You must organize the coefficients into a 2D real array starting with the approximation coefficients of the largest level at the first row followed by the detail coefficients of all levels in descending order.

  • ci32.png coef level —

    coef level specifies the coefficient level this VI returns. The coef level must be between 1 and the largest level of the detail coefficients. The levels in the WA Undecimated Wavelet Transform VI specifies the largest level of the coefficients. The default is 1, which means this VI returns the coefficients at level 1.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • i2ddbl.png UWT coef out —

    UWT coef out returns UWT coef unchanged.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.

  • i1ddbl.png selected UWT coef —

    selected UWT coef returns the undecimated wavelet transform (UWT) coefficients at the coefficient level coef level of the coefficient type coef type.