Resizes a sequence to the next higher valid power of 2, sets the new trailing elements of the sequence to zero, and leaves the first n elements unchanged, where n is the number of samples in the input sequence.
If input array is empty, zero padded array is also empty.
This input can be an array of double-precision floating-point numbers or an array of complex double-precision floating-point numbers.
A Boolean that specifies when to zero pad the input sequence.
|True||Zero pads input array only if the array size is not a valid power of 2. For example, if input array contains 500 elements, the size of the zero padded output sequence is 512.|
|False||Resizes input array to the next valid power of 2 even if the array size already is a valid power of 2. For example, if input array contains 1,024 elements, the size of the zero padded output sequence is 2,048.|
Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.
Default: No error
The input sequence padded up to the next power of 2 elements.
Error information. The node produces this output according to standard error behavior.
Zero padding is useful when the size of the acquired data buffers is not a power of 2, and you want to take advantage of fast processing algorithms in the Analysis nodes. These algorithms include Fourier transforms, Power Spectrum, and fast Hartley transforms, which are efficient for buffer sizes that are a power of 2.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported