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Summary, Tips, and Tricks on Arrays

Module by: National Instruments

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  • Arrays group data elements of the same type. You can build arrays of numeric, Boolean, path, string, waveform, and cluster data types.
  • The array index is zero-based, which means it is in the range 00 to n−1 n 1 , where nn is the number of elements in the array.
  • You must insert an object in the array shell before you use the array on the block diagram. Otherwise, the array terminal appears black with an empty bracket.
  • To create an array control or indicator, select an array on the Controls>>Array & Cluster palette, place it on the front panel, and drag a control or indicator into the array shell.
  • If you wire an array to a For Loop or While Loop input tunnel, you can read and process every element in that array by enabling auto-indexing.
  • Use the Array functions located on the Functions>>All Functions>>Array palette to create and manipulate arrays.
  • By default, LabVIEW enables auto-indexing in For Loops and disables auto-indexing in While Loops.
  • Polymorphism is the ability of a function to adjust to input data of different data structures.

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