National Instruments BridgeVIEW 用户手册
Chapter 14
Arrays, Clusters, and Graphs
© National Instruments Corporation
14-9
Using Auto-Indexing to Set the For Loop Count
Notice that the count terminal is left unwired. When you use auto-indexing
on an array entering a For Loop, the loop executes according to the size of
the array, eliminating the need to wire a value to the count terminal. If you
use auto-indexing for more than one array, or if you set the count in
addition to auto-indexing an array, the actual number of iterations is the
smallest number possible.
on an array entering a For Loop, the loop executes according to the size of
the array, eliminating the need to wire a value to the count terminal. If you
use auto-indexing for more than one array, or if you set the count in
addition to auto-indexing an array, the actual number of iterations is the
smallest number possible.
3.
Run the VI. Of the eight input values, you will see four in the Positive
Array and four in the Negative Array.
Array and four in the Negative Array.
4.
From the block diagram, wire a constant of 5 to the count terminal of
the For Loop. Run the VI. You will see three values in the Positive
Array and two in the Negative Array, even though the input array still
has eight elements. This demonstrates that if N is set and you are
auto-indexing, the smaller number is used for the actual number of
iterations of the loop.
the For Loop. Run the VI. You will see three values in the Positive
Array and two in the Negative Array, even though the input array still
has eight elements. This demonstrates that if N is set and you are
auto-indexing, the smaller number is used for the actual number of
iterations of the loop.
5.
Close the VI and do not save changes.
End of Activity 14-2.
Using Array Functions
G has many functions to manipulate arrays located in Functions»Array.
These functions include Replace Array Element, Search 1D Array,
Sort 1D Array, Reverse 1D Array, and Multiply Array Elements.
For more information about arrays and the array functions available,
refer to Chapter 14, Array and Cluster Controls and Indicators, in the
G Programming Reference Manual or Online Reference»Function and
VI Reference.
These functions include Replace Array Element, Search 1D Array,
Sort 1D Array, Reverse 1D Array, and Multiply Array Elements.
For more information about arrays and the array functions available,
refer to Chapter 14, Array and Cluster Controls and Indicators, in the
G Programming Reference Manual or Online Reference»Function and
VI Reference.
Build Array