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Chapter 14
Arrays, Clusters, and Graphs
14-10
© National Instruments Corporation
Build Array function (Functions»Array)—You can use it to create an 
array from scalar values or from other arrays. Initially, the Build Array 
function appears with one scalar input.
You can add as many inputs as you need to the Build Array function, and 
each input can be either a scalar or an array. To add more inputs, pop up on 
the left side of the function and select Add Element Input or Add Array 
Input
. You also can enlarge the Build Array node with the Resizing cursor 
(place the Positioning tool at the corner of an object to transform it into the 
Resizing cursor). You can remove inputs by shrinking the node with the 
Resizing cursor, or by selecting Remove Input.
The following illustration shows two ways to create and initialize arrays 
with values from block diagram constants. On the left, five string constants 
are built into a 1D array of strings. On the right, three groups of numeric 
constants are built into three, 1D numeric arrays. Then, the three arrays are 
combined into a 2D numeric array. The result is a 3 x 3 array with the rows 
3, 4, 7; –1, 6, 2; and 5, –2, 8.
You also can create an array by combining other arrays along with scalar 
elements. For example, suppose you have two arrays and three scalar 
elements that you want to combine into a new array with the order array 1, 
scalar 1, scalar 2, array 2, and scalar 3.
Initialize Array
Use this function to create an array whose elements all have the same value. 
In the following illustration, this function creates a 1D array.
The element input determines the data type and the value of each element. 
The dimension size input determines the length of the array. For example, 
Array of
Strings
2D Array 
of Numbers