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Chapter 14

Arrays, Clusters, and Graphs

14-2

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Note

For more information on how to create array controls and indicators on the 
front panel, see Chapter 14, Array and Cluster Controls and Indicators, in 
the G Programming Reference Manual. 

There are several ways to create and initialize arrays on the block diagram. 
Some block diagram functions also produce arrays, as the following 
illustration shows.

Array Controls, Constants, and Indicators

You create array controls, constants, and indicators on the front panel or 
block diagram by combining an array shell with a numeric, Boolean, string, 
or cluster. An array element cannot be another array, chart, or graph. 
For examples of arrays, see 

G Examples\Examples\General\

arrays.llb

.

Auto-Indexing

For Loop and While Loop structures can index and accumulate arrays at 
their boundaries automatically. These capabilities collectively are called 
auto-indexing. When you enable auto-indexing and wire an array of any 
dimension from an external node to an input tunnel on the loop border, 
components of that array enter the loop, one at a time, starting with the first 
component. The loop indexes scalar elements from 1D arrays, 1D arrays 
from 2D arrays, and so on. The opposite action occurs at output tunnels— 
elements accumulate sequentially into 1D arrays, 1D arrays accumulate 
into 2D arrays, and so on.

Note

Auto-indexing is the default for every array wired to a For Loop. You can disable 
auto-indexing by popping up on the tunnel (entry point of the input array) and 
selecting Disable Indexing.

x[i]=ASCII code
of i

th

 character

Sine Pattern

String to Byte Array