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    This module is included in aLens by: National InstrumentsAs a part of collection:"Introduction to LabVIEW MathScript"

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    "This course provides a brief introduction to LabVIEW MathScript, the textual math componenet of LabVIEW. The modules for this course include typical syntax and programming methods commonly used […]"

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  • NI Signal Processing display tagshide tags

    This module is included inLens: Digital Signal Processing with NI LabVIEW and the National Instruments Platform
    By: Sam ShearmanAs a part of collection:"Introduction to LabVIEW MathScript"

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    "Tutorial / Introduction to LabVIEW MathScript, a text-based component of National Instruments LabVIEW that allows you to run your .m file scripts in LabVIEW Virtual Instruments."

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Programming in LabVIEW MathScript-While Loops

Module by: Anthony Antonacci, Darryl Morrell. E-mail the authors

Based on: Programming in MATLAB-While Loops by Darryl Morrell

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Summary: This is a tutorial on using while loops in LabVIEW MathScript.

The While Loop

The while loop is similar to the for loop in that it allows the repeated execution of LABVIEW MATHSCRIPT statements. Unlike the for loop, the number of times that the LABVIEW MATHSCRIPT statements in the body of the loop are executed can depend on variable values that are computed in the loop. The syntax of the while loop has the following form: 


while expression
    % LABVIEW MATHSCRIPT command 1
    % LABVIEW MATHSCRIPT command 2
    % More commands to execute repeatedly until expression is not true
end
where expression is a logical expression that is either true or false. (Information about logical expressions is available in Programming in LABVIEW MATHSCRIPT-Logical Expressions.) For example, consider the following while loop: 

n = 1
while n < 3
    n = n+1
end
This code creates the following output: 

n =

     1

n =

     2

n =

     3

Note that in all of this example, the LABVIEW MATHSCRIPT commands inside the while loop are indented relative to the while and end statements. This is not required by LABVIEW MATHSCRIPT but is common practice and makes the code much more readable.

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