# 1.1 Variables in labview mathscript

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This module provides a brief introduction to the use of variables in LabVIEW MathScript.

## Variables in labview mathscript

A variable in LABVIEW MATHSCRIPT is a named value. Using variables allows us to manipulate values symbolically, which is particularly useful when programming.

Suppose we wish to compute the circumference of a circle of diameter 5 units using the formula $c=\pi d$ . We could first set the variable d to a value of 5: >>d = 5 d =5.000 Then we could compute the circumference and assign its value to the variable c : >>c = pi*d c =15.708 To execute this command, LABVIEW MATHSCRIPT computes the product of the value of d (which LABVIEW MATHSCRIPT knows because we earlier set it to 5) and the value of pi (which is a pre defined variable in LABVIEW MATHSCRIPT) and stores the value of the product in the variable c .

Variable names must begin with an upper- or lower-case letter. They may contain letters, digits, and underscores; they may not contain spaces or punctuation characters. LABVIEW MATHSCRIPT is case sensitive, so A and a are different variables.

## Valid variable names

Which of the following are valid variable names?

• a
• B
• ecky_ecky_ecky_ecky_ptang_zoo_boing
• ecky ecky ecky ecky ptang zoo boing
• 2nd
• John-Bigboote

• Valid.
• Valid.
• Valid.
• Invalid, because the variable name contains spaces.
• Invalid, because the variable name begins with a number.
• Invalid, because the variable name contains a dash.

LABVIEW MATHSCRIPT has several predefined variables. The most commonly used include

• ans - the default variable in which computation results are stored.
• pi - π.
• i or j - $\sqrt{-1}$ .
Once assigned, variable names remain until they are reassigned or eliminated by the clear command.

LABVIEW MATHSCRIPT variables can contain several types of numerical values. These types include the following:

• Scalar values - scalar is a mathematical term for a single value (i.e. a number). c and d in are scalar variables.
• Vectors - a vector is an ordered series of numbers.
• strings - LABVIEW MATHSCRIPT variables may also contain strings of characters.

#### Questions & Answers

are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Introduction to labview mathscript. OpenStax CNX. Aug 06, 2006 Download for free at http://cnx.org/content/col10370/1.3
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 By Hannah Sheth By Dakota Bocan By JavaChamp Team By OpenStax By OpenStax By Tod McGrath By John Gabrieli By OpenStax By Mahee Boo By Jonathan Long