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The methods named f1, f2, f3, f4, and f5

As you can see in Listing 1 , each of these methods receives a double value as an incoming parameter and returns a double value. In essence, each of these methods receives a value for x and returns the corresponding value for y .

One plotting area per method

Each of these methods provides the data to be plotted in one plotting area. The method named f1 provides the data for the top plotting area, the method named f2 provides the data for the first plotting area down from the top, and so forth.

(For example, if the getNmbr method returns a value of 4, the method named f5 will never be called. If getNmbr returns 5, the method named f5 will be called to provide the data for the bottom plotting area.)

How does it work?

Each plotting area contains a horizontal axis. The plotting program moves across the horizontal axis in each plotting area one step at a time (moving in incremental steps equal to the plotting parameter named xCalcInc ) .

At each step along the way, the plotting program calls the method associated with that plotting area, ( f1 , f2 , etc.) , passing the horizontal position as a parameter to the method.

The value returned by the method is assumed to be the vertical value associated with that horizontal position, and that is the vertical value that isplotted for that horizontal position.

Doesn't know and doesn't care

The plotting program doesn't know, and doesn't care how the method decides on the value to return for each value that it receives as an incoming parameter.The plotting program simply calls the methods to get the data, and then plots the data.

Computed "on the fly"

For example, the returned values could be computed and returned "on the fly" as is the case in the sample program named Graph01Demo , which we will look at shortly.

Returned from an array

On the other hand, the values could have been computed earlier and saved in an array, as will be the case in the sample program named Dsp002 example that we will look at later.

From a disk file, a database, the internet, etc.

The returned values could be read from a disk file, obtained from a database on another computer, or obtained from any other source such as another computeron the internet. All that matters is that when the plotting program named Graph01 calls one of the five methods named f1 through f5 , passing a double value as a parameter, it expects to receive a double value as a return value, and it will plot the value that it receives.

It is up to you

It is up to you, the author of the data-generator program, to decide how you will implement the methods named f1 through f5 . In some cases, the implementation may be simple. In other cases, the implementation may be morecomplex. The first case that we will examine, Graph01Demo , is very simple. A subsequent case, Dsp002 , is not so simple.

The class named Graph01Demo

Although this is a very simple class definition, I am going to break it down and discuss it in fragments in order to help you focus your attention on theimportant points. A complete listing of the class definition is shown in Listing 37 near the end of the module.

Questions & Answers

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
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Digital signal processing - dsp. OpenStax CNX. Jan 06, 2016 Download for free at https://legacy.cnx.org/content/col11642/1.38
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