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(A different overloaded version, which I will discuss later, accepts a title string only and sets all of the plotting parameters to defaultvalues.)

Listing 6. The first overloaded constructor.
PlotALot01(String title,//Frame title int frameWidth,//in pixelsint frameHeight,//in pixels int traceSpacing,//in pixelsint sampSpace,//in pixels per sample int ovalWidth,//sample marker widthint ovalHeight)//sample marker hite {//constructor code continues here

Listing 6 shows the signature for this overloaded version of the constructor. The comments should make the code self explanatory.

Save the parameter values

With one exception, the code in Listing 7 simply saves the incoming parameter values in instance variables to make those values available to other members ofthe class.

Listing 7. Save the parameter values.
this.title = title; this.frameWidth = frameWidth;this.frameHeight = frameHeight; this.traceSpacing = traceSpacing;//Convert to pixels between samples. this.sampSpacing = sampSpace - 1;this.ovalWidth = ovalWidth; this.ovalHeight = ovalHeight;

The exception

The exception has to do with the parameter named sampSpace . This parameter is provided by the user in units of pixels per sample, becausethat seems to be the most natural way for a human to specify this plotting parameter. However, for computational purposes, it is better to have the valueof the number of pixels between samples, which is one less than the number of pixels per sample. This conversion is made during the saving of this parameterin Listing 7 .

A temporary Page object

As you will see later, the Page class consists of a Canvas contained in an AWT Frame . Because an AWT Frame takes on the look and feel of the operating system under which the program is running, it may be constructed differently under differentoperating systems. Many important plotting parameters depend on the size of the Canvas , which depends on the values of the insets (border width) for the Frame for that particular operating system.

(A good exercise would be for you to convert this class to Swing using a look and feel that is independent of the operating system.)

The code in Listing 8 instantiates a temporary Page object solely for the purpose of obtaining information about the width and the height of the Canvas object. This information is used later to compute a variety of other importantparameter values.

Listing 8. A temporary Page object.
Page tempPage = new Page(title);int canvasWidth = tempPage.canvas.getWidth(); int canvasHeight =tempPage.canvas.getHeight();

Display some information

Listing 9 gets and displays information about the plotting object on the command line screen. An example of thisoutput was shown earlier.

Listing 9. Display some information.
//Display information about this plotting // object.System.out.println("\nTitle: " + title); System.out.println("Frame width: " + tempPage.getWidth()); System.out.println("Frame height: " + tempPage.getHeight()); System.out.println("Page width: " + canvasWidth); System.out.println("Page height: " + canvasHeight); System.out.println("Trace spacing: " + traceSpacing); System.out.println("Sample spacing: " + (sampSpacing + 1)); if(sampSpacing<0){ System.out.println("Terminating");System.exit(0); }//end if

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
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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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