<< Chapter < Page
  Digital signal processing - dsp     Page 19 / 24
Chapter >> Page >

The code in Listing 19 establishes the size of the calibration scale surface.

The overridden paint method

Listing 20 shows the overridden paint method that is used to plot the calibration scale for the Grayscale plot format.

Listing 20. The overridden paint method.
public void paint(Graphics g){ //Vary from white to black going from 255// to 0. Color color = null;//Don't draw in top row. Leave it blank to // separate the scale strip from the// drawing of the surface above it. for(int row = 1;row<scaleHeight;row++){ for(int col = 0;col<dataWidth;col++){//Compute the value of the scale // surface.int scaleValue = 255 * col/ (dataWidth - 1);//See the class named // CanvasType0surface for explanatory// comments regarding the following // color algorithm.int red = scaleValue; int green = red;int blue = red; color = new Color(red,green,blue);g.setColor(color); g.fillRect(col * blockSize,row * blockSize, blockSize,blockSize); }//end col loop}//end row loop }//end paint}//end inner class CanvasType0scale

Because you already understand the color algorithm for the Grayscale plot format, the code in Listing 20 should not require further explanation. This code establishes the elevation level for each point on the calibration surface andpaints the box that represents that elevation in the appropriate color.

Color Shift plot format

The CanvasType1surface class is used to instantiate an object that represents a normalized 3D surface with the colors ranging from blueat the low elevations through aqua, green, and yellow to red at the high elevations with a smooth gradient from 1 to 254.

(The lowest elevation with a value of 0 is colored black. The highest elevation with a value of 255 is colored white.)

The center image in Figure 1 is an example of this plotting format.

Beginning of the class named CanvasType1surface

The beginning of the class and the constructor for the class named CanvasType1surface are shown in Listing 21 .

Listing 21. Beginning of the class named CanvasType1surface.
class CanvasType1surface extends Canvas{CanvasType1surface(){//constructor //Set the size of the Canvas based on the// size of the surface and the size of the // square used to represent each value on// the surface. setSize(dataWidth * blockSize,dataHeight * blockSize); getCenter();}//end constructor

The beginning of each of the three classes that produce the three plotting formats is essentially the same. Therefore, the code in Listing 21 is essentially the same as the code in Listing 14 and should not require further explanation. The significant differences between the three classes lie in theiroverridden paint methods.

Overridden paint Method

The overridden paint method for this class, which begins in Listing 22 , is probably the most complex of the three.

Listing 22. Beginning of the overridden paint method.
public void paint(Graphics g){ Color color = null;for(int row = 0;row<dataHeight;row++){ for(int col = 0;col<dataWidth;col++){ int red = 0;int green = 0; int blue = 0;

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
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
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
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
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
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Digital signal processing - dsp. OpenStax CNX. Jan 06, 2016 Download for free at https://legacy.cnx.org/content/col11642/1.38
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Digital signal processing - dsp' conversation and receive update notifications?

Ask