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Listing 17. Set colors and draw squares.
//Set the color value. g.setColor(color);//Draw a square of the specified size //in the specified color at the// specified location. g.fillRect(col * blockSize,row * blockSize, blockSize,blockSize); }//end col loop}//end row loop

Paint a colored square

Finally the code in Listing 17 calls the fillRect method of the Graphics class to paint a square of pixels of the specified size at the specified location in the specified color.

This process is repeated for every elevation point on the 3D surface data, producing an output similar to the leftmost image in Figure 1 .

Listing 17 signals the end of the nested for loops. When the code in Listing 17 finishes execution, the 3D surface has been plotted, but it does not yet contain the optional red axes.

Draw the optional red axes

Listing 18 tests to see if the value of the axis parameter is true. If so, it uses the information obtained earlier from the getCenter method, along with the setColor and drawLine methods of the Graphics class to draw the optional red axes shown in the images in Figure 1 . These axes always intersect at the center of the image.

Listing 18. Draw the optional red axes.
if(axis){ g.setColor(Color.RED);g.drawLine(0,vertCenter,2*horizCenter, vertCenter);g.drawLine(horizCenter,0,horizCenter, 2*vertCenter);}//end if }//end paint}//end inner class CanvasType0surface

Listing 18 also signals the end of the overridden paint method and the end of the inner class named CanvasType0Surface .

Beginning of the class named CanvasType0scale

An object of the class named CanvasType0scale is used to plot the calibration scale that is displayed immediately below the surface plotfor the Grayscale plot format. The beginning of this class and the constructor for this class are shown in Listing 19 .

Listing 19. Beginning of the class named CanvasType0scale .
class CanvasType0scale extends Canvas{ //Set the physical height of the scale strip// in pixels. int scaleHeight = 6 * blockSize;CanvasType0scale(){//constructor//Set the size of the Canvas based on the // width of the surface and the size of the// square used to represent each value on // the surface.setSize(dataWidth * blockSize,scaleHeight); }//end constructor

How it works

Basically this class (as well as the other two classes that create calibration scales) operates by constructing an artificial surface, (which is like a long thin board) , positioned such that one end has an elevation of 0 and the other end has an elevation of 255. The length of thislong thin surface is equal to the width of the surface plot for the Grayscale plot format.

The same Grayscale color algorithm is applied to this artificial surface that is applied to the real surface. The result is a linear representation of thecolors produced by the color algorithm from the lowest elevation at 0 to the highest elevation at 255. This result is displayed immediately below the realsurface with the lowest elevation at the left end and the highest elevation at the right end. An example is shown in the leftmost image in Figure 1 .

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
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
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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