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  • Listing 1 . Beginning of the main method.
  • Listing 2 . A 3D parabolic surface,
  • Listing 3 . Display six surface images.
  • Listing 4 . Beginning of the ImgMod29 class.
  • Listing 5 . Establish display format for log conversion.
  • Listing 6 . Copy the input elevation data.
  • Listing 7 . Convert to log data if required
  • Listing 8 . Normalize the surface elevation data.
  • Listing 9 . The method named scaleTheSurfaceData.
  • Listing 10 . Create an appropriate pair of Canvas objects.
  • Listing 11 . Add the Canvas objects to the Frame.
  • Listing 12 . Register an anonymous WindowListener object.
  • Listing 13 . The method named getCenter.
  • Listing 14 . Beginning of the class named CanvasType0surface.
  • Listing 15 . Beginning of overridden paint method.
  • Listing 16 . Instantiate a Color object.
  • Listing 17 . Set colors and draw squares.
  • Listing 18 . Draw the optional red axes.
  • Listing 19 . Beginning of the class named CanvasType0scale .
  • Listing 20 . The overridden paint method.
  • Listing 21 . Beginning of the class named CanvasType1surface.
  • Listing 22 . Beginning of the overridden paint method.
  • Listing 23 . Set white and black for max and min values.
  • Listing 24 . Process elevations from 1 to 63 inclusive.
  • Listing 25 . Processing the other three ranges.
  • Listing 26 . The method named getColorPalette.
  • Listing 27 . Beginning of overridden paint method.
  • Listing 28 . Set the color value.
  • Listing 29 . Source code for ImgMod29.java.

General Discussion

Displaying 3D data can be fairly difficult

One of the more difficult aspects of engineering and scientific computing is displaying three-dimensional (3D) surfaces in ways that are meaningful to persons who need to view and to analyze those surfaces. The basic problem isthat it is necessary to display the 3D surface on a 2D media, such as a computer screen.

(At least that was true before the advent of 3D printers. However, as of October 2015, a 3D printer is not readily available for routine use by most people.)

Therefore, some compromise is always required.

Different approaches are available

Various approaches have been devised for accomplishing this objective including:

A 3D plotting program

I will provide and explain a program in this module that makes it very easy to display a 3D surface as a Grayscale plot, a Color Shift plot, or a ColorContour plot. The program supports six different plotting formats. Three of those plotting formats are illustrated in Figure 1 .

(The images shown in Figure 1 are different views of the wave-number spectrum resulting from performing a 2D Fourier Transform on a box in thespace domain. The use of 2D Fourier Transforms will be the main topic of a future module.)

Figure 1. 3D views of a wave-number spectrum.
Missing Figure.

Figure 1 shows the same 3D surface plotted using three different plotting formats. Going from left to right, Figure 1 shows:

  • Grayscale plot
  • Color Shift plot
  • Color Contour plot

Grayscale plot

The plot on the left in Figure 1 is the old standby method in which the elevation of each point on the surface is represented by a shade of gray withthe highest elevation being white and the lowest elevation being black.

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
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