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Listing 25. Processing the other three ranges.
}else if(((int)data[row][col]>63)&&((int)data[row][col]<= 127)){ int temp = 4 * ((int)data[row][col]- 64); green = 255;blue = 255 - temp;}else if(((int)data[row][col]>127)&&((int)data[row][col]<= 191)){ int temp = 4 * ((int)data[row][col]- 128); green = 255;red = temp;}else if(((int)data[row][col]>191)&&((int)data[row][col]<= 254)){ int temp = 4 * ((int)data[row][col]- 192); red = 255;green = 255 - temp; }//end else

Gradient from aqua to green

The second range produces a smooth gradient from aqua to green. In this range, the green color value is held constant at 255 and the blue color value iscaused to decrease in inverse proportion to the normalized color value.

Gradient from green to yellow

The third range produces a smooth gradient from green to yellow. (Yellow is produced by mixing equal amounts of red and green.) Within this range, green is held constant at a value of 255 and the value of red increases indirect proportion to the normalized elevation value.

Gradient from yellow to red

The fourth range produces a smooth gradient from yellow to red. Within this range, the value of red is held constant at 255 and the value of green decreasesin inverse proportion to the normalized elevation value.

A homework assignment

A useful homework assignment would be for you to modify the program as follows:

Subdivide the total range into eight sub ranges instead of four as I did. Choose four additional colors that you can produce by mixing variouslevels of red, green, and blue. Modify the code to cause the colors to vary with a smooth gradient through those eight colors in succession.

The rest of the overridden paint method

The rest of the overridden paint method for this class is essentially the same as the code that I explained in Listing 16 through Listing 18 . Having set the current plotting color, the method goes on to paint a square of pixels in that color at the correct location. Then it draws the optional redaxes if specified. Therefore, I won't repeat that explanation. You can view this code in Listing 29 near the end of the module.

The class named CanvasType1scale

The inner class named CanvasType1scale is used to construct a color scale that matches the color algorithm used in the class named CanvasType1surface .

The overridden paint method for this class replicates the color algorithm in the overridden paint method for the CanvasType1surface class.

Except for the difference in the overridden paint method, the structure of this class is the same as the class named CanvasType0scale , which I discussed earlier beginning with Listing 19 . Therefore, I won't repeat that discussion here. You can view the class in Listing 29 near the end of the module.

Color Contour plot format

The class named CanvasType2surface is an inner class used to instantiate an object that plots a surface where each elevation on the surfaceis represented by a color taken from a color palette containing a finite number of colors. As written, the color palette contains 23 different colors and shadesof gray, but you can easily increase that number if you would like to do so.

Questions & Answers

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
what is biological synthesis of nanoparticles
Sanket Reply
Berger describes sociologists as concerned with
Mueller 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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