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The code in Listing 32 draws the red traces shown in Figure 2 .

End of class plotalot02

Listing 32 signals the end of the overridden paint method, the MyCanvas class, the Page class, and the PlotALot02 class.

The class named PlotALot03

I will discuss the class named PlotALot03 in fragments. A complete listing of the class is provided in Listing 37 near the end of the module.

Much of the code in the class named PlotALot03 is very similar to the code in PlotALot02 . Therefore, this discussion will be brief, simply highlighting the differences between the two classes.

Two-channel data on alternating axes

This class is an update to the class named PlotALot02 . This class is designed to plot large amounts of data for two channels on alternatinghorizontal axes. One set of data is plotted using the color black. The other set of data is plotted using the color red.

Three steps for using the class

As before, there are three steps involved in the use of this class for plotting two-channel data:

  1. Instantiate a plotting object of type PlotALot03 .
  2. Feed pairs of data values to the plotting object by calling the feedData method once for each pair of data values. The first value in the pair will be plotted in black on one axis. The second value in thepair will be plotted in red on an axis below that one.
  3. Call the plotData method on the plotting object when all of the data has been fed to the object. This causes all of the data tobe plotted and also causes the Page objects to be rearranged so that page 0 is on the top of the stack.

A stack of page objects

The class produces a graphic output consisting of a stack of Page objects on the screen, with the data plotted on a Canvas object contained in the Page object.

Each Page object contains two or more horizontal axes on which the data is plotted. The class will terminate if the number of axes on thepage is an odd number.

Alternating axes

The two data sets are plotted on alternating axes as shown in Figure 3 with the data from one data set being plotted in black on one axis and the data fromthe other data set being plotted in red on the axis below that axis.

The earliest data is plotted on the pair of axes nearest the top of the page moving from left to right across the page. Positive data values are plottedabove the axis and negative values are plotted below the axis.

When the right end of an axis is reached, the next data value is plotted on the left end of the second axis below it skipping one axis in the process. Whenthe right end of the last pair of axes on the page is reached, a new Page object is created and the next pair of data values are plotted at the left end of the top pair of axes on that new page.

Testing with the main method

For self-test purposes, the main method instantiates a single plotting object and feeds two data sets to that plotting object. The datathat is fed to the plotting object is white random noise. One of the data sets is the sequence of values obtained from a random number generator. The otherdata set is the same as the first. Thus, the pairs of black and red data sets that are plotted should have the same shape making it easy to confirm that theprocess of plotting the two data sets is behaving the same in both cases.

Questions & Answers

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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
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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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