<< Chapter < Page
  Digital signal processing - dsp     Page 3 / 27
Chapter >> Page >


The four classes that I will present and explain in this module are designed to make it easy for you to plot and examine large quantities of data.

Sample output for PlotALot01 class

The first class named PlotALot01 is designed for the plotting of large quantities of single-channel data. Figure 1 shows an example of the plotted output from this class when used to plot a small amount of data.

Figure 1. Sample output for PlotALot01 class.
Missing Figure.

Usage information

To use the class named PlotALot01 to plot data, you first instantiate an object of the class, and then you feed data to it as the databecomes available within your program.

When all of the data has been fed to the plotting object, you call a method named plotData on the object. This causes the object to produce one or more pages of plotted data in a stack on the screen. The page containingthe earliest data is on the top of the stack and the page containing the latest data on the bottom of the stack.

Plotting format

The first data sample is plotted on the left end of the top trace on the top page (titled Page: 0) . Successive data values are plotted from left to right across the page. When the data for the first trace reaches the right endof the trace, the next data sample is plotted at the left end of a new trace that is created below the current trace. Hence, the chronological order of thedata is from left to right, top to bottom.

A horizontal axis is drawn for each trace. Positive data values are plotted above the axis and negative values are plotted below the axis.

On to the next page

When the bottom trace on a page is filled, a new page is created automatically. The next data sample is plotted on the left end of the top traceon the new page and the process described above is repeated until that page also become full. Then a new page is created, etc.

Nearly unlimited plotting capacity

You can cause the page size to be as large as you want up to the full size of the screen on your computer. You can create as many pages as you want and youcan place as many traces on each page as you want.

Other than the amount of memory that is available to the Java virtual machine, (and perhaps some limit on the number of Page objects allowed by the operating system) , there is almost no limit to the number of pages that can be produced and the amount of data that can be plotted.

Millions of data values plotted

I have successfully plotted two million data values in 141 full screen pages on a modest laptop computer with no difficulty whatsoever. When I pushed thattotal up to eight million data values in 563 full screen pages, the plotting process slowed down, but I was still able to display and examine the plots. Thepractical limit on my computer seems to be somewhere between two million and eight million data values.

Two sample pages

Figure 1 shows two pages that were physically removed from the stack and arranged with the page containing the earliest data above the page containingthe latest data for publication in this module.

Questions & Answers

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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?
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Berger describes sociologists as concerned with
Mueller Reply
Got questions? Join the online conversation and get instant answers!
QuizOver.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?