Best method for plotting data array?

I am reading data from a Delta Motion controller and writing that data to an array in my vb.NET program. The data is not time stamped but I know what the sampling interval is (0.001s). I want to take that data and plot it on my Waveform Graph. What is the best method for doing this? I'm sure this is simple, but I'm new to MS and LV.
Private Sub btnRampUpA_Click(sender As Object, e As EventArgs) Handles btnRampUpA.Click
Dim Axis0ActualPrsData() As Single = New Single(4096) {} 'Create array for data from the RMC controller to be read into
Dim Axis0Actual() As AnalogWaveform(Of Single)
If RMC.IsConnected(PingType.Ping) = True Then 'Check to make sure comms to RMC is good before trying to read data from it
Try
RMC.ReadFFile(FileNumber150.fn150Plot0StaticUA0, 112, Axis0ActualPrsData, 0, 4095) 'read the plot data where sample period = 0.001
Catch ex As ReadWriteFailedException
MessageBox.Show("Unable to read plot data from the RMC. " & ex.Message)
End Try
End If
End Sub
Thank you

PlotYAppend appears to be the answer according to the white page, although I don't have it working as of yet. Can someone confirm?

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Best method for passing data between nested components

I have a fairly good sized Flex application (if it was
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I also know how to make public variables/functions inside the
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What is the best way to pass data between A and D (in both
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If I use an event to pass from D to A, it seems as though I
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I have a remote object in Component A that goes out and gets
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Any ideas? I hope that my explanation is clear enough...
Thanks.
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Peter (or anyone else)...
To take this example to the next (albeit parallel) level, how
would you go about creating a class that will let you just
capture/dispatch local data changes? Following along my original
example (Components A-D),let's say that we have this component
architecture:
Component A
--Component B
-- -- Component C
-- -- -- Component D
-- -- Component E
-- -- Comonnent F
How would we go about creating a dispatch scheme for getting
data between Component C and E/F? Maybe in Component C the user
picks a username from a combo box. That selection will drive some
changes in Component E (like triggering a new screen to appear
based on the user). There are no remote methods at play with this
example, just a simple update of a username that's all contained
within the Flex app.
I tried mimicking the technique that we used for the
RemoteObject methods, but things are a bit different this time
around because we're not making a trip to the server. I just want
to be able to register Component E to listen for an event that
would indicate that some data has changed.
Now, once again, I know that I can bubble that information up
to A and then back down to E, but that's sloppy... There has to be
a similar approach to broadcasting events across the entire
application, right?
Here's what I started to come up with so far:
[Event(name="selectUsername", type="CustomEvent")]
public class LocalData extends EventDispatcher
private static var _self:LocalData;
// Constructor
public function LocalData() {
// ?? does anything go here ??
// Returns the singleton instance of this class.
public static function getInstance():LocalData {
if( _self == null ) {
_self = new LocalData();
return _self;
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dispatchEvent(new CustomEvent(userObj, "selectUsername"));
Then, in the component that wants to dispatch the event, we
do this:
LocalData.selectUsername([some object]);
And in the component that wants to listen for the event:
LocalData.getInstance().addEventListener("selectUsername",
selectUsername_Result);
public function selectUsername_Result(e:CustomEvent):void {
// handle results here
The problem with this is that when I go to compile it, it
doesn't like my use of "dispatchEvent" inside that public static
method. Tells me, "Call to possibly undefined method
"dispatchEvent". Huh? Why would it be undefined?
Does it make sense with where I'm going?
Any help is greatly appreciated.
Thanks!
-Jacob

Best Method for Saving Data to File?

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Meg T wrote:
Is it correct to say that in your method, the indexing results in building up the data into one large array of data before saving it to the file with the column headers and filenames appended? If we are writing data at 1Hz for 6 hours of time, will we run into an issue being able to store all the data?
Yes the indexing will build up one large array. If this is a problem due to array size and memory, you will have to write more often. You can write every second, that should not be a problem. You should still write the column names to the file first, and have the append input set to False (or nothing wired in since the default is false). This will create a new file with the headers only. Then the data write has a True wired in so that the append takes place. If running for 6 hours and gathering data once per second, your array will contain 36,006 rows of data. I'm not sure if that would cause a memory problem or not.
Meg T wrote:
it also seems difficult to incorporate headers into express VI if you are writing the data continuously as a part of a loop with the "append" option.
If you write the headers before the loop as I have shown, and use append inside the loop, you will not have problems.
- tbob
Inventor of the WORM Global

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pjbarbour wrote:
I'm not quite sure what would be the best method for this. My client is using a 4x3 screen and SD projector at a large meeting, and they want me to just create a DVD that is letterboxed. I have one Premiere CS5 project that's 1920x1080, and another project that's 720x480 widescreen (1.2). I created a new sequence in both projects that is 720x480, 4x3 (0.9), and what I do is just scale the timeline down so that it's letterboxed. Is this the best method for achieving this? Or would you do something else? I don't like the idea of scaling my timeline down in Premiere.
Hello.
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What is the best method for writing Multicolumn List data to a text file?

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Everything is Free! Until you have to pay for it.

Hello,
I think that the answer to your question it's on the example that I've made right now.
See the attached files....
Software developer
www.mcm-electronics.com
PS: Don't forget to rate a good anwser ; )
Currently using Labview 2011
PORTUGAL
Attachments:
Multi.vi ‏12 KB
Multi.PNG ‏6 KB

Best method for incremental replication to backup xserve?

I was just trying to figure out what would be the best method for routinely incrementally replicating a primary xserve. I have a secondary that has the same hardware. I thought about using scheduled tasks with Carbon Copy Cloner over say a Crossover cable to the secondary xserve. However, doing this backup would continually wipe out the network settings for the secondary mac? I could do the replication to a secondary drive and then just make that drive the boot drive in the event of data corruption on the master server?
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Message was edited by: MacTech_09

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Hi,
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This page show you how to use NetInfo Manager:
http://mactechnotes.blogspot.com/2005/09/mac-os-x-as-nfs-server.html#c1168221713 40271068
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http://www.bresink.com/osx/NFSManager.html
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======
You do know about the need to match userids & groupids.
# display uid and gid
ls -ln
sudo find / -user short-user-name -exec ls '-l' {} \;
# on Mac OS X
you will need to go into NetInfo Manager and select user and find your short-user-name. Change uid and guid.
#on Linux look in
/etc/passwd
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# with care...
# change 1000:20 to your values for uid:gid
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/Applications
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First off, I have to say that JMX in Java 6 is terrific stuff. Bundling jconsole in with Java has made JMX adoption so much easier for us.
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Path,
I did go with #1 and it worked out great. Every node in our tree is an ObjectName node. Works very well for us.
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Hi team,
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When bouncing- what's best method for smallest file size/highest quality?

I am in the process of embedding 3 mp3's into a PDF to submit as a portfolio. The PDF also has text, and two scores included, and with the 3 embedded mp3's it can't be more than 10mb.
So my question is: When bouncing a project out of Logic, what is the best method for getting the smallest file size, but retaining the best audio quality? And once it's out of Logic and it is an mp3 or other type of audio file, is there a best format for compressing it further, and still maintaining the relative quality?
I bounced out the three projects into wav's. Now I am using Switch for Mac to compress them down to smaller Mp3's. I basically need them to be about 3 mb each. Two of the recordings sound OK at that size, but they are just MIDI(one project is piano and string quartet, the other is just piano- all software instruments. The recording that combines MIDI and Audio and has more tracks (three audio tracks and 10 Midi/software instrument tracks)and sounds completely horrible if I get it under 5 mb as an mp3. The problem is that I need all three to equal around 9mb, but still sound good enough to submit as a portfolio for consideration into a Master's program.
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Thank you...

MUYconfundido wrote:
I am in the process of embedding 3 mp3's into a PDF to submit as a portfolio. The PDF also has text, and two scores included, and with the 3 embedded mp3's it can't be more than 10mb.
So my question is: When bouncing a project out of Logic, what is the best method for getting the smallest file size, but retaining the best audio quality?
The highest bitrate that falls within your limits. You'll have to calculate how big your MP3's can be, then choose the bitrate that keeps the size within your limit. The formula is simple: bitrate is the number of kilobits per second, so a 46 second stereo file at 96 kbps would be 96 x 46 = 4416 kbits / 8* = 552 kBytes or 0.552 MB. (*8 bits = 1 Byte)
So if you know the length of your tracks you can calculate what bitrate you need to keep it within 10 MB total.
I consider 128 kbps the lowest bearable bitrate for popsongs and other modern drumkit based music. Deterioration of sound quality is often directly related to the quality of the initial mix and the type of instruments used in it. Piano(-like) tones tend to sound watery pretty quickly at lower bitrates, as do crash and ride cymbals. But don't take my word for it, try it out.
And once it's out of Logic and it is an mp3 or other type of audio file, is there a best format for compressing it further, and still maintaining the relative quality?
You can only ZIP the whole thing after that, but that is just for transport. You'll have to unzip it again to use it. And no, you cannot compress an MP3 any further and still play it.
I bounced out the three projects into wav's. Now I am using Switch for Mac to compress them down to smaller Mp3's.
That is silly, you could have done that in Logic, which has one of the best MP3 encoders built in. And how good encoders are will especially come out at bitrates around or below 128, which you might be looking at.
I basically need them to be about 3 mb each.
So, one more scrap of info we need here: how long are those three pieces, exactly? I'll calculate the bitrate for you - but please bounce 'm directly out of Logic as MP3's. They will very probably sound better than your WAV-conversions made with Switch.
!http://farm5.static.flickr.com/4084/4996323899_071398b89a.jpg!
Two of the recordings sound OK at that size, but they are just MIDI(one project is piano and string quartet, the other is just piano- all software instruments. The recording that combines MIDI and Audio and has more tracks (three audio tracks and 10 Midi/software instrument tracks)and sounds completely horrible if I get it under 5 mb as an mp3. The problem is that I need all three to equal around 9mb, but still sound good enough to submit as a portfolio for consideration into a Master's program.
Length of the piece? And does the .Wav bounce you have sound OK?

Best method for plotting data array?

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