XY graph manipulation

I am plotting an XY graph (X for time and Y for an amplitude). As i plot this graph the whole set of points are presented.
I wish i could present the graph, reducing the X axis width(10 seconds width) and iterate to plot 10 sec to 10 sec(segments of 10 seconds).
one problem is time values are not spaced uniformaly.
could do give me some hints?
thank you,

Hello Guillaume,
Thank you for contacting National Instruments.
Are you plotting the data as you acquire it in real time? Or is this data that has already been collected and you just want to plot it in 10 second increments?
If you are acquiring and plotting your data at the same time, you can use a waveform chart with the X-Axis set to absolute time format. In waveform chart properties, select the Format and Precision tab >> select X-Axis from the pull down menu >> select Absolute time from the menu below.
Then select the Scales tab >> select X-Axis from the pull down menu >> deselect the Autoscale box >> set Minimum to 0 and Maximum to 10.
The chart will now automatically scroll as points are plotted, but will stay 10 seconds wide.
If you would like to segment a currently existing array into 10 second increments, you will have to use some array functions (such as Threshold 1D Array) to split the array when the time stamp passes a 10 second mark.
If this does not help, I would be glad to take a look at your code.
Sean C.
Applications Engineer
National Instruments

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# Java VM: Java HotSpot(TM) Client VM (11.0-b15 mixed mode windows-x86)
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--------------- T H R E A D ---------------
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--------------- S Y S T E M ---------------
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inferno0069 wrote:
Thanks, but I'd already found that out from the first search I did.
We have no JNI code. I am pretty certain that no library we use has any either, though if you have a 100% way to verify or enforce that, it could be helpful.
Short of parsing class files that isn't possible. A library might use a OS library so you can't just look for a shared library.
Assuming I'm right in that last paragraph, is it more likely that we found some sort of bug in Sun's native code (maybe already discovered?) or that there was a hardware failure (e.g. bad memory / CPU produces wrong bytes)?Or software on the system that is causing it. Patches in the wrong order, bad patches, corrupted, etc can cause it.
>
Is there a different part of hs_err_... that I could post to make answering these questions easier? The full thing didn't fit because of the character limit on this forum.An actual VM bug with a crash is only 'solvable' by creating a bug and attaching the crash file.
Posting it here is unlikely to produce a solution.
A solution is unlikely to show up soon via the bug nor the forums. If you have a sales/support contract with Sun that might lead to a solution.
If you don't have that then your only choice is to use log files to determine where the crash occured, and then try different code to see if it goes away.

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Hi charlthedancer,
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Kind regards,
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Test.vi ‏14 KB

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Hi Randall
Apologies for replying somewhat late but I have been out of the office for a few days.
Your suggestions and code helped me greatly and led to solving my query so thank you for that.
There is one more thing (well many many more but I will place new posts for those however that you might be able to answer for me.
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IMAQ_8-bit_to_picture v1.vi ‏15 KB
Test Image.png ‏42 KB

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Certified Professional Instructor
Certified LabVIEW Architect
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"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

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smercurio_fc wrote:
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Message Edited by altenbach on 09-17-2007 09:04 AM
LabVIEW Champion . Do more with less code and in less time .
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Gérard Férini
Switzerland
http://home.tiscalinet.ch/gferini/
remove -move to reply personally
"Greg McKaskle" wrote in message
news:xEmJc.43762$[email protected]..
> > I went into the function pallette-->signal manipulation-->align and
> > resample
> >
> > and found something that may be useful, but I'm not sure how to use
> > it. I guess I have to play around with it by trial and error. Was this
> > the VI seetting that you were referring t
o?
> >
>
> The option I was talking about is for the entire VI. It resets the
> value of all indicators prior to running. The setting is located in the
> VI Properties dialog on the execution page I believe. In the end, there
> are multiple ways to get this to work, and if you want just a few
> indicators to be reset, you want to use locals or control methods, but
> th eVI Properties is a convenient way to get all indicators cleared at
once.
>
> Greg McKaskle
>

XY graph manipulation

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