How do I convert a earlier numeric array in LabVIEW 5.x or eralier to a Waveform Data Type in LabVIEW 6i?

I am trying to convert old arrays in LabVIEW 4.x and 5.x to the new Waveform Data Type in LabVIEW 6i. Please ref. Doc. LabVIEW 6.0 Upgrades Notes page 7-8 at a source of reference. Has anyone ever tried it?

Hi Andy,
I do this all of the time. On the block diagram palette is the Waveform subpalette. The second icon is the build waveform vi. This has three elements, to, dt, and y. The to is the initial time (typically zero), the dt is the delta time in your waveform and the y is where you wire up you old array data to. The output is a waveform datatype.
Regards,
Marc

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How do I convert an earlier numeric array in LabVIEW 5.x or earlier to a Waveform Data Type in LabVIEW 6i?

I am trying to convert old data arrays in LabVIEW 4.x & 5.x to the new Waveform Data Type in LabVIEW 6i. Please Ref. Doc. LabVIEW 6.0 Upgrades Notes page 7-8 as a source.
Has anyone ever tried it?

try to use Buil Waveform VI after loading old data from files ...
LabView Help : "Build Waveform
Builds a waveform or modifies an existing waveform. If you do not wire an input to waveform, Build Waveform creates a new waveform based on the components you enter. If you do wire an input in waveform, the waveform is modified based on the components you specify. This function is expandable."

How do I convert a 1-D array of cluster of 5 elements into a 2-D array of numbers? (history data from a chart)

Hello,
in my vi I have a chart with 5 Plots displaying measurement data.
The user should be able to save all the history data from the chart at anytime. (e.g. the user watches the chart and some event happens, then he presses a "save"-button)
I know, that I can read out the history data with a property node. That is not the problem. The problem is, how do I handle the data? The type of the history data is a 1-D array of cluster of 5 elements.
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How do I convert a 1-D array of cluster of 5 elements into a 2-D array of numbers?
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Johannes
Greetings Johannes
Using LabVIEW 7.1 and 2009 recently
Solved!
Go to Solution.

Gerd,
thank you for the quick response and the easy solution.
Look what I did in the meantime. I solved the problem too, but muuuch more complicate :-)
And I have converted the numbers to strings, so that I can easily write them into a spreasheet file.
Johannes
Message Edited by johanneshoer on 04-28-2009 10:39 AM
Greetings Johannes
Using LabVIEW 7.1 and 2009 recently
Attachments:
SaveChartHistory.JPG ‏57 KB
SaveChartHistory.JPG ‏57 KB

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One additional thought that may be helpful. Once you get the Y component of the waveform graph you are going to attempt to wire this into a formula node. You can do one of two things with that array. Put a for loop around the formula node and index the array into and out of the for loop. This allows you to do scalar math on the data. It is also possible to index and array in a formula node. The following KnoledgeBase demonstrates how to do this: http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/9d72b6069346942386256a0d00604ed4?OpenDocument

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Edited by: JongpilKim on May 17, 2009 10:48 PM
Edited by: JongpilKim on May 17, 2009 10:51 PM
Edited by: JongpilKim on May 17, 2009 10:53 PM

thanks a lot for your reply.
now, i use udp socket for communication, but, i must use hardware pci communication later.
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public void putDouble(double val){ .... }
public void putFloat(float val){ ... }
public byte[] toByteArray(){ return this.buf; }
public class PacketData {
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helper.putInt(a);
helper.putInt(b);
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but, it's not enough.
is there another way to send a object data?
in java language, i can't access memory directly.
in c language, if i use struct, i can send struct data to copy memory by socket and it's very fast.
Edited by: JongpilKim on May 18, 2009 5:26 PM

Need help in converting string to numeric array

I am trying to convert a string to a numeric array ... the first # in the string gets cut off, the last three seem to come through.
This may be fairly simple, but I really haven't worked with the string functions all that much.
Help would be appreciated.
Thanks,
Attachments:
String to Array Example.vi ‏10 KB

Steve Chandler wrote:
If you remove the first and last byte from the string using string subset then the read spreadsheet string would probably have worked.
Yup.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
String to Array ExampleMOD2.vi ‏10 KB

How to change the color of Numeric array elements (seperately) programmatically using property node??

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Solved!
Go to Solution.

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I am currently active on.. MainStream Preppers
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Hi,
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Insufficient data!
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Attachments:
model.vi ‏28 KB

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How do I convert a earlier numeric array in LabVIEW 5.x or eralier to a Waveform Data Type in LabVIEW 6i?

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