File I/O from XY graph

A beginner's question: How to save the reading of my XY graph as the .txt format?
I know there are many ways such as .tdms.... but is there a simple and quick way to do this?
My current program only reads the data from DAQ which is the Y axis of teh XY graph.
Thanks,
Lei
Solved!
Go to Solution.
Attachments:
IR autocorrelation_time_beta_a.vi ‏83 KB

It depends what extension you give to the file. If you use a .xls then you will be able to open it in Excel.
If not an xls then open it in Notepad.
But if you realy want to save it as text then follow the other method (OPEN - WRITE (to a text file) - CLOSE)
But don't forget if you go that way to convert your data to text first.
Have a look at the image below but you will find many examples to do that.

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Read a text file and display a xy graph

Hi!
I am using LabVIEW 8.5, and I am trying to read columns from
a file and plot with xy graph. I can do it with two channels, but I am having
problems when the numbers of channels connected increase (maybe six or ten).
My text file looks like this:
[Where first column x = time, the rest of the columns are
channels = y]
8.828        22.604        23.076            [The number of channels connected can
change]
9.828        22.604        22.604
10.828      21.658        22.131
11.828      22.131        22.131
12.828      22.131        22.131
13.828      22.604        22.604
14.828      21.658        22.604
15.828      22.131        22.131
16.828      21.658        23.076
17.828      22.604        22.131
18.828      22.131        22.604
I attached a picture of what I already try… Now I am trying
a combination of those. If anyone has some
advice or suggestion, please let me know.
Sincerely,
Julieta.
Solved!
Go to Solution.
Attachments:
xygraph.PNG ‏25 KB

Thanks for the advice!... I just modified what I had a
little bit and it is working, maybe is not the optimums solution…
I would like to make the time invisible in the graph… It that possible? I attached a picture of my graph, because my English is not good. There are two lines near to 22 (two channels
connected at that moment), and a line near to 0 which is time (the strong pink one). I would like to make invisible the strong
prink one only. I try to make invisible,
but I fail… I changed colors looking for another solution and I fail again,
because it is taking the colors that I choose for the channels. I can not disable because I need it to make
the x axes works with the time that I already saved.
If someone has an advice or suggestion I really appreciate it…
Sincerely,
Julieta.
Attachments:
xygraph.PNG ‏9 KB

How can I find the local maximum in each interval from a graph?

I have very less experience in labview and need some helps. I am currently using Labview 2013.
I am analysing a very big data file. I want to find the values of the local maximum (the peak) in every 1000 data points. Is there anyway to do it?
I also want to have a control on when to start finding the local maximum point (after 10000 data points) and when to end it ( at 30000 data points)
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A06-1-11_1.xlsx ‏642 KB

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File I/O from XY graph

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