Display saved lvm file to graph with timestamp

Hi,
I'm having headache displaying my data with proper time-stamping. There are so many methods to save data. here I've decided to save it as a text delimited file format as lvm. a segment of my vi screen shot is attached. I want to use this way instead of other methods is the flexibilty it offers. I will be able to add on more data to store as I develop the vi. (So I'm storing data from DAQ assistant and my calculated values.) I attached a the screenshot of the file I read too.
I would like to use another vi to open this file and plot it to a graph/chart to display as a trending of the data acquired. Can someone pls advise mi on what is a better way for mi to do it?
Thanks alot!
Poh
Solved!
Go to Solution.
Attachments:
datalogging vi.JPG ‏82 KB
logged data.JPG ‏76 KB

Hi Krisna,
Sorry for the late reply, I was rushing to complete my project, wasn't able to reply.
Yes, I managed to solve it. Anyway I used such high rate in the DAQ assistant is to allow continous mode acqusition & use a software filter instead of hardware filter. however writing to file in this way - writing string into .lvm, max is 10 samples/sec. unless I use tdm (I'll then log everything).
I wasn't able to display proper time-stamping was due to the fact that I didn't add in the start-time timestamp that's required in displaying of timestamp in waveform. I'll not be able to go down to my lab, & my machine do not have LabVIEW, so what I can do is to extract portions of my report to share.
For the portion that I used to display graph (can be seen from the attachment), I deleted the 1st column, which is the timestamp (for spreadsheet viewing), but extracted the 1st element - the converted to DBL timestamp when I start logging in the DAQ vi (written together with the header).
This extracted (could be seen as a bunch of numbers in the lvm file) and and converted back to timestamp type and wired to build waveform block, providing the start-time of the waveform.
Next, I replace the use of chart with graph, as graph is suitable for plotting data acquired, and chart is better for run-time display of data. now it seemed to work fine for me, except for loading time may take a while for larger files.
Thanks for your participation in this thread!
Cheers!
Poh
Attachments:
display graph.JPG ‏39 KB
data.JPG ‏171 KB

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