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Writing the file using Write to SGL and reading the data using Read from SGL

Hello Sir, I have a problem using the Write to SGL VI. When I am trying to write the captured data using DAQ board to a SGL file, I am unable to store the data as desired. There might be some problem with the VI which I am using to write the data to SGL file. I am not able to figure out the minor problem I am facing.  I am attaching a zip file which contains five files.

1)      Acquire_Current_Binary_Exp.vi -> This is the VI which I used to store my data using Write to SGL file.

2)      Retrive_BINARY_Data.vi -> This is the VI which I used to Read from SGL file and plot it

3)      Binary_Capture -> This is the captured data using (1) which can be plotted using (2) and what I observed is the plot is different and also the time scare is not as expected.

4)      Unexpected_Graph.png is the unexpected graph when I am using Write to SGL and Read from SGL to store and retrieve the data.

5)      Expected_Graph.png -> This is the expected data format I supposed to get. I have obtained this plot when I have used write to LVM and read from LVM file to store and retrieve the data.

 

I tried a lot modifying the sub VI’s but it doesn’t work for me. What I think is I am doing some mistake while I am writing the data to SGL and Reading the data from SGL. Also, I don’t know the reason why my graph is not like (5) rather I am getting something like its in (4). Its totally different. You can also observe the difference between the time scale of (4) and (5).

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The binary data file has no time axis information, it is pure y data. Only the LVM file contains information about t(0) and dt. Since you throw away this information before saving to the binary file, it cannot be retrieved.

 

Did you try wiring a 2 as suggested?

(see also http://forums.ni.com/ni/board/message?board.id=BreakPoint&message.id=925 )

Message Edited by altenbach on 07-29-2005 11:35 PM

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Hello Sir, I am looking for a working version of VI which will be similar to attached VI. Here I am not able to combine the datapoints and time stamps. Looking forward for your reply.
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