Labview 8.2 Read Binary File, no pos offset option anymore?!

I have a VI that worked perfectly well in 7.1 and now I've opened it in 8.2 it doesn't work and I can't revert back to 7.1 because I accidently pressed save.
In 7.1 I used the combination of open, read and close file functions to read parts of a large binary data file - I cannot read the whole file into Labview 8.2 as it fills the memory. There isn't a terminal in the 'read binary file' function in 8.2 for 'pos offset' which is what I used to use in 7.1. How am I supposed to open the file now? Surely they have not removed such a useful facility entirely - is there another way to do it that I am not aware of?
Many thanks in advance for help,
Sarah

smercurio_fc wrote:
André, at first I could not understand your response, ...
Must be my Dutch way of writing English
Regards,
André
Using whatever version of LV the customer requires. (LV5.1-LV2012) (www.carya.nl)

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Read_Binary_File_Error_LV2012.png ‏426 KB

Hi Kahr,
"error 1" tells one of the input parameters is wrong: it's either the path or the cluster datatype! The error message only mentions a file path AS AN EXAMPLE!
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How to open and read binary files?

How do I open and read Binary files?

Did you look on The Unarchiver's web site where it has a link to older versions? http://theunarchiver.googlecode.com/files/TheUnarchiver3.2_legacy.zip
The best thing to do is ask your friends what programs they used to produce these files, or at least what format files they are producing. Otherwise it's like being shown a car and given a bundle of 200 keys with no idea to which one to use, or even if any of them work with that car.
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I need some help in reading binary files. This is the code I have so far.
import java.io.InputStream;
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Solved!
Go to Solution.
Attachments:
topo.zip ‏89 KB

Ah, the first 10 characters are a string!
After opening the file, use the Read From Text File with count set to 10. Then use the Decimal String to Number to convert this string into your "record size".
NOTE: The text indicator was just for debug purposes. You don't really need it.
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Unofficial Forum Rules and Guidelines
Attachments:
Read record size.png ‏12 KB

Write-read binary file Error 116

Hi all,
I am saving double, numeric array data into a binary file and then trying to read it back but keep on getting Error 116 (cannot read from binary file).
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Attachments:
Write_Bin.JPG ‏154 KB
Read_Bin.JPG ‏100 KB

Just as an amendment to my original post, I can succesfully read my data in MATLAB using the standard fread function with double precision. I presume that this means that there is nothing wrong with the way I write the data into the file. However, it would be useful for me to be able to read it directly from Labview without having to build matlab executables etc etc...
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Azazel,
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"Hello all!
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Hello,
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How to read binary files wrt specific BYTE size and length??

Hello Everyone,
I have a project I want to accomplish. I have a binary file, and I would like to read the data and print on wfm in a specific order and size.
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i have 30 bytes of sample 1.
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smercurio_fc, sorry for the confusion, i will try my best to explain...
1. No, i don;t have to read the file again, once it has read, I used
while loop just to see the data updating (i press run, and before i can
visualize i have the waveforms; i can get rid of the while loop)
2. I have 30 different values of 1 sample. actually, the data is cmg
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data_read.vi ‏24 KB

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Hi Everyone,
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======>
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Read Copy of Binary File - Static.vi ‏105 KB
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One solution is to include the File Read into the case structure. But you need to find a way to return the different types of data records as you obviously can't connect them to the same indicator.
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a division of Test & Measurement Solutions

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Hi there,
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Alain S wrote:
I was thinking of a cluster but how do I define a fix string length in LV?
Also, is a cluster the right way to go?
So, like I said any help is welcome
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Defining a fixed sized string officially not possible, and even the non official way will get you bugs, so let's do the official route.
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Ton
Message Edited by TonP on 28-08-2009 08:44 PM
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Display PDF in different window by reading Binary file in MIME folder.

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/* Changed the code */
Message was edited by: Bala Krishnan

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Labview 8.2 Read Binary File, no pos offset option anymore?!

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