Read from binary measure file starting a specified time

I have a write to measure VI running on a data acquisition. It's saving data in a binary format with XML headers from a channel.
I want to have the capability of reading back in the data starting at a specified time. What's the best way to do it? In another words, I don't want to read in the entire file from the beginning. I want the ability to start a specified time. I know that t0 is saved. I have the sampling frequency.
Thanks.

I assume that you are writing to a TDM file. If you want to perform random reads, you can do so with the binary file that contains the raw data. I've attached a VI that writes
a 100x1 array in a binary file and you can then read back the element you need without having to read all the data from the file. The Set File Position allows you to do so.
Message Edited by KostasB on 03-07-2008 05:23 AM
Attachments:
Read_Write_Binary.PNG ‏24 KB
Write_Read_BinaryData.vi ‏18 KB

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    // Imported packages.========================================================
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              SetOperations setC = new SetOperations();
              SetOperations setD = new SetOperations();
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    membera
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    membera
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    membera
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    [1] Skoda
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    Number of set members: 3
    [0] Hillman
    [1] Skoda
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    Regards
    Marco
    I need to read from a text file. When the token
    encounters a particular word (command) I need to read
    the next line and perform some actions. However, this
    part is working but it is repeating the values again
    and again until it encounters the next particular
    word (command). Hope that someone will help me out,
    as always when I posted a problem in these forums.
    SetOperations class - contains the set
    methods
    // Imported
    packages.=============================================
    ===========
    import java.util.Vector;
    import java.util.Iterator;
    // Public class
    SetOperations.========================================
    =======
    public class SetOperations
    // Instance
    e
    variables.============================================
    =======
    private Vector v = null; // Creates new instance of
    f vector.
         protected int memberCount;
    Constructor.==========================================
    ================
         public SetOperations()
              v = new Vector();
         } // end constructor.
    // Method
    d
    isMember.=============================================
    =========
    * Checks whether the element is already a member of
    f the set.
         * @return True if Vector v contains Object member.
         public boolean isMember(Object member)
    if (member != null) // only if Object member is not
    ot null.
    return v.contains(member); // returns true if
    if vector already contains member.
              else
    return false; // returns false if vector does not
    not contain member.
         } // end public boolean isMember(Object member).
    // Method
    d
    addMember.============================================
    =========
         * Adds a member to the set.
         * @return Adds Object member to Vector v.
         public void addMember(Object member)
    //if (! v.contains(member)) // only if element is
    is not already a member.
    if (isMember(member) == false) // only if element
    nt is not already a member.
                   v.add(member); // adds a member.
         } // end public void addMember(Object member).
    // Method
    d
    countMember.==========================================
    =========
    * Returns the number of members present in the
    e vector.
         * @return Number of elements present in the vector.
         public int countMember()
              return v.size();
         } // end public int countMember().
    // Method
    d
    isSetEmpty.===========================================
    =========
         * Returns true if set is empty.
    * @return True if no elements are present in Vector
    r v.
         public boolean isSetEmpty()
    return v.size() == 0; // returns 0 if no elements
    ts are present in the vector.
         } // end of public boolean isSetEmpty().
    // Method
    d
    printMember.==========================================
    =========
         * Displays member/s of the set.
         * @return Prints element/s present in the vector.
         public void printMember()
    for (int i = 0; i < v.size(); i++) // iterates
    es through present members.
    System.out.println("[" + i + "] " + v.get(i)); //
    // displays member/s present in the vector.
         } // end of public void printMember().
    } // end public class SetOperations.
    SetTextLauncher class - reads from a text file
    and implements the set operations
    // Imported
    packages.=============================================
    ===========
    import java.util.*;
    import java.io.*;
    // Public class
    SetTestLauncher.======================================
    =======
    public class SetTestLauncher
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