How to save data series in a file with possibility to overwrite last line

How to manage write/overwrite data on selected lines in a file?

it depends what sort of datafile you have.
on a spreadsheet file you could read the whole file, overwrite or insert data and resave it.

Similar Messages

  • How to save data in spred sheet file as it is ?

    hello,
    I want to save one table in spred sheet file same as i read from my external device.
    here in attachment I have attached the vi.
    that is the sample data which i want to save for example in first column i want only numbers without any floating points.
    and in remaining column what everdata is, it should be same.
    In attachment file name 11 is the same file which i want but i am getting always like attachment 2 file,
    can you please guide me how can i get data same which is displayed in labview table.
    Thank you very much in advance.
    Solved!
    Go to Solution.
    Attachments:
    Untitled 3.vi ‏6 KB
    11.log ‏1 KB
    2.txt ‏1 KB

    This code - using Format into String - creates an output very similar to the 11.log file. You can write the string to a file with Write to Text File or write the string array with Write to Spreadsheet File.vi.  Write to Spreadsheet File.vi internally converts String array to what is in String and then writes it as text, so it makes more sense to just use Write to Text File. Using Write to Spreadsheet File.vi will make extra copies of the data, which can become a problem if the dataset is large.
    Read the Detailed Help for Format into String for more information on the format codes available.
    Lynn
    Attachments:
    Format data.vi ‏8 KB

  • How to parse data from a text file with no convenient delimiters?

    I need to read data from a text file.  This file contains one line of data with the repeating pattern "time 00 ADVar2: ___ Height: ____ time 01 ADVar2: ___ Height: ___ ..."  I need LabView to parse out the "time" and "height" values, build an array with the values, and graph the correlation on an X&Y plot.  Does Labview have an automated way to read to the input data file and parse out the correct values, even without convenient delimiters?  Thank you.

    You actually do have a convenient delimiter: "time". Thus, you can make an array using that as the delimiter. Only caveat is that the first array element will be empty. Then you can conveniently use the Scan From String function in a for-loop. Something like this:
    Message Edited by smercurio_fc on 11-21-2008 03:13 PM
    Attachments:
    Example_VI.png ‏9 KB

  • How to save data into an excel file ?

    I am working on using computer to corol HP8510 Network Analyzer System. Firstlly, I save my data into a notepad.Now I want to save them directly into an excel file. Is there anybody can give me any clue?
    Thanks
    Attachments:
    S.vi ‏165 KB

    The attached zip file contains several VI's to read and write directly to Excel using ActiveX. There are several example VI showing how to use everything. This set is saved in LabVIEW 6.0.2.
    I suggest you unzip these to your user.lib directory so you'll be able to easily access them from the functions palette.
    I have not actually used these, but others that have say they have worked well for them.
    Good Luck
    Ed
    Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
    Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.
    Attachments:
    excel_lv6i.zip ‏898 KB

  • How to save data results into text file

    I want to solve an equation of degree 2 for example, and results are displayed in a text file

    Like many other software coding forums, we don't want to give hand outs.  We are more than happy to give hand ups.  Show that you've tried to figure out the problem and show us where you are stuck.  Then we will be glad to help you get you unstuck.  If we just give you an answer, you will learn nothing.
    As far as writing to a text file, look in the File I/O palette for the Write to Text File primitive.  Also, if you go to Help->Find Examples... and do a search for "text file" you will get some examples of how to use it.
    There are only two ways to tell somebody thanks: Kudos and Marked Solutions
    Unofficial Forum Rules and Guidelines

  • How to save excel report as CSV file with ActiveX

    Hi,
    I'm trying to save my excel test report as a CSV file using ActiveX and I'm having difficulty getting started.  I can't find an invoke node method that enables CSV file conversion. 
    Can anyone shed light on this?  See attached screenshot.
    Thanks
     

    As long as you are using the Report Generation Toolkit, there is no need to use ActiveX for the purpose of saving the Excel file -- Save Report will do that for you.  You can then export (as text) all of the Excel data and use the Write Spreadsheet File to make the .CSV file.  Here is how I would rewrite the final bits of your code --
    I cleaned up the wires around Excel Easy Table a bit.  You'll see I made a VI Icon for Replace Filename, which does (I think) a nicer job of self-documenting than showing its Label.  To make the filename, add the correct extension (.xlsx for Excel, .csv for CSV), use Build Path to combine Folder and Filename, and wire to Save Report.
    The next two functions add the Extract Everything and Write to Spreadsheet, using a Comma as a separator, which makes a CSV copy for you.
    Bob Schor

  • How generate a XML file & how to save data in that file?

    hi,
    How to generate an xml file & how to add data in that xml file? is there anyone who can help me about this? Firstly i need to open a xml file and after that i need to save user data in that file? how i will do it? What will be the solution of this? please give me solution........
    with regards
    Bina

    With an API like Xerces you can parse an XML document into a DOM tree. You can do modifications on that tree manually and then write it back out as XML data.
    http://xerces.apache.org/xerces2-j/

  • Could u plz help me to find simple example for how to save data file in a spread sheet or any other way in the real time controller for Sbrio 9642 using memory or usb flash memory

    Could u plz help me to find simple example for how to save data file in a spread sheet or any other way in the real time controller for Sbrio 9642 using memory or usb flash memory

    Here are a few Links to a helpful Knowledge Base article and a White Paper that should help you out: http://digital.ni.com/public.nsf/allkb/BBCAD1AB08F1B6BB8625741F0082C2AF and http://www.ni.com/white-paper/10435/en/ . The methods for File IO in Real Time are the same for all of the Real Time Targets. The White Paper has best practices for the File IO and goes over how to do it. 
    Alex D
    Applications Engineer
    National Instruments

  • How to save Android contacts as Excel file on Mac computer?

    I want to manage and edit my contacts on my cell phone, my friend suggested me save them as Excel format! So now i am trying this way, but i can't find the right method to do this! Do you know how to save Android contacts as Excel file on Mac computer?

    If you want to save Android Phone contacts to Excel format, you can have a try the following method:
    Step 1. Connect Your Android Phone to Computer
    After downloading and installing the Coolmuster Android Assistant software on your computer, launch it and you will get the program interface prompts you to connect your phone to the computer. Just use a USB cable to connect your phone to the computer and the program will detect the connected phone automatically. If it is the first time to run this software, you may encounter the following picture and be required to enable USB debugging on your phone at first. If your device can be detected by the program, you can directly skip to the next step.
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    All your phone data are categorized on the top menu. To transfer Android phone's contacts, you can go to click the "Contacts" icon to enter the Contacts window. Navigate to the left panel and click on the "All Contacts" option, then, all the contacts in your phone will show in list on the right window. Mark the contacts you want to backup on your computer and click the button of "Backup".
    Step 3. Start to export contacts to computer at once
    Once you click on the "Backup" button, there will be a "Path" dialog appears, asking you to choose an output location where you want to save the exported contacts. Specify an output folder and then click the "Ok" button. Then, all your phone contacts will be exported to the output location immediately, with all the email address, company's name, home address, and more contacts info perfectly kept in the output CSV or XLS file.

  • How to import data from a text file into a table

    Hello,
    I need help with importing data from a .csv file with comma delimiter into a table.
    I've been struggling to figure out how to use the "Import from Files" wizard in Oracle 10g web-base Enterprise Manager.
    I have not been able to find a simple instruction on how to use the Wizard.
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    I tried to use the "imp" utility in command-line window.
    After I entered (imp), i was prompted for the username and the password and then the buffer size as soon as i entered the min buffer size I got the following error and the import was terminated:
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    Import: Release 10.1.0.2.0 - Production on Fri Jul 9 12:56:11 2004
    Copyright (c) 1982, 2004, Oracle. All rights reserved.
    Username: user1
    Password:
    Connected to: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Produc
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    With the Partitioning, OLAP and Data Mining options
    Import file: EXPDAT.DMP > c:\securParms\securParms.csv
    Enter insert buffer size (minimum is 8192) 30720> 8192
    IMP-00037: Character set marker unknown
    IMP-00000: Import terminated unsuccessfully
    Please show me the easiest way to import a text file into a table. How complex could it be to do a simple import into a table using a text file?
    We are testing our application against both an Oracle database and a MSSQLServer 2000 database.
    I was able to import the data into a table in MSSQLServer database and I can say that anybody with no experience could easily do an export/import in MSSQLServer 2000.
    I appreciate if someone could show me how to the import from a file into a table!
    Thanks,
    Mitra

    >
    I can say that anybody with
    no experience could easily do an export/import in
    MSSQLServer 2000.
    Anybody with no experience should not mess up my Oracle Databases !

  • How to save data in ztable after editing in alv report

    how to save data in ztable after editing in alv report?

    Hi,
        Please find the attachment below.This may be usefull to you.
         [http://wiki.sdn.sap.com/wiki/display/Snippets/ALV-Editingandsavingtheeditedvaluesin+Database%28OOPS%29]
    Regards,
    Ramakrishna Yella.

  • How do I create an interactive PDF file with variable data

    We would like to basically do a 'mail merge' of our list of customers with an interactive PDF file (including videos, menus, etc - not just form fill out and web links) to create a single PDF file that contains multiple mail pieces ... one for each customer ... with each mail piece being customized for that customer.  Customizations would include different greetings (Dear Bob, Dear Dana, etc), as well as different charts based on data unique to the customer, different photographs, etc.
    I've seen that InDesign and Acrobat Professional can be used to create an interactive PDF (such as from http://tv.adobe.com/watch/ask-the-adobe-ones/14-calling-rufus-about-interactive-pdf-making).  However I don't understand how I can insert data from a database, csv file, excel file etc into the PDF file so that each page, or each set of pages, within the PDF can be customized.
    Can anyone point me to a tool to use for this?
    Thanks,
    Bob Kendall

    For that kind of volume and unattended operation, you want InDesign Server – which is the server/high volume edition of INDD.
    From: Adobe Forums <[email protected]<mailto:[email protected]>>
    Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
    Date: Thu, 3 Nov 2011 06:58:07 -0700
    To: Leonard Rosenthol <[email protected]<mailto:[email protected]>>
    Subject: How do I create an interactive PDF file with variable data
    Re: How do I create an interactive PDF file with variable data
    created by Ti26E31DSxxx<http://forums.adobe.com/people/Ti26E31DSxxx> in PDF Language and Specifications - View the full discussion<http://forums.adobe.com/message/4005459#4005459

  • How to load data from a  flat file which is there in the application server

    HI All,
              how to load data from a  flat file which is there in the application server..

    Hi,
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    If your file name keeps changing on a daily basis i.e. name_ddmmyyyy.csv, then in the Extraction tab you have the option to write an ABAP routine that generates the file name. Here you will need to append sy-datum to "name" and then append ".csv" to generate complete filename.
    Please let me know if this is helpful or if you need any more inputs.
    Thanks & Regards,
    Nishant Tatkar.

  • How to write data to an XML file present under application server

    frnds: can ne one tell me, how to write data in to a file, which is present under a application server
    Ex: i want to write a string data in to a file test.txt which is present under "http://localhost:8080/<some_webapp>/test.txt"
    Note:i have deploted a service<some_webapp> under Tomcat/webapps dir

    Very simple. A servlet can writes to that file if it has the good rights.
    In the servlet get (or post) method, use a code like this:
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            writer .close();
        } catch (Exception e) {
           e.printStackTrace();
    }Hope That Helps

  • How to save my emails and adressbook files from an old ibook?

    How to save my emails and adressbook files from an old ibook (bought around 2002) ?
    The screen from the old ibook doesn´t work anymore (logicboard problem I guess).
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    I want to delete the files after that as well, because I wanna give away the old ibook and don´t want anyone to read my emails!
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    Fire Wire Cable

    Don't know how helpful this will be but I often copy mail from one computer to another, I drag the mail from the mail window to the other computers drop box, then from the other computer double click it and mail asks me what I want to do with it, of course without a screen you'd need to use back to my mac.
    If you don't have back to my mac running, you could set up a second user account on the newer mac, import everything via target mode as suggested by c above, and then drag the mail to the first user account drop box.

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