specific line of reading a file

Similar Questions

• Add data at the end of a specific line in the text file

  Hello

  I'm trying to add data at the end of the last 4 lines of the text file attached with the ' table to add.  4 rows (422.5800 entry), I would add the first entry of the 'Array to add' entry, on the 5th line to add the second entry of the 'Add picture' and so on.  How can I do this?

  Any help will be appreciated.

  Sincerely,.

  hiNi.

  After re-reading your post, I think that's what you really want to start adding after the first 4 rows.

• How do I script in DIAdem to include specific lines of code (similar to .ini in LabVIEW files) based on the computer/user?

  I took Basic training courses so DIAdem Advanced and have been scripting for several months.  I am interested in how to include specific lines of code based on the computer.  Told me it would be similar to .ini in LabVIEW files, although I've never used myself .ini files.

  Hi Karen,.

  What do you mean by "includes the lines of code?  Do you mean what happens when you run a command 'ScriptInclude()' or 'ScriptCmdAdd()' in a tiara VBScript?  Or do you mean that you want to run several lines as DIAdem begins, similar to 'ScriptStart() '?

  What do you mean by "computer-based?  Do you mean you want to implement different batch files on different computers, but you are still using the same file (named) command on each target computer?  Or do you mean that you want to implement the same command on all target computers file, but you want different commands to run this file based on the computer on which you are.  In the latter case, how do you determine computer on which you are on - MAC address, logged in user name, or what?

  Brad Turpin

  Tiara Product Support Engineer

  National Instruments

• read the specific number of the txt file

  Hello

  Anyone know how to read specific numbers to a txt file.

  If the operator choose tab1. The values displayed will be the first list of numbers. Otherwise the values shown on the table are the second list

  Thanks in advance for your help

  Please find enclosed my VI and the txt file

  My best regards

  Nadia

  The format of your example tab.txt file in do you need?

  If not, I do not consider using a format such as LabVIEW Config File VI or a common standard such as XML.

  If you don't need the exact format in the example, then you will need to write your own parser for him.

• read a file line-by-line ascii

  I'm new with CVI, and I need to read a file ascii with several lines in the following format:

  at_test_2_to_13 = 0.861000
  at_testabcd_9_to_21 = 0.712000
  at_abdgx_5_to_8 = 0.892000

  Here is the code to write to the ascii file:

  sprintf (ctResult, "% s=%f\n", TestName1, result1);
  WriteFile (fileHdl, ctResult, StringLength (ctResult));

  A moment later, I need to read the text file, find the name of test (for example, "at_testabcd_9_to_21") and record the value after the sign '=' (in this case 0.712000). The number of lines in the text file is not fixed.

  I write data to the file without any problem, but I'm right in the reading of the data.

  I'd appreciate any help in writing this code in CVI.

  Thanks in advance

  I thank very you much for all the help!

  The INI file is the way to go on this case.

  With the help of a colleague, I used the following to create and read from the ini:

  DllExport __declspec(dllexport) __stdcall #define

  int DllExport WriteToIniFile(char *Section,char *Key,char *StringVal,char *IniFileName)
  {int Err = 0;
  WritePrivateProfileString (Section, Key, StringVal, IniFileName);
  Return (Err);
  }
  int DllExport ReadFromIniFile(char *Section,char *Key,char *ReadStr,char *IniFileName)
  {int Err = 0;
  DWORD CharCount.
  CharCount = GetPrivateProfileString (Section, Key,"", ReadStr, sizeof (ReadStr), IniFileName ");
  Return (Err);
  }

  Also thank you very much for all the help with the code C. I have been using VB most of my career, and since I am labwindows user now I need to catch up on my C!

  Thank you once again

• Reading single line of the text file

  I use the following code to read a .txt file

  private String readTextFile (String fName) {}
  String result = null;
  FileConnection fconn = null;
  DataInputStream is = null;
  try {}
  fconn = (FileConnection) Connector.open (fName, Connector.READ);
  is = fconn.openDataInputStream ();
  Byte [] = IOUtilities.streamToBytes (is) data;
  result = new String (data);
  } catch (IOException e) {}
  System.out.println (e.getMessage ());
  } {Finally
  try {}
  If (null! = is)

  is. Close();
  If (null! = fconn)
  fconn. Close();
  } catch (IOException e) {}
  System.out.println (e.getMessage ());
  }
  }
  return the result;
  }

  I want to print a single line instead of the file around so I read that I need to store the contents of the file into an array and then get the index of the line. Problem is that I couldn't find any information on how to do it. Can someone give me a shot. Thanks in advance.

  This isn't a problem with encoding. You just need to do a little extra accounting and adjust start and end indices to remove these characters. To treat the "\r\n" of line termination style, you can maintain a flag (initially false) to indicate that the previous line ended with a \r; If a line begins with \n, it should be treated as the end of a line (empty) if the flag is true (in which case it should be ignored).

  If you want to extract all lines (not just the first), then it may be easier to do this accounting while avoiding a separate function. Something like this (untested):

  // read the file into a byte array 'data'; then:
  Vector lines = new Vector();
  boolean endCR = false;
  int start = 0;
  for (i = start; i < data.length; ++i) {
    if (data[i] = 0xD) {
      lines.addElement(new String(data, start, i - start));
      endCR = true;
      start = i + 1;
    } else if (data[i] = 0xA) {
      if (endCR && i == start) {
        start++;
        endCR = false;
      } else {
        lines.addElement(new String(data, start, i - start));
        start = i + 1;
      }
      endCR = false;
    }
  }
  String[] results = new String[lines.size()];
  lines.copyInto(results);
  

• I have Acrobat Standard XI and recently downloaded CD Player for a specific use. Reader became my default for open PDF files once it has been installed. How can I get Acrobat Standard to be once more my fault?

  I have Acrobat Standard XI and recently downloaded CD Player for a specific use. Reader became my default for open PDF files once it has been installed. How can I get Acrobat Standard to be once more my fault?

  Hi nancye22519208 ,

  Please right-click on any PDF on your system, then go to properties > under general, you will find "opens with". Here you will see 'change' option, by clicking on it, wil give you a window from which you can choose the Acrobat Standard XI as a default for PDF files.

  Kind regards

  Christian

• Read a line in a txt file

  Hi all

  I need to know how to read entire of any txt file lines. For example, I have this in a txt file:

  testline1

  testline2

  testline3

  and I need to read only the line 2 (text "testline2").

  I know how to read the file:

  var file = File(app.activeScript.parent.fsName + '/test.txt');
  file.open("r");
  var str = file.read(); // whole content of "test.txt" is now in variable "str"
  file.close();
  

  but I don't know how to read ONLY for example to line 2. Can you help me with this someone please?

  Thank you very much in advance

  1. use the function of a file object readln: Adobe InDesign CS6 (8,0) object model JS: file

  2. look in the sample scripts; FindChangeByList.jsx uses "readln".

• Reading a file of OS with size greater than 32 KB line

  Hi experts,
  
  
  I have a PL/SQL function that reads a file generated by a product of part 3 - Windows product displays a single line of text. I intend to read the file into pieces of 32K, do some string manipulation and copy into a CLOB that I spend for further processing. He eventually embeded in a CLOB containing WordML and output to a file. The CLOB is not saved in the database.
  
  I use UTL_FILE for work, FOPEN and GET_LINE. However, this operation fails for files with more than 32K characters in the line. Is there another way I can read the file?
  
  Obviously I can do processing on the file outside the Oracle to divide it into smaller lines, however, this will affect performance.
  
  Kind regards
  Arun

  Hello Arun,

  Welcome to the forum.

  You can read a file directly in a CLOB

  CREATE OR REPLACE
  FUNCTION getFile
      (
       p_directory     IN all_directories.directory_name%TYPE
      ,p_filename      IN VARCHAR2
      )
      RETURN CLOB
  IS
      v_bfile             BFILE;
      v_file              CLOB;
      v_error_out         INTEGER;
      dest_offset         INTEGER := 1;
      src_offset          INTEGER := 1;
      bfile_csid          INTEGER := 0;
      lang_context        INTEGER := dbms_lob.default_lang_ctx;
      e_inconvertibleChar EXCEPTION;
  BEGIN
  
      v_bfile := bfilename( p_directory,p_filename);
  
      dbms_lob.fileOpen( v_bfile, dbms_lob.file_readonly );
  
      dbms_lob.createTemporary(v_file, TRUE);
  
      dbms_lob.loadClobFromfile(
           v_file
          ,v_bfile
          ,dbms_lob.lobMaxSize
          ,dest_offset
          ,src_offset
          ,bfile_csid
          ,lang_context
          ,v_error_out
          );
      dbms_lob.fileClose(v_bfile) ;
  
      IF v_error_out = dbms_lob.warn_inconvertible_char THEN
          RAISE e_inconvertibleChar;
      ELSIF v_error_out != 0 THEN
          RAISE_APPLICATION_ERROR(-20001,'Unknown errornumber '||v_error_out,TRUE);
      END IF;
  
      RETURN v_file;
  
  EXCEPTION
      WHEN e_inconvertibleChar THEN
          RAISE_APPLICATION_ERROR(-20001,'Inconvertible charset',TRUE);
  END getFile;
  

  Concerning
  Marcus

  Published by: Marwim on 10.07.2012 17:24

• UTL_FILE get line previous reading of a file

  Hello
  
  I read a file with UTL_FILE
  
  I am writing a procedure that reads a file.
  Sometimes, I need to get back the previous line, is it possible to get it?
  
  I tried this but it does not work:
  ...
  fHandler UTL_FILE. TYPE_DE_FICHIER;
  fHandler2 UTL_FILE. TYPE_DE_FICHIER;
  ...
  1 < 2 while loop
  fHandler2: = fHandler;
  ...
  Chamois: = readbuffer (fHandler2); <-here I suppose that fHandler2 becomes different from fHandler but looks like I'm wrong and are always the same
  
  If (buff is false) then
  raise my_exception;
  end if;
  
  end loop;
  
  * Here fHandler must have the previous value of fHandler2 but are identical
  
  When my_exception then
  do something;
  end of procedure;
  
  
  
  
  
  Thank you

  A file descriptor is just a pointer to a memory area that contains details about the current state of the e/s access. To assign a file handle with the value of another it does not start from the beginning of the file again, but gives you just two pointers on the same thing.

  You can browse backwards in a file using the UTL_FILE. Procedure FSEEK, well I have have experienced some problems with this and generally easier to simply close and reopen the file.

  Also use external tables to read the file as a single VARCHAR2 lines and you can then access using SQL, as much as you like and that you specify the rownum to get the lines you want.

• Syntax to detect the line feed or newline read text file?

  I have a SQR (aka Hyperion Production Reporting) program that treats a comma-delimited text file.
  
  Sometimes one of the fields contains carriage returns and line breaks, that's not groovy, as is the record delimiter.
  The program currently handles this situation by disgarding records that do not contain the specified number of fields.
  
  I would like to scan the file before treatment, pickling, transport and line breaks, returns when they are integrated in a record.
  I have problems with the syntax required to recognize these characters, however.
  
  The program reads the file in a string (for example read 1 $record_buffer: #len).
  then it executes a while loop that examines the $record_buffer string one character at a time.
  
  I tried a direct comparison: If $char = Chr (10) or $char = Chr (13)
  I tried to assign a chr() value to a variable before the comparison: Let $LF = chr (1)... If $char = $LF
  I tried using code before the comparison: encode '< 10 >' in $LF... If $char = $LF...
  
  Could someone help me with this?
  
  Thank you!
  Laura

  Here's the syntax that works:

  #ifdef EBCDIC
  encode "<13><37>" in $hr
  #else
  encode "<13><10>" in $hr
  #end - if

  (replace the return with the null character)

  LET $descrlong = translate (& descrlong Chr (13), ")

  OR try the following code:

  !**********************

  ! Retrieve a line *.

  !**********************

  ! This local function / procedure will look for tank 13 which is a line terminator. The position where is returned

  ! to the routine.

  ! Parameters: $strToRead = this string that contains the formula is parsed to find the tank 13 (end of line) identifier

  ! : #startPos = the position where we need to find the identifier EOL

  ! : #PositionFound - this by the reference variable returns the position where the EOL.

  !

  BEGIN-process Get-Line($strToRead,#startPos,:#PositionFound)

  Let #PositionFound = instr ($strToRead, chr (13), #startPos)

  Proceedings

• How to read two files (one updates every second, the other is constant) simoltaneously

  Dear all,

  I'd appreciate if someone help me.

  I want to read two files, one is the temperature that updates every second, and the other is energy hysteresis that has specific lines and is constant.

  I had a program in the discussion forum to read a file as it is updated. I checked this program in my case and it works.

  Then I added playback file hysteresis energy to the existing file. But while I run the program, the energy hysteresis file is read with all the lines.

  But the goal is that every time the updates of the temperature, I need to read a line of the file hysteresis energy.

  in this way every second, so, I have a new temperature data and a row of the other file.

  I tried to use 'for loop' inside the program, but it did not work, because the temperature reading will stop until that end of the loop.

  I joined the program.

  Could someone help me how read only a row of hysteresis energy file every time that the temperature updated?

  IS that what you wanted to achieve?

• Only specific index of reading

  Hello

  I would like to use the Boolean to select the columns in the table index to read reading of the spreadsheet file. As stated in the mitdb .txt file (102), should I read only column index 4 and index 7 (V2 and V5)!

  Any help would be appreciated.

  Thank you

  Wasabi

  So if I understand correctly, you have a previously assigned table 9 columns, and you read a file. This file can contain anywhere from 1 to 9 columns, and the first line indicates the columns that are included in the file. You want to read the file and replace specific columns in your table 2D Nx9. Is this correct? If so, then perhaps the following method is what you really want:

  

• You want to read binary files in some parts of the 500th row in the 5 000th row.

  I have files of 200 MB of 1000561 lines binary data and 32 columns when I read the file and sequentially conspire full memory of the generated message.

  Now, I want to read the file in pieces as the 500th row 5,000th row with all the columns and it draw in the graph.

  I tried to develop logic using functions file advanced set file position and the binary file reading block, but still not get the sollution.

  Please, help me to solve this problem.

  Thanks in advance...

  Hi ospl,.

  To read a specific part of the binary, I suggest to set the file position where you want to read the data and specify how many blocks you must read binary file for reading binary file.VI

  for example, if you write table 2D binary file, and then mention you data type this 2D chart and make your account (5000-500). Then together, you produce position. If you have 32 DBL data type and column then it is 256 to the second row and 256 * 500 for line 501th. Use this number as input into your position.vi file get.

  I hope you find you way through this.

• Remove the last comma before reading csv files

  Hello

  I'm working on a VI that reads a lot of files csv (created by an application) using the built-in "worksheet File.vi reading" before combining in a report by using the excel report generation tool. 'All lines' are read in the csv file by using the worksheet File.vi reading.

  There are cases of csv files, where there an unwanted comma to the end of the line and an extra cell (with no data) appears in the final report. I was wondering if there is an easy way to remove it (rather than passing through each line and get rid of it).

  Thank you!

  You will need to go through each line, look at the last element and delete it if it is an empty string.  But a loop, it's easy:

  

  Read the spreadsheet, get 2D array of strings.  For each line, download the last element.  Test if she is a Virgin.  If so, remove it from the table.  If this is not the case, switch the blank table.