How constantly write data in a txt file

Similar Questions

• How to write output to a txt file query results

  have a sub query resulting in some records I want to write in a txt file
  
  Select employee a.empcode a, b the address where a.empcode! = b.emp.code

  You can use UTL_FILE to do so, either specifically for your query or more generically as below:

  As user sys:

  CREATE OR REPLACE DIRECTORY TEST_DIR AS '\tmp\myfiles'
  /
  GRANT READ, WRITE ON DIRECTORY TEST_DIR TO myuser
  /
  

  As myuser:

  CREATE OR REPLACE PROCEDURE run_query(p_sql IN VARCHAR2
                                       ,p_dir IN VARCHAR2
                                       ,p_header_file IN VARCHAR2
                                       ,p_data_file IN VARCHAR2 := NULL) IS
    v_finaltxt  VARCHAR2(4000);
    v_v_val     VARCHAR2(4000);
    v_n_val     NUMBER;
    v_d_val     DATE;
    v_ret       NUMBER;
    c           NUMBER;
    d           NUMBER;
    col_cnt     INTEGER;
    f           BOOLEAN;
    rec_tab     DBMS_SQL.DESC_TAB;
    col_num     NUMBER;
    v_fh        UTL_FILE.FILE_TYPE;
    v_samefile  BOOLEAN := (NVL(p_data_file,p_header_file) = p_header_file);
  BEGIN
    c := DBMS_SQL.OPEN_CURSOR;
    DBMS_SQL.PARSE(c, p_sql, DBMS_SQL.NATIVE);
    d := DBMS_SQL.EXECUTE(c);
    DBMS_SQL.DESCRIBE_COLUMNS(c, col_cnt, rec_tab);
    FOR j in 1..col_cnt
    LOOP
      CASE rec_tab(j).col_type
        WHEN 1 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_v_val,2000);
        WHEN 2 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_n_val);
        WHEN 12 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_d_val);
      ELSE
        DBMS_SQL.DEFINE_COLUMN(c,j,v_v_val,2000);
      END CASE;
    END LOOP;
    -- This part outputs the HEADER
    v_fh := UTL_FILE.FOPEN(upper(p_dir),p_header_file,'w',32767);
    FOR j in 1..col_cnt
    LOOP
      v_finaltxt := ltrim(v_finaltxt||','||lower(rec_tab(j).col_name),',');
    END LOOP;
    --  DBMS_OUTPUT.PUT_LINE(v_finaltxt);
    UTL_FILE.PUT_LINE(v_fh, v_finaltxt);
    IF NOT v_samefile THEN
      UTL_FILE.FCLOSE(v_fh);
    END IF;
    --
    -- This part outputs the DATA
    IF NOT v_samefile THEN
      v_fh := UTL_FILE.FOPEN(upper(p_dir),p_data_file,'w',32767);
    END IF;
    LOOP
      v_ret := DBMS_SQL.FETCH_ROWS(c);
      EXIT WHEN v_ret = 0;
      v_finaltxt := NULL;
      FOR j in 1..col_cnt
      LOOP
        CASE rec_tab(j).col_type
          WHEN 1 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_v_val);
                      v_finaltxt := ltrim(v_finaltxt||',"'||v_v_val||'"',',');
          WHEN 2 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_n_val);
                      v_finaltxt := ltrim(v_finaltxt||','||v_n_val,',');
          WHEN 12 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_d_val);
                      v_finaltxt := ltrim(v_finaltxt||','||to_char(v_d_val,'DD/MM/YYYY HH24:MI:SS'),',');
        ELSE
          v_finaltxt := ltrim(v_finaltxt||',"'||v_v_val||'"',',');
        END CASE;
      END LOOP;
    --  DBMS_OUTPUT.PUT_LINE(v_finaltxt);
      UTL_FILE.PUT_LINE(v_fh, v_finaltxt);
    END LOOP;
    UTL_FILE.FCLOSE(v_fh);
    DBMS_SQL.CLOSE_CURSOR(c);
  END;
  

  This allows the header line and the data to write into files separate if necessary.

  for example

  SQL> exec run_query('select * from emp','TEST_DIR','output.txt');
  
  PL/SQL procedure successfully completed.
  

  Output.txt file contains:

  empno,ename,job,mgr,hiredate,sal,comm,deptno
  7369,"SMITH","CLERK",7902,17/12/1980 00:00:00,800,,20
  7499,"ALLEN","SALESMAN",7698,20/02/1981 00:00:00,1600,300,30
  7521,"WARD","SALESMAN",7698,22/02/1981 00:00:00,1250,500,30
  7566,"JONES","MANAGER",7839,02/04/1981 00:00:00,2975,,20
  7654,"MARTIN","SALESMAN",7698,28/09/1981 00:00:00,1250,1400,30
  7698,"BLAKE","MANAGER",7839,01/05/1981 00:00:00,2850,,30
  7782,"CLARK","MANAGER",7839,09/06/1981 00:00:00,2450,,10
  7788,"SCOTT","ANALYST",7566,19/04/1987 00:00:00,3000,,20
  7839,"KING","PRESIDENT",,17/11/1981 00:00:00,5000,,10
  7844,"TURNER","SALESMAN",7698,08/09/1981 00:00:00,1500,0,30
  7876,"ADAMS","CLERK",7788,23/05/1987 00:00:00,1100,,20
  7900,"JAMES","CLERK",7698,03/12/1981 00:00:00,950,,30
  7902,"FORD","ANALYST",7566,03/12/1981 00:00:00,3000,,20
  7934,"MILLER","CLERK",7782,23/01/1982 00:00:00,1300,,10
  

  The procedure allows for the header and the data to separate files if necessary. Just by specifying the file name "header" will put the header and the data in a single file.

  Adapt to the exit of styles and different types of data are needed.

• write data to a txt file

  Hello.

  I use visa and serial Protocol in my vi n want to save the data from MCU in labview to txt file format which, in the data record in each row not each tab.

  I want to just save not given time. Meanwhile, I plot the data in the chart.

  I search in the forum and consider the posts but can't find a solution.

  
  

• How to save data in a txt file.

  Does anyone know why the txt file is empty with no content?

  FILE * f = fopen ("/ shared/documents/save.dat", "w");
  {if(f==null)}
  fprintf (stderr, "Failed to create output. txt\n");
  _exit(2) (1);
  }
  fprintf (f, "Hello World");

  File is created, but the file txt empt without 'Hello World '.

  Ha ha solved.

  fclose (f);

• How to write data from the INI file for the control of the ring

  Hai,

  I need to write the data read from the INI file to a control of the RING. Doing this operation using variants I get the error.

  I will be happy if someone help me. I have attached the file special INI and VI.

  
  

• How to ignore the details of footer when loading data from a .txt file

  Hello experts,
  
  I import data from a txt file in my database. I jumped my header using SKIP information, but how can I ignore my footer details.
  Thank you

  Answer on your other thread:

  Txt for a required format file processing

• How to write data in mode intertwined with TDMS C DLL 2.0?

  Hello

  How to write data in mode intertwined with TDMS C DLL 2.0?

  I use DAQmx features in Visual Studio C++ without Measurment Studio.

  This function returns the data in interlaced mode.

  How can I configure the functions of DLL C TDMS to store this data in the tdms files?

  I see that it is not possible with the PDM version 2.0 with 1.0.

  Thank you

  -TDM C Dll is not able to do

  -TDM header writer may be usable for this but is not able to be used for tdms files.

• Inserting data in a txt file

  Hello world
  I created a form in 6i where I can open a .txt file to show me all the data in this file, so after the display of data in my form, I press a button and I insert data in my database, but if I add new data to this .txt file when I press record it says that certain values are already inserted and they cannot be repeated , because the id is not null, so what I want to ask you is how can I modify the same program to make me insert values that are not already inserted. Only new data.
  This is my code:
  Get_file_contents PROCEDURE IS
  Salida Varchar2 (1000);
  Compañía Varchar2 (5);
  Number of alert: = 0;
  OUT_FILE Text_IO. Type_de_fichier;
  -in_file Text_IO. Type_de_fichier;
  -linebuf Varchar2 (1000);
  
  Function Abre_Archivo
  Return boolean is
  
  BEGIN
  OUT_FILE: = Text_IO. Fopen(:file_name,'r');
  Return (true);
  exception
  While others then
  Return (false);
  END;
  
  BEGIN
  go_block ('MY_BLOCK');
  clear_block (no_validate);
  premier_enregistrement;
  If Abre_Archivo then
  OUT_FILE: = Text_IO. Fopen(:file_name,'r');
  End if;
  -Validation;
  
  LOOP
  Text_IO. Get_Line (OUT_FILE, Salida);
  : MY_BLOCK. SCHOOL_ID: = substr (Salida, 1, instr(Salida,',',1,1)-1);
  : MY_BLOCK. CLASS_ID: is substr (Salida, instr(Salida,',',1,1) + 1, (instr(Salida,',',1,2)-instr(Salida,',',1,1))-1);.
  : MY_BLOCK. Class_name: = substr (Salida, instr(Salida,',',1,2) + 1);
  : MY_BLOCK. STATUS: = 'A ';
  
  next_record;
  Synchronize;
  END LOOP;
  
  Text_IO. Fclose (OUT_FILE);
  premier_enregistrement;
  Exception when No_Data_Found then
  delete_record;
  Text_IO. Fclose (OUT_FILE);
  premier_enregistrement;
  END;

  OK, the constraint is the id of class only. So adjust the WHERE condition so that it only checks the class id.

• How about the text of the .txt file output?

  This is my code:

  #include "iostream.h".

  #include 'fstream.h.

  ofstream myfile;

  MyFile.Open ("C:\test.txt");

  MyFile < < 'text ';

  MyFile.Close ();

  But it occurs the error C1083: cannot open include file: 'iostream.h': no such file or directory.

  How about the text of the .txt file output?

  I would suggest that you do in the InDesign style to match...

  InterfacePtr stream (StreamUtil::CreateFileStreamWrite (...);

  if(Stream->GetStreamState() == kStreamStateGood) {}

  flow-> XferByte (buf, size);

  flow-> Flush();

  }

  flow-> Close();

  There are lazy as CreateFileStreamWriteLazy equivalent methods.

  Deferred methods will open the file in the application, but you will always get a valid pointer.

  See docs on its use.

• DASYLab how to write data to a file every 15 minutes

  Hi all

  I use dasylab and datashuttle/3000 to record data. What I want to do is to write data to a file every 15 minutes. I use the milti-file, which can write data to the file diffenret, but how do I control the timing, as the journal data every 15 minutes automatically.

  The other problem is that I use FFT analysis of the frequency spectrum. How can I determine the value of frequency where the peaks that happens.

  Thank you

  Write less data in the file that you have collected requires the reduction of certain data.

  There are three techniques to consider.

  With an average or an average of block - both reduce the data by using a function of averaging, defined in the module. To accomplish the reduction of data, choose block or RHM mode in the dialog box properties, and then enter the number of samples/data values that you want to reach on average.

  Average - when you reduce the data, you also should reblock data using the block length of the change in the output parameter. For example if you enjoy at 100 samples/second with a block size of 64, the average module configured on average, more than 10 samples will take 10 times longer to fill a block. The initial block represent 0.64 seconds, the output block represent 6.4 seconds at a sampling rate of 10 samples/second. If you change the size of output in one block, the program remains sensitive.

  Average block - average values in a block against each subsequent block, where the average is based position. The first samples are averaged, all second samples are average... etc. The output is a block of data, where each position has been averaged over the previous blocks. This is how you will be an average data FFT or histogram, for example, because the x-axis has been transformed in Hz or bins.

  Second technique - separate module. This allows to reduce the data and the effective sampling rate jumping blocks or samples. For example, to reduce the data in 1000 samples / second to 100 samples per second, configure the module to keep a sample, jumping 9, keep one, jumping 9, etc. If you configure to skip blocks, you will not reduce the sampling frequency, but will reduce the overall amount of data in a single block 9, for example. It is appropriate for the FFT data or histogram, for example, to have the context of the correct data.

  Finally, you can use a relay and a synchronization module module to control. For example, to reduce a sample data every 15 seconds, configure a generator module of TTL pulses for a cycle of 15 seconds of time. Connect it to a Combi trigger module and configure it to trigger on rising and stop the outbreak directly, with a trigger value after 1. The trigger output connects to the X of the relay command input.

  In addition to these techniques, you can change the third technique to allow a variable duration using a combination of other modules.

  Many of these techniques are covered in the help-tutorial-Quickstart, as the data reduction is one of the most frequently asked questions.

  In regards to the FFT... use the module of statistical values in order to obtain the Maximum and the Max Position. The Position of Max will be the value of the frequency associated with the Maximum value. The output of the statistics module is a single sample per block. Look at the different FFT sample installed in the worksheet calculation/examples folder.

• Pulse TTL-PCI-6503 write in a log .txt file

  Hello, I need to connect the PCI-6503 data output to a log .txt file. This PCI-6503 map reads a pulse sent from another PCI-6503 located in another computer. I want to just save the .txt file if a pulse is received. I know how to create and write to the .txt file, but do not know how to write the DAQmx data in this file. Could someone help?

  Thank you in advance!

  Hi a2h,.

  To only write when there is data emerging from the Daqmx read, you can use the table Emply?. VI to determine if there are real (like the pulse) from the unit and then data of yarn that a structure of case that will write to a text file in the case of false.

  Peter W.

• How to write data in an Excel spreadsheet protected (with unlocked cells)?

  Hello!

  I have LabVIEW 8.2 and I often use the report Generation Toolkit for Microsoft Office' to save data in Excel spreadsheets. So far, I only used the leaves unprotected.

  But right now, I have an Excel worksheet protected by some cells unlocked. If I open the file using Excel I can fill these unlocked cells without any problem. However, I am not being able to fill these cells unlocked using LabVIEW and the Toolbox. I have a few questions:

  (1) is it possible to use LabVIEW to write data in a protected Excel worksheet, even though she has unlocked the cells?

  (2) if it is possible, how can I do that?

  OBS: I noticed that if I unprotect the sheet, I can write data to the file. But I don't want to be protected and the protection of the sheet, since users will not have the password.

  I hope that I was clear. I really appreciate any help you can provide.

  Thanks for the replies.

  Use ActiveX I could write the cells individually. By doing this, I could write in the unprotected cells without any problem. hour

  Probably, the Toolbox has been activated somehow the overall protection of the spreadsheet and Excel was not allowing writing.

  I had never used before ActiveX, so I had to learn it from scratch. I was looking for some tutorials on the internet but I have not found much information easy. What struck me the most help is an example that comes with LabVIEW named "Excel - write Table.vi. After some tests, I was able to open my data protected from the worksheet and fill in the unlocked cells.

  Thank you guys!

• Problem with registration of data in the txt file

  Hello

  I have 2009 Labview, Labview real-time 2009 and cRIO 3.3.0. I also NEITHER cRIO-9024 more cRIO-9112 chassis and modules.

  I would like to save the data measured modules in the txt files, but I want to do in a period of time to time desire. For example, I want to save data of measurements of 60 seconds and repeat every one hour. I of the project (in the file attachment vi) and normally it works fine but I noticed that the recording of the data is not correct. I mean it seams to save what was in the memory before. That's the problem with Windows XP I have check with another computer with Vista and it seems to be ok. It seems that on XP the buffer (refnum?)  is not clear and it retains the previous values.

  Can someone explain to me why it happened and how I can obey Windows XP? Or maybe there are techniques to clear the memory buffer/refnum for rescue?

  Thanks for any help.

  Kind regards

  Kamil

  
  

• How to save data in the text file of Spartan 3

  Hi all

  I would like to kindly save the data table text file or a spreadsheet on vi using fpga spartan 3e as an fpga target. Once I added all the functions related to the operation of file, it gave an error that these functions are not supported by the target device.

  could you please help me with this

  Thank you

  Rania

  Hi David,

  Thank you for posting. You use LabVIEW? If so, what version of LabVIEW FPGA do you use? You use a host VI, or any deployment of code at your target to run? The file IO VI probably won't compile to target because they are not intended to be used on your host computer. Resources and the paths of files do not exist on the target FPGA, but rather on the side of the host. I have included a link below that describes how to transfer data between the FPGA and host. I hope this helps!

  http://zone.NI.com/reference/en-XX/help/371599F-01/lvfpgaconcepts/pfi_data_transfer/

• Record a continuous flow of data in a txt file?

  Hello world! I'm relatively new to the ICB and I was wondering if I could get help on something. I'm trying to modify a sample file that reads permanently a tension from a daq card. I would like to save this data in a text file, but I am relatively new to the C programming language (I'm a java person) and cannot distinguish the location data. Once I know where the data is, I think that I can write the data using a sort of loop and the fprintf function. Any help would be greatly appreciated. This is the code for the method StartCallBack of the "Cont Acq - Int Clk" file that I use:

  int CVICALLBACK StartCallback(int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
  {
  Int32 error = 0;
  Chan Char [256];
  uInt32 sampsPerChan;
  float64 min, max, rate;
  The int journal;
  char errBuff [2048] = {'\0'};

  If (event == EVENT_COMMIT) {}
  GetCtrlVal (panel, PANEL_CHANNEL, chan);
  GetCtrlVal (Panel, PANEL_MINVAL, &min);)
  GetCtrlVal (Panel, PANEL_MAXVAL, &max);)
  GetCtrlVal (Panel, PANEL_RATE, &rate);)
  GetCtrlVal (panel, PANEL_SAMPSPERCHAN, & sampsPerChan);
  SetCtrlAttribute (panel, PANEL_STRIPCHART, ATTR_XAXIS_GAIN, 1.0/rate);
  Journal = (int) log10 (rate);
  SetCtrlAttribute (panel, PANEL_STRIPCHART, ATTR_XPRECISION, log);
  SetCtrlAttribute (panel, PANEL_STRIPCHART, ATTR_POINTS_PER_SCREEN, sampsPerChan);

  /*********************************************/
  DAQmx Configure Code
  /*********************************************/
  SetWaitCursor (1);
  DAQmxErrChk (DAQmxCreateTask("",&gTaskHandle));
  DAQmxErrChk (DAQmxCreateAIVoltageChan(gTaskHandle,chan,"",DAQmx_Val_Cfg_Default,min,max,DAQmx_Val_Volts,));
  DAQmxErrChk (DAQmxCfgSampClkTiming (gTaskHandle",", rate, DAQmx_Val_Rising, DAQmx_Val_ContSamps, sampsPerChan));
  DAQmxErrChk (DAQmxGetTaskAttribute (gTaskHandle, DAQmx_Task_NumChans, & gNumChannels));

  If ((gData =(float64*) malloc (sampsPerChan * gNumChannels * sizeof (float64))) == NULL) {}
  MessagePopup ("error", "not enough memory");
  GoTo error;
  }

  DAQmxErrChk (DAQmxRegisterEveryNSamplesEvent(gTaskHandle,DAQmx_Val_Acquired_Into_Buffer,sampsPerChan,0,EveryNCallback,));
  DAQmxErrChk (DAQmxRegisterDoneEvent(gTaskHandle,0,DoneCallback,));

  /*********************************************/
  Starting code DAQmx
  /*********************************************/
  DAQmxErrChk (DAQmxStartTask (gTaskHandle));

  SetCtrlAttribute (panel, PANEL_STRIPCHART, ATTR_NUM_TRACES, gNumChannels);
  SetCtrlAttribute(panel,PANEL_START,ATTR_DIMMED,1);
  }

  Error:
  SetWaitCursor (0);
  If {(DAQmxFailed (error))
  DAQmxGetExtendedErrorInfo (errBuff, 2048);
  If (gTaskHandle! = 0) {}
  /*********************************************/
  Stop DAQmx code
  /*********************************************/
  DAQmxStopTask (gTaskHandle);
  DAQmxClearTask (gTaskHandle);
  gTaskHandle = 0;
  If (gData) {}
  Free (gData);
  gData = NULL;
  }
  SetCtrlAttribute(panel,PANEL_START,ATTR_DIMMED,0);
  }
  MessagePopup ("DAQmx Error", errBuff);
  }
  return 0;
  }

  Hello supercharizard,

  It comes to the appropriate line in the code that you posted that can lead you to "where the data is.

  DAQmxErrChk (DAQmxRegisterEveryNSamplesEvent(gTaskHandle,DAQmx_Val_Acquired_Into_Buffer,sampsPerChan,0,EveryNCallback,NULL));
  

  DAQmxRegisterEveryNSamplesEvent function establishes a callback as a routine function that will be called when at least a predefined amount of data is acquired. The part highlighted in the line is the reminder issued on this event, that you can study and modify the data adding streaming.

  This knowledge base entry gives a brief explanation of the events available. There are many other resources on DAQmx works as well in Help and online on this site that you should carefully study to better understand data acquisition.

  Regarding the release, there are several ways to do: here are two examples that produce a binary file (more fast, but you will need to write code to read data back) or add it to an ASCII file aligned in columns (slower but readable with a text editor, which is no code needed to read the data back). Another alternative is to make use of TDM stream on the disk library: this last resource is notably more complicated then I suggest you approach after some more practice on the fundamentals.