UTL_FILE text file writing

Similar Questions

• Need help: UTL_FILE read and write in the text file

  Hello, I'm on version 11 GR 2 by using the UTL_FILE function to read a text file and then write the lines where it starts with the word "foo" and put an end to my writing in the text file where the line with the word "ZEN". Now I have several lines that begin with 'foo' and 'ZEN' allow a paragraph, and in this paragraph, there is a line that begins with "DE4.2". Therefore,.
  I need to write all of the paragraphs that include the "DE4.2" line in their beginning and end of lines 'foo' and 'ZEN '.
  
  FOR EXAMPLE:
  
  FOO/234E53LLID
  IT'S MY SECOND LINE
  IT'S MY THIRD LINE
  DE4.2 IT OF MY FOURTH LINE
  IT'S MY FIFTH LINE
  ZEN/DING3434343
  
  FOO/234E53LLID
  IT'S MY SECOND LINE
  IT'S MY THIRD LINE
  IT'S MY FIFTH LINE
  ZEN/DING3434343
  
  I'm only interested in writing the first paragraph tha includes line DE4.2 in one of the paragraph of lines not the second ther that does not include the "DE4.2".
  
  Here is my code so far:
  
  CREATE OR REPLACE PROCEDURE my_app2 IS
  Utl_file.file_type INFILE;
  outfile utl_file.file_type;
  buffer VARCHAR2 (30000);
  b_paragraph_started BOOLEAN: = FALSE; -flag to indicate which required paragraph is started
  
  BEGIN
  -Open a file to read
  INFILE: = utl_file.fopen ('TEST_DIR', 'mytst.txt', 'r');
  -Opens a file for writing
  outfile: = utl_file.fopen ('TEST_DIR', "Out.txt", "w");
  
  -Check the file is open
  IF utl_file.is_open (infile)
  THEN
  -lines in the file in loop
  LOOP
  BEGIN
  UTL_FILE.get_line (infile, buffer);
  APPLICATION STARTING POINT-
  Buffer IF LIKE 'foo %' THEN
  b_paragraph_started: = TRUE;
  END IF;
  -SEARCH FOR GRADS APPS
  IF b_paragraph_started AND buffering LIKE '% 4% ' THEN
  UTL_FILE.put_line (outfile, buffer, FALSE);
  END IF;
  -REQUEST FOR ENDPOINT
  Buffer IF LIKE '% ZEN' THEN
  b_paragraph_started: = FALSE;
  END IF;
  UTL_FILE.fflush (outfile);
  
  EXCEPTION
  WHEN no_data_found THEN
  EXIT;
  END;
  END LOOP;
  END IF;
  UTL_FILE.fclose (INFILE);
  UTL_FILE.fclose (outfile);
  EXCEPTION
  WHILE OTHERS THEN
  raise_application_error ("-20099, ' UTL_FILE unknown error");
  END my_app2;
  /
  
  When I run this code I get only one line: DE4.2 it ME LACK THE WHOLE PARAGRAPH
  
  PLEASE ADVISE...

  I agree with reservations of Justin on the length of a "paragraph" and the number of users that are running at the same time, so here is a version without the collections.

  CREATE or replace PROCEDURE my_app2 IS
     infile utl_file.file_type;
     outfile utl_file.file_type;
     buffer VARCHAR2(30000);
     b_paragraph_started BOOLEAN := FALSE; -- flag to indicate that required paragraph is started
     b_toprint BOOLEAN := FALSE;
     l_para_start pls_integer;  -- start of "paragraph"
  BEGIN
     infile := utl_file.fopen('TEST_DIR', 'mytst.txt', 'r');
     outfile := utl_file.fopen('TEST_DIR', 'out.txt', 'w');
     LOOP
        BEGIN
           utl_file.get_line(infile, buffer);
           IF buffer LIKE 'FOO%' THEN
              b_paragraph_started := TRUE;
              l_para_start := UTL_FILE.FGETPOS(infile) - (length(buffer) + 1);
           END IF;
           IF b_paragraph_started and buffer like '%DE4%' THEN
              b_toprint := TRUE;
           END IF;
           If buffer like 'ZEN%' THEN
              IF b_toprint THEN
                 UTL_FILE.FSEEK(infile, l_para_start);
                 utl_file.get_line(infile, buffer);
                 while buffer not like 'ZEN%' loop
                    utl_file.put_line(outfile,buffer, FALSE);
                    utl_file.get_line(infile, buffer);
                 end loop;
                 utl_file.put_line(outfile,buffer, FALSE);
              end if;
              b_paragraph_started := FALSE;
              b_toprint := false;
              utl_file.fflush(outfile);
           end if;
        EXCEPTION
           WHEN no_data_found THEN
              EXIT;
           END;
     END LOOP;
     utl_file.fclose(infile);
     utl_file.fclose(outfile);
  END my_app2;
  

  Test:

  SQL> !cat mytst.txt
  FOO/234E53LLID
  THIS IS MY SECOND LINE
  THIS IS MY THIRD LINE
  DE4.2 THIS IS MY FOURTH LINE
  THIS IS MY FIFTH LINE
  ZEN/DING3434343
  
  FOO/234E53LLID
  THIS IS MY SECOND LINE
  THIS IS MY THIRD LINE
  THIS IS MY FIFTH LINE
  ZEN/DING3434343
  
  FOO/234E53LLID again
  THIS IS MY second SECOND LINE
  THIS IS MY second THIRD LINE
  DE4.2 THIS IS MY second FOURTH LINE
  THIS IS MY second FIFTH LINE
  ZEN/DING3434343 again
  
  SQL> exec my_app2;
  
  PL/SQL procedure successfully completed.
  
  SQL> !cat out.txt
  FOO/234E53LLID
  THIS IS MY SECOND LINE
  THIS IS MY THIRD LINE
  DE4.2 THIS IS MY FOURTH LINE
  THIS IS MY FIFTH LINE
  ZEN/DING3434343
  FOO/234E53LLID again
  THIS IS MY second SECOND LINE
  THIS IS MY second THIRD LINE
  DE4.2 THIS IS MY second FOURTH LINE
  THIS IS MY second FIFTH LINE
  ZEN/DING3434343 again
  

  You may need to change the length (buffer) + 1 depending on your platform and if you want a blank line s NLE out paragraphs, add another call to put_line after that outside of the loop in the fi l_toprint block.

  John

• Writing data in the text file or excel spreadsheet

  Hello

  I have a silly question to ask questions about the writing of data in a text file or a spreadsheet. I have an example that simulates a sine-swept DAQmx. The output it provides is the (amplitude and phase) frequency response function that is plotted on a graph (see VI) attached. I like to use these data for further analysis by transmitting the data to a text file or a spreadsheet. I've tried a few things, but the thread is broken. I guess I use the sink badly - so I was wondering, can you please advise me on what sink should I use?

  Your help would be very appreciated,

  Thank you very much

  REDA

  The wire is broken, because you cannot connect this type of data to one of these two functions. The data source type is a table 1 d of the clusters, where each cluster contains two tables. The text file write accepts strings, not clusters. Writing on a file action accepts dynamic data, and while you can convert dynamic data tables, there is no built-in mechanism to convert a table 1 d of the clusters of two matrices.

  What you need to do is to convert the data in a format which can be accepted by these functions. Since you want to have a "spreadsheet" file then you should use writing to the spreadsheet file that creates a delimited text file. Since the frequency data would be the same for the plot of the magnitude and phase diagrams, you can have 3 columns: frequency, amplitude, and phase. You can take off the items using Unbundle by name, and then create a table 2D of each element of the cluster. The real question is to know if you want to save the data at each iteration and if you simply add on the file. The attached figure shows write an initial header and then adding just streaming the data.

• Error 1 has occurred to writing to text file

  Hey there!

  I tried to write a VI that takes some steps to some specific period of time and then save it in a text file. But I get an error indicating that the input parameter is not valid in writing to a text file. This always happens in the second round of the loop. I've attached screenshots.

  Thanks in advance.

  You close the file at the end of the loop and you never open it again.  Move the close file outside of the loop (after him).

• Control of the authorization of sharing when writing to a text file

  I have several application that writes a file of text defined in a file share.  Another application, not a LabVIEW application then reads the delimited text file.  When my application is creating or writing to the file text delimited, is there a way to manipulate the permissions so that no other application can read the file at the same time, I am writing to you in the file?  I can do this in Visual Basic through the FileShare (http://msdn.microsoft.com/en-us/library/system.io.fileshare(v=vs.110).aspx) option during the creation of filestream, but I don't see this option in LabVIEW.  Thank you.

  Too bad.  I believe that this is possible thanks to the function of "deny access".

• Continous writing in the external text file

  I'm trying to build a VI in labVIEW that will supply a decimal value based on a binary file to enter a box structure. The structure of the case will display a string value according to the decimal places of entry. The problem that I wrote the string value to a text file that will continue to write while the Vi is constantly running.

  Here are a few suggestions (you'll learn a lot more if you try to do this yourself, instead of my giving you a 'solution').

  • You have 8 Boolean commands.  Consider making a table (size 8) Boolean controls (among other things, it does help group them for you).
  • If you look at the range of Booleans, you will see a function of "array of numbers.  Guess what that so "feed you" an array of Boolean 8...  You can eliminate a lot of code by doing this.
  • Your numbers are all integers, so it is not sensible to save as a double.
  • You have a configured here While loop.  What you think about quick check how it works?  Do you care?  Do you want to it is running "as fast as possible?  Do you want it to run at a fixed speed (for example, a loop per second)?  Do you want it runs 'when something happens?
  • Good thing you have done, is recognize that the task of recording has three parts - Open (performed only once), Write (done as often as necessary) and closed (performed only once).  You also correctly positioned the relevant functions before, inside and after the while loop.  I'm not 100% certain it's important in this particular case, but usually when we done that and has a While loop, running on the same "variable" on several occasions, the wire is put in a shift instead of a pair of tunnels register.  Even if it is not necessary here, it would be a good change to make, because it will be necessary in other cases.

  I did not actually run your code, but do not see something terribly wrong with it.  Try to make the changes I suggested (which will allow you to significantly reduce the size of your VI).  Special attention to the question of the 'speed '.  If you republish your "improved" VI (and thanks for posting it), you could describe a little better "the problem I have" - what do I do, or what he does not?

  Bob Schor

• Writing a single line of numbers in a text file or write several lines each iteration?

  Hello

  I am currently working on an application that has a few different time-loops at the same time. A single loop acquires data (DAQloop), another shows the data (raw and processed data) on graphs (Graphsloop) and another stores data in an open (Storageloop) ascii text file.

  The data is passed to the DAQloop to the Storageloop through a queue. Now, I leave the Storageloop take the first element of the queue (oldest) to store in the text file each iteration. However, I was wondering if it would be better to let the Storageloop take all items currently available in the queue store at once.

  Does anyone have ideas on this? Who better its? The text file is already open and is simply passed as a refnum.

  THX!

  With normal file primitives LabVIEW, you will get your best speed of disc when you write about 65 000 bytes of disk at once (or read, incidentally).  When I write a similar code, I included a string buffer in the loop of Scripture.  Whenever I get data to write, I add it to the chain.  When the chain hits 65 000 bytes, I write to disk.  You could break this into three loops, as well - a read buffer, and write.  Depending on the current size of piece, you could see a change in the order of magnitude of the speed of disk write.  This write operation is often limited by the conversion from binary to ASCII, not the disk i/o.  If you do this, be careful with your buffer.  You can get some serious slowdowns depending on how you implement it.  This post has some details and examples.

• Error code 1 when writing to text file

  I have an error code 1 when I try to write to a text file in my application. Really, I don't understand and don't know how to solve this problem.

  If anyone can help me please fix this, it would be greatly appreciated!

  Do not close the file in the box 0.  It closes only after your while loop ends.  Keep your refnum file stored in a shift register.

  My guess is that you open the file outside the while loop and you pass in the refnum and use it in the box 0.  Then you close the file that kills the refnum.  Then, you open the file again (possibly automatically with read) then close that.  When you get to the enclosure 1, you use the same refnum you originally opened up to the outside, but that was closed and is now invalid.

• [Beginner] LabVIEW 2010: Vi 'Writing on a text file' overwrite an existing file rather than add new data

  Hello

  I want to write data to a text file. Don't ask me why, I have to use the vi 'Write in the text file' and not 'write in a measurement file. Everyone do in my office.

  The point is that when I use the vi, the file is always overwritten, if I want to add data in the same file. See attachment for a view of my program. Obviouly, I'm trying to find an option in the property, but no... I sent the vi outside the lopp, but it does not work

  Oddly, it works very well with Labview 2009 but not Labview 2010

  Someone has an idea?

  Thank you for all

  See exhibit attached - open the file, move it to the end, write the text, close the file.

  You can also write at the beginning of the file, or to jobs in the middle.

  Ian

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  echo "php file works;

  ? >

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  var outLV = new LoadVars();

  var inLV = new LoadVars();

  sendData() {} function

  outLV.hsdata = 'Hello from Flash';

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  If (success) {}

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  } else {}

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  }

  };

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  <>

  $mytxt = $_POST ['hsdata'];

  $myfile = "test23.txt";

  $fh = fopen ($myfile, 'w');

  Adds data to the file

  fwrite ($fh, $mytxt);

  closes the file

  fclose ($fh);

  $mess = "Hello there php ';

  echo "phpmess =". "." $mess;

  ?>

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  Hello

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  Try to use the function "set position in the file" (file e/s palette, advanced functions) before writing the data.

  either open the file, position set to finish, write the data, close the file.

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• text file as config

  Hello world

  Once again I have some difficulty.

  I'm trying to control Goepel Cascon with my labview. What I basically want to achieve is:

  I want a configuration file that contains a part of the serial number of my share a name. The serial number is parsed as a string of alphanumeric one limited to the first 10 characters. Now, I want to find the line in the text file that this shorter string is also written in as the name that is separated by a tab number is supposed to be read by labview and transmitted.

  All this is necessary for my final program when the apllication is generated can be updated just by writing new things in a text file.

  Thanks for help.

  Michael

  It would be useful that you can attach the text file. Basically for your scenario, you can read the text file in a table 2D-string with 'Tab' as delimiter and find the serial number and the name of the party. Come back if you face any problem.

• Convert data from text file to display for hex UDP transmission controls

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  I'm reading packets ethernet from a text file containing the actual hex data packets to then send these accurate return through a writing UDP hex data. I can't understand how to feed data into the function of writing UDP as real rather than characters ASCII hex data, as it does by default. I had the screen on the last VI before the writing of the UDP to "hexadecimal display mode" and if I manually type the hexadecimal values in the VI (hexadecimal string to binary String.vi - attached), then it passes the commands correctly. However,... when I fed the string of text in my text file data in this VI, it seems to be the substitution of this hexadecimal display on the VI input mode and the resulting entry in my UDP is still ASCII character mode. I tried to use a cast inside this VI, type... but that doesn't seem to work right. I have attached the main VI and VI which tries to prepare data before reading the UDP protocol. I've also attached an example of text file of data that I am an attempt of analysis.

  Any help would be appreciated,

  Thank you

  Hi jsrocket,

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• How to write graph of waveform data to text file with the option to the user to do

  So, I'm new to labview and will have bad to write a program in particular.  I have a waveform graph that runs for 120 seconds, generating a sine curve.  I am, however, having a time difficult get the program to write the x and are coordinated in a text file.  I've attached what I have so far.

  The first task I was assigned was to write a program that creates a curve of snusoidal on the front panel by adding a data point every half second for 120 seconds.  The plot should starts only if the user presses a button to start.

  The next part is to give the user an option to write the data generated in a file of worksheet called 'sine.txt '.  The file name and location should be hard-coded.  The file must contain the x and there contact information of each data point in columns separated by tabs, also known as the delimited.

  I spent several hours refining the attached program, and I can't seem to make it work right.  Any suggestions would be helpful at this stage.

  Sincerely,

  A student of chemistry frustrated whose research mentor is out of town

  First, you create files Excel.  You create text files.  And it seems that your writing on a file already created X (time) vs Y (curve of data) that is delimited by tabs.

  All you do is simply too complicated or a Rube Goldberg.

  All you need is the joint.