Retrieve data from a text file, incrementing the last value and save new value below

Hi
This was working initially. It is part of my LabView Project. I was trying to create a unique number that increments every time the adds the value to the list. It works on computer perfectly. But when I put this on a PDA, it seems to create a blank space when reading the contents of the text file after the last value, which means 0 + 1, which is not what I want.
Please run the testUniqueNoOnPDA.vi first and change the path to C:\uniqueNumber.txt and save the uniqueNumber.txt file to your C drive and see What I am trying to do. Click the Enter button to increment.
Why does the PDA create a blank space after the last value and a computer does not?
I was working perfectly all week and it is not working well now.
Help please, I think I'm missing something
Attachments:
uniqueNumber.txt ‏1 KB
testUniqueNoOnPDA.vi ‏33 KB
testUniqueNoOnPDA.lvproj ‏4 KB

It works perfectly, it was a hardware problem. It depends on what PDA I used.

Similar Messages

How can I plott data from a text file in the same way as a media player using the pointer slide to go back and fort in my file?

I would like to plott data from a text file in the same way as a media player does from a video file. I’m not sure how to create the pointer slide function. The vi could look something like the attached jpg.
Please, can some one help me?
Martin
Attachments:
Plotting from a text file like a media player example.jpg ‏61 KB

HI Martin,
i am not realy sure what you want!?!?
i think you want to display only a part of the values you read from XYZ
so what you can do:
write all the values in an array.
the size of the array is the max. value of the slide bar
now you can select a part of the array (e.g. values from 100 to 200) and display this with a graph
the other option is to use the history function of the graphes
regards
timo

Retrieve data from a text file and insert in table

hi,
i am writing an application which when executes would creates a user table and populates it with the data i.e. username and passwords taking it from a text file.
i would like to know if anybody can help as to how can i retreive the user name and password for every insert statement that will be fired to populate the user table.
thanks in advance for the help

for csv try a little search:
http://search.java.sun.com/Search/java?col=javafrm&qp=%2Bforum%3A31&qt=csv+import
search for ini files:
http://search.java.sun.com/Search/java?qt=ini+file&col=javafrm&rf=0&qp=%2Bforum%3A31
hope this helps
tobias

Reading data from a text file to the MIDP RMS.

Sorry if this is a bit 2 newbie...
What I want to do is read a data file(ie csv), from windows and write the data into the record store.
My main idea is to store the recordstore files on windows and updated them from the text windows files and autosync the recordstores between windows and my palm...
Is this possible? If so is it a crappy way to do it... would there be a better way

Hi Stephen:
Bundle the readme.txt, CSV file etc. with the jar that contains your MIDlet. Pretty clever way to initialize a datastore.
public void startApp() throws MIDletStateChangeException
// retrieve the contents of a resource file
System.out.println("Retrieving the resource file - readme.txt");
System.out.println("--------------------------------------------");
InputStream is = this.getClass().getResourceAsStream("readme.txt");
try {
if ( is != null ) {
int ch;
while ( (ch = is.read()) != -1) {
// print out the contents of the readme file
System.out.print((char) ch);
// or move the char in a byte array for the datastore
// I know you get the picture
is.close();
} catch (IOException e) {
System.out.println(e);
}

How to load Test data from a Text file in ECATT

Hi,
I have created a test configuration with a test script, system data container, and test data container.
I have done the recording of a transaction and created the script. Parameterization is done for the script and have imported those parameters from script in to the data container.
I am trying to load a the data from a text file on the local work-station. The data is not being read.
Please explain this in detail (step by step) as I am very new to ECATT.
I am trying this on SAP ECC 6.0 IDES server.
Thanks in Advance
Vikas Patil

Please explain this in detail (step by step) as I am very new to ECATT.
Thanks in Advance
Vikas Patil

Hi i am new to labview. i want to extract data from a text file and display it on the front panel. how do i proceed??

Hi i am new to labview
I want to extract data from a text file and display it on the front panel.
How do i proceed??
I have attached a file for your brief idea...
Attachments:
extract.jpg ‏3797 KB

RoopeshV wrote:
Hi,
The below code shows how to read from txt file and display in the perticular fields.
Why have you used waveform?
Regards,
Roopesh
There are so many things wrong with this VI, I'm not even sure where to start.
Hard-coding paths that point to your user folder on the block diagram. What if somebody else tries to run it? They'll get an error. What if somebody tries to run this on Windows 7? They'll get an error. What if somebody tries to run this on a Mac or Linux? They'll get an error.
Not using Read From Spreadsheet File.
Use of local variables to populate an array.
Cannot insert values into an empty array.
What if there's a line missing from the text file? Now your data will not line up. Your case structure does handle this.
Also, how does this answer the poster's question?

Error while loading data from a text file to a datastore

Hi all,
i am a starter in ODI. I am trying to load data from a text file into a datastore. I have put the file on a unix server whose location is defined in the topology manager. when i am trying to "view data" it is giving me error file does not exist at <location where i have put the file>. Please help me

Hi,
1. If your files are on a remote File System, you will need to copy one of your files to the machine ODI Designer is running on to allow ODI to retrieve the metadata information of the file.
2. In Topology create a Physical Schema, the directory you enter for Data and Work Schema should point at this local file.
3. Then define the File Datastore in ODI Designer. Enter a name, browse and select the file and fill in each filed of the Files tab.
* If its a Fixed file, click on the grid icon on the Columns tab to enter the columns and have Automatic Adjustment checked.
* If its a Delimited file, use the Reverse button on the Columns tab to reverse the columns.
* Right click on the File Datastore select View Data, if you can view data, that means the File Datastore has been defined correctly.
* If not, check each tab of the File Datastore to make sure everything is defined correctly and retry.
4. Once View Data is successful, you now change the directories (Data and Work Schema in Topology) to point at the remote File System. These directories must be accessible to the ODI Agent that will be used to run the transformations. The directory can be an absolute path (m:/public/data/files) or relative to the ODI Agent startup directory (../demo/files). It is strongly advised to use a UNC (independent from the execution location) for the path. When running the transformations with "no agent", the directory is relative to the directory where Oracle Data Integrator has been installed.
You need to have a agent process running at the system where your source file resides .
Then while running the odi interface choose that agent .
Thanks,
Sutirtha

How do you read data from a text file into a JTextArea?

I'm working on a blogging program and I need to add data from a text file named messages.txt into a JTextArea named messages. How do I go about doing this?

Student_Coder wrote:
1) Read the file messages.txt into a String
2) Initialize messages with the String as the textSwing text components are designed to use Unix-style linefeeds (\n) as line separators. If the text file happens to use a different style, like DOS's carriage-return+linefeed (\r\n), it needs to be converted. The read() method does that, and it saves the info about the line separator style in the Document so the write() method can re-convert it.
lethalwire wrote:
They have 2 different ways of importing documents in this link:
http://java.sun.com/docs/books/tutorial/uiswing/components/editorpane.html
Neither of those methods applies to JTextAreas.

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

Read data from a text file, one line at a time.

I need to read data from a text file, and display each line in a String Indicator on Front Panel. It displays each line, but I get Error 4, End Of Line, unless I enter an extra line of data in the file that I don't need. I tried Read From Text File.vi, made by Nat Instr, and it gave the same error.

The Read from Text File.vi reads data from a text file line by line until the user stops the VI manually with the Stop button on the front panel, or until an error (such as "Error 4, End of file") occurs. If an error occurs, the Simple Error Handler.vi pops up a dialog that tells you which error occurred.
The Read from Text File.vi uses a while loop, but if you knew how many lines you wanted to read, you could replace the while loop with a for loop set to read that many lines from the file.
If you need something more dynamic because the number of lines in your files vary, then you could change the code of the Read from Text File.vi to the expect "Error 4, End of file" and handle it appropriately. This would require unbundling the error cluster that comes fro
m the Read File function with the Unbundle By Name function, so that you can expose the individual error "status" and error "code" values stored in the cluster. If the value of the error "code" is 4, then you can change the error "status" from true to false, and you can rebundle the cluster with the Bundle by Name function. Setting the error "status" to false instructs the Simple Error Handler to ignore the error. Otherwise, pass the original error cluster to the Simple Error Handler.vi, so that you can see what the error is.
Of course, if you're not interested in what the errors are, you could just remove the Simple Error Handler.vi, but then you wouldn't see any error messages.
Best of Luck,
Dieter
Dieter Schweiss
Applications Engineer
National Instruments

How to read a tab seperated data from a text file using utl_file

Hi,
How to read a tab seperated data from a text file using utl_file...
I know if we use UTL_FILE.get_line we can read the whole line...but i need to read the tab separated value separately.....
Thanks in advance...
Naveen

Naveen Nishad wrote:
How to read a tab seperated data from a text file using utl_file...
I know if we use UTL_FILE.get_line we can read the whole line...but i need to read the tab separated value separately.....If it's a text file then UTL_FILE will only allow you to read it a line at a time. It is then up to you to split that string up (search for split string on this forum for methods) into it's individual components.
If the text file contains a standard structure on each line, i.e. it is a fixed delimited structure, then you could use external tables to read the data instead.

Need to read data from a text file

I need to read data from a text file and create my own hash table out of it. I'm not allowed to use the built in Java class, so how would I go implementing my own reading method and hash table class?

It's not possible to read from a file without using classes from the core API*. You'll have to get clarification from your instructor as to which classes are and are not allowed.
[http://java.sun.com/docs/books/tutorial/essential/io/]
*Unless you write a bunch of JNI code to replicate what the java.io classes are doing.

Average Data from multiple text files

I am new to labVIEW hence a little help is appreciated:
I have a 100 txt files with two columns (tab separated) for X and Y value.
I need to average the Y values to generate one single txt file and generate X versus Y graph.
So how do I read the data from these text files? (without having to select each one of them individually) and how to average the data and create a XY graph from it?
Thanks in advance
Solved!
Go to Solution.

Use X-Y Graph.
You were able to get two arrays of X and Y points from text file right?
Gaurav k
CLD Certified !!!!!
Do not forget to Mark solution and to give Kudo if problem is solved.

I want to retrieve data from p0001-PLANS based on the below condition,

Hi,
I want to retrieve data from p0001-PLANS
based on the below condition
select stext from hrp1000 where plvar = '01' and otype = 'S' and objid = p0001-plans and begda GE pn-begda and endda LE pn-endda.
Thanks,
Rama.

Hi
Based on the Query you have specified thoise are stoerdin an Internal table- then
select stext from hrp1000 into table t_hrp where plvar = '01' and otype = 'S' and objid = p0001-plans and begda GE pn-begda and endda LE pn-endda.
The check table for this PLANS is T528B .
if t_hrp[] is not intitial.
select * from t528B intot table t_528 where plans eq t_hrp-plans.
endif.
Now you can get the PLANS data.
Refer to the Text tbale for PLANS - T528T
To get the TEXTS -
if t_hrp[] is not initial.
select * from T528T into table t_528T where plans eq t_hrp-plans.
endif.
Regards
Lekha

Adding data from a text file into a JTextArea

I'm working on a blogging program and I need to add data from a text file named messages.txt into a JTextArea named messages. How do I go about doing this?

then you need to be more specific in what you need help with because those are two commonly used options for reading data in from a file. what have you tried? where is your code failing? what kind of errors are you getting? of course it looks like others in the forum have already reprimanded you for failing to post properly.
i have used both FileReader and the nio package for cfg and ini files which are both just txt files as well as massive data files. so tell me how they dont help you?

Retrieve data from a text file, incrementing the last value and save new value below

Similar Messages

Maybe you are looking for