Problems with displaying read data from a .lvm file

Hi all.
I aquire data with the PCMCIA card 6036E. I aquire online in Labview 7 and store the data in a .lvm file. When i try to display the same data i aquired before with the "read .lvm file" express vi, the waveform chart redraws itself after an undefined time, sometimes it redraws faster and sometimes it takes longer. WHY? i have only one header per aquisition and if i restart the aquisition a new file is written! I tried almost everything. Is this a bug from labview 7?
I really appreciate your help.
best regards,
Bernd

Hi Khalid,
Here is a simplified version of my VI and also 2 .lvm files from the logged data. Sorry for the size, but I aquire with a sample rate of 20 kS/s and my main frequency is only 0.3 Hz. In the 6MB file I aquired a little more than 3 periods. When you run the VI with this file at the beginning it redraws very often and very fast, then after some time it draws about 1 period and then it redraws again and so on. I want that the hole data from this file is displayed at once. The 900kB file is aquired with 10kS/s and about 1.5 periods. This is the last size the displaying is working with. You think it is possible that the VI only works until 1MB? But my data usually is much bigger than that. I hope you can use the data because it is
zipped, but otherwise it wouldnt be possible to post it.
Thank you very much for your help, I really appreciate it!
Best regards,
Bernd
Attachments:
simplified_VI_for_offline_data_display.vi ‏79 KB
2004-07-01_Messung9.zip ‏191 KB
2004-07-01_Messung4.zip ‏680 KB

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     BufferedReader in = new BufferedReader(new FileReader("rates.txt"));
     String temp = "";
     while((temp = in.readLine()) != null) {
        strRate[j] = temp;
        j++;
RateValue1 = Double.valueOf(((String)(strRate[1]))
).doubleValue();
//        RateValue1 = Double.parseDouble(loanAmountTxFld.getText());
        in.close();
         catch (FileNotFoundException e) {
             System.out.println("Can't find file rates.txt!");
             return;
*Method for determining which loan option was chosen
private void calc() throws IOException{
String interestTerms = (String) cOption.getSelectedItem();
if (interestTerms.equalsIgnoreCase("5 yrs at 5.00"))
     calcResults(loanResults, Double.parseDouble(loanAmountTxFld.getText()), 0.05/12, 60);
else if (interestTerms.equalsIgnoreCase("7 yrs at 5.35"))
    calcResults(loanResults, Double.parseDouble(loanAmountTxFld.getText()), RateValue1/12, 84);
else if (interestTerms.equalsIgnoreCase("15 yrs at 5.50"))
     calcResults(loanResults, Double.parseDouble(loanAmountTxFld.getText()), 0.0550/12, 180);
else if (interestTerms.equalsIgnoreCase("30 yrs at 5.75"))
     calcResults(loanResults, Double.parseDouble(loanAmountTxFld.getText()), 0.0575/12, 360);
else if (interestTerms.equalsIgnoreCase("       "))
    calcResults(loanResults, Double.parseDouble(loanAmountTxFld.getText()), Double.parseDouble(loanInterestTxFld.getText())/100/12,Integer.parseInt(loanTermTxFld.getText())*12);
}

Need to read data from pipe separated file using POJO?

Hi,
I need to read data from pipe separated file using POJO.
There is config.properties file which consists of the
data mapping.
Can you help me with sample code or help?
Regards
Regards
Taton
Edited by: Taton on Mar 7, 2009 4:41 PM

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.

View Object to read data from a java file

Hi,
I am using JDeveloper 11.1.1.4 and ADF-BC in my application.
For one of my view objects , I want the data to be read from a java file which exposes some method to return a collection.
I cannot use a static view object in this case.
Please suggest the best way to implement this requirement.Basically build a view object that should read data from a java file.
Thanks,
Praveen

Depending on your use case you can either use a programmatic VO or directly expose the JV class as a data control.
http://docs.oracle.com/cd/E18941_01/tutorials/jdtut_11r2_36/jdtut_11r2_36.html

Help! How to read data from an Excel file?

Hi,
I need to read data from an Excel file that may contain more then one table in a sheet. How can I read them?
I would be eternally grateful to anyone who can give me any information.

Did you try POI from Apache?
http://jakarta.apache.org/poi/index.html

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.

How to read data from a .txt file in real time

Hi
I am running a fortran code which takes around 1 week to run and output data are continuously saved in .txt files. I want to display these data and plot it against time in labview.
Lets say I have a array of real numbers starting from 1.0 , and every 2-3 sec another number is added (output of code). So I dont want end-of-file-reached error in my program and also want program to wait until next data is updated in .txt file.
I tried to make a simple read_txt_file.vi, but I am getting problems in terms of continous reading. Help !! Help !!
Pl see the attached vi.
Thanx
PKJ
Attachments:
FileReader.vi ‏43 KB
labview.txt ‏18 KB

Hi PKJ,
I modified your VI and it seems to do what you asked, that is, display the data from a file as the data is being added.
Hope it helps!
Message Edited by Dynamik on 11-08-2005 04:32 PM
Message Edited by Dynamik on 11-08-2005 04:34 PM
When they give imbeciles handicap-parking, I won't have so far to walk!
Attachments:
FileReader.vi ‏52 KB

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