Files in Labview and Notepad

How can I programmatically (in my LV code) determine if a file is open in notepad?
And if the file is open how can I close notepad programmatically from my labview code?
Solved!
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Is your problem solved? If so could you please mark my post as solution to your problem. This will help others in the future who are facing same problem and looking for a solution.
Thanks for your understanding,
Mathan

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How to load .wav files in LabView and vi for TDM,FDM,QPSK,ASK

Hello
I am doing my project in LabVIEW that is VIRTUAL TELEPHONE COMMUNICATION SYSTEM
AND APPLICATION OF LABVIEW IN ADVANCE COMMUNICATION TECHNIQUES.I have implemented every block till date but for the rest part of my project that is advance communication techniques i need vi for QPSK,TDM,FDM,ASK and I just wanted to know how to load .wav file in LabVIEW
Please assist me for this
Attachments:
Telephone communication process.docx ‏25 KB

Hi Dilpreet,
reading wav files is easy using the functions from the sounds palette...
For your other tasks you could use a seperate toolkit or do some programming on your own!
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

How to create an exe file using labview and arduino?

I bought Arduino Mega 2560. I have installed Arduino IDE 1.7.3. I am using Windows 7 64bit version and Labview 2012. I started working after the compilation of LIFA_Base File with Arduino IDE and with labview.
My application is: I have connected my arduino to my PC via USB for read input/output pins. I have to read all the time an analogue input from arduino and I have to draw the graphical representation of the input. I would like to know if I can create an exe file of this application. I would like to use the created exe file to another PC without labview installation.
Please help me to resolve the problem.
Regards

Yup you sure can. With Application Builder, that is bundled with several LabVIEW packages you can make an EXE, and then make an installer that can include the LabVIEW Run-Time engine (free) and you'll also need the VISA run-time for talking to serial devices like your Arduino.
Then you should be able to run that installer on any normal Windows PC and without the development environment be able to run your program.
Note that currently Student, and Home versions of LabVIEW do not have the application builder since it is intended for learning, and hobbyist, not for distributions.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

Why does TDM Importer start up when I open an Excel file in LabVIEW, and how can I stop it?

I have a new application using LabVIEW 2012 SP1. I open an Excel file using the Report Generation toolkit and when I do so, a small TDM Importer window pops up on top of the Excel file.
How can I prevent this?

Hi Steve,
The TDM Importer pops up because the report generated in LabVIEW is in the TDMS file format. TDMS is a binary file that requires an importer to make sense of the binary data and translate it into an Excel spreadsheet. As per this white paper, the appearance of the floating toolbar is expected behavior: http://www.ni.com/white-paper/5874/en/
To the best of my knowledge, you cannot get rid of the floating toolbar unless you uninstall the add-in, in which case you probably would not be able to open your LabVIEW-generated reports. However, as of Excel 2007, the toolbar is embedded in the "Add-Ins" tab instead of floating on your spreadsheet. You can see how the toolbar looks as of Excel 2007 in step 6 of this white paper: http://www.ni.com/white-paper/5885/en/
If there is a way to embed the toolbar in Excel 2003, it would be the exact same way you would embed any other floating customer toolbar in Excel. In other words, I don't think this has anything to do with the fact that it's NI's add-in. This is just the way Excel 2003 and earlier treats add-in toolbars. Someone on these forums may well know a way to embed it (perhaps a macro?), but you may have better luck contacting Microsoft. I'm not sure whether it's even possible for a user to embed the toolbar.
David R
Applications Engineer
National Instruments

Can load image from file using LabVIEW and display on IMAQ graph?

I dont have IMAQ Vision for LabVIEW on my computer. Is it possible to load image file and display on an IMAQ graph?
Thanks!

Hey werwr,
In response to: "I dont have IMAQ Vision for LabVIEW on my computer. Is it possible to load image file and display on an IMAQ graph?"
As of right now, in order to read an image from file, you actually do need the IMAQ Vision software. The IMAQ driver without the Vision VI's will allow you to collect images from a framegrabber, and it will allow you to save those images to file. But the function that allows you to read an image from file does require the Vision VI's. Once you have the VI to read images from a file, you will be able to display the image on an IMAQ "Graph" or otherwise known as an Image Display.
I hope this helps. Please let me know if you have any further questions.
Thanks,
DJ
Applications Engineer
National Instruments

How i can access and edit the table of database(.mdb) file through Labview

Dear sir,
I want to access and edit the table of database(.mdb) file through Labview and it should save.
please tell me how i can do it.
i am waiting for reply.
regards
Rajendra

there are options aplenty for this. First off, do you have the database connectivity toolset? If so, You can do it from there. Following the examples in labview. Or you can do a search for ADO or access database, and find plenty of VIs that can do this.
Paul <--Always Learning!!!
sense and simplicity.
Browse my sample VIs?

Can I use a camera for application in Labview and VBAI at the same time ?

Dear all,
I'm trying to save an AVI file with Labview and make an image process with VBAI at the same time, in one machine.
The error : "Camera already in use" displayed.
My Camera is a GIGE and I work with Imaqdx. I've test the multicast mode but it only operate with several machines.
How can I do this ?
Thank's to help me,
Yoann B

I'm not necessarily saying that. It's been a while since I've used VBAI, so I don't remember all of the capabilities, but if VBAI can do the inspection and recording at the same time, you should be fine.
The trick is that only one program can access the camera at the same time. That application reserves the camera, thus making it unavailable to others.
Chris
Certified LabVIEW Architect
Certified TestStand Architect

Plotting data from a text file in LabView 7.1

This my be a stupid question, but here is goes. Working with another person, far more LabView experience than I, a VI was created to take data and output it on the screen, real time, as an x-y plot. Once the test was completed the data was stored in an .txt file which could be read into Excel. Now the end user wishes to read the old data back into Labview with an x-y plot of the data, the same way it was displayed during the test. Before I started to pound my head against the wall, thought I would ask this to the group. Everyone has been very helpful in the pass, so hopefully this will be an easy question for the group.
The question is how do I import a text file into Labview and plot it on an x-y screen?
Thanks,
Scamper

It really depends on how you've saved the data. If you have a simple text file with x data in one column and y data in another, then you can use the code below. It's just a Read From Spreadsheet File, and Index Array, and Bundle function. Modify as needed for your actual data. If you get stuck, post a small example of your data file.
Message Edited by Dennis Knutson on 09-17-2008 11:10 AM
Attachments:
Read XY Graph.PNG ‏3 KB

Deleting a column in a text file using LabVIEW

Hello all,
I'm trying to delete the first column of my tab delimited text file using LabVIEW and then save it under the same file name. Can someone show me a quick way to perform this operation. Is this even possible with LabVIEW? Any help would be much appreciated.
My purpose is to automate this operation for hundreds of daily text files containing data that needs processing. I'm currently using LabVIEW 8.2.
Thanks!
-noviceLabVIEWuser

If the file is relatively small:
Read the file using the Read from Spreadsheet File VI to get 2D array.
Remove the column from the 2D array.
Write out new 2D array to new file using Write to Spreadsheet File VI.
If the file is relatively large then you will likely run into memory issues. In this case you will need to read the file in chunks. You can decide how many lines to read at a time. Use a for-loop that's set to run for the number of chunks to read (based on the total number of lines and the number of lines you want to read at a time). Hint: Quotient & Remainder function. In the loop use the Read Text File VI to read your set number of lines. Convert the lines to a 2D array delete your column, and write out that chunk of data to the new file. Rinse and repeat.

How to use a c file in LabVIEW

Hi All,
I have a c file which communicates through serial port and J1850 protocol. I want to use the C file in labview and do the communication through serial port.
Can any one give me an idea how I have to use the c file in LabVIEW.
Thank you.!
---------------- Be Good. Do Good. ---------------------

Have you tried reading the LabVIEW Help or even searching this web site? This question has been asked MANY times. There's a section in the LabVIEW Help called "Calling Code Written in Text-Based Programming Languages." There are also several articles written on this. Here's just one: https://decibel.ni.com/content/docs/DOC-1690
Please do the research and then come back with a more specific question.

Read access mdb file in labview via ADO/DAO problem

Hi guys,
I am now facing one problem that I want to import ACCESS database (ver2000) files into labview and turn it into tables.
but if I use ADO(actually using LABSQL) I have to create the ODBC in control panel, if I use DAO, I don't know how to call the activeX method.
I would like to realize like this:
choose in a directory which mdb file I would like to open, and then open it and show it in a labview table, but using AD0 I have to create connection for each file, does it stand a chance to open it without specify the connection in control panel?
He Liang

You can use a Connection String defined by you like this
You can get the basic connection string by creating a UDL file and editing that file in Wordpad.
Hope this helps
David
Message Edited by David Crawford on 11-27-2006 01:04 PM
Attachments:
Connection String.jpg ‏13 KB

CANoe files on Labview

Hello
I'm a CAN and Labview beginner.
Is it possible to import both a .cfg and .dbc CANoe files into Labview and operate a CAN bus with NI PCMCIA-CAN/2 instead Vector cards ?
(I have the Vector files but not the hardware and the CANoe license...)
Thanks

Hello Algarroba,
LabVIEW can use dbc files importing the copnfiguration in MAX and using the NI-CAN channel API... but nothing about .cfg files. Sorry.
http://zone.ni.com/devzone/cda/tut/p/id/4294
If you are using CANoe, the best idea could be to use the LabVIEW API Vector offers for their boards.
Regards

Print text file with labview 2011 and windows 7

I am having some strange problem, hope someone out there knows the solution.
We have a labview program running under windows xp, the program runs some test and print label from a local label printer. Last week, I have to upgrade the computer to windows 7 and all the sudden the printer will not print any more.
The print vi is very simple. I am using the report function and I am attaching the diagram of that vi below.
If I use windows notepad to open that small text file, I can print fine. This means the printer driver itself is OK. However, if I print the same text file through Labview printing vi, from the printer's task list, I can see it does not recognize the char. From the attached png file, the top one is the task from notepad, it shows 2 pages and the bottom one is from the labview, it becomes 33 pages.
For the printer part, I use Generic / Text Only printer driver which comes from windows itself. And I am aslo attaching a sample of the text file, there are quite a lot of special char, it is for print bar code. When I tried to use labview print text vi to print general text from my computer to a regular printer, the vi works. So it seems Labview print can not handle the special char? Although it worked many years under windows XP in the past.
Welcome to any suggestions!
Thanks
Attachments:
print vi.gif ‏9 KB
labview print bug.png ‏26 KB
SerialLabel.txt ‏1 KB

DGU wrote:
where to check RAW or TEXT? the print report vi only asks for file name and printer name.
When I print from notepad, everything just goes by default. This is a label printer, so I never need to specify printing parameter such as size, orientation, etc in the past
Famous last words go something like this: "...never had to do that before." Maybe you have to do that now. It's worth at least comparing the defaults settings for bothe generic drivers. It could save you a lot of headache if you notice something different.
Bill
(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
Proud to say that I've progressed beyond knowing just enough to be dangerous. I now know enough to know that I have no clue about anything at all.

I am receiving the data through the rs232 in labview and i have to store the data in to the word file only if there is a change in the data and we have to scan the data continuasly how can i do that.

i am receiving the data through the rs232 in labview and i have to store the data in to the word or text file only if there is a change in the data. I have to scan the data continuasly. how can i do that. I was able to store the data into the text or word file but could not be able to do it. I am gettting the data from rs232 interms of 0 or 1. and i have to print it only if thereis a change in data from 0 to 1. if i use if-loop , each as much time there is 0 or 1 is there that much time the data gets printed. i dont know how to do this program please help me if anybody knows the answer

I have attatched the vi. Here in this it receives the data from rs232 as string and converted into binery. and indicated in led also normally if the data 1 comes then the led's will be off. suppose if 0 comes the corresponding data status is wrtten into the text file. But here the problem is the same data will be printed many number of times. so i have to make it like if there is a transition from 1 to o then only print it once. how to do it. I am doing this from few weeks please reply if you know the answer immediatly
thanking you
Attachments:
MOTORTESTJIG.vi ‏729 KB

How do I find out the exact path of each and every file that LabVIEW finds and loads into memory for a given top level vi?

How do I find out the exact path of each and every file that LabVIEW finds and loads into memory for a given top level vi? There is probably a trivial, easy way to get this info, but I have not yet found it! Thanks..

Or if you want to grab all the paths programatically, try the attached VI.
Open the top level that you want all the paths from and close all others, then open the
attached and run it. It will return an array of all the VIs that the VI
in question uses, including vi.lib VIs. You can filter these as well if
you like.
Ed
Message Edited by Ed Dickens on 08-01-2005 07:01 PM
Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.
Attachments:
Get all paths.vi ‏29 KB

Files in Labview and Notepad

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