Questions on Saving and mining data with Labview and DIAdem

Hi,
I am sampling two signals at 200k sampling rate. I am trying to save the data on harddisk and analyzing the data using DIAdem.
If I save the data using mesurement file format .tdm and .lvm, the file size will be about 4 Gigabytes for only 10 mins' acquisition. It is very slow to process it.
I used the software Clampex and pCLAMP(Axon Instruments) before. At the same 200k sampling rate and also acquiring two signals, these programs save the data as .atf format and the size is only 400 MB for 10 mins' acquisition.
I wonder if there is also a good way to handle this situation using Labview and DIAdem, and how to do it?

Hi, Jonathan:
I tried the TDM binary file format. The file size is 800 MB per min acquisition and it will take a long time to just open these files. For my application, I have to take data for several hours. I am looking for a way to reduce the size of files.
Is there any other type of file format that can reduce the size significantly and can be handled easily?

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Logging data with LabView and FP-DI-330

Hi,
I have a problem.
I am monitoring 6 ports of the FP-DI-330, via LabView.
I have it runing in a while loop that desides the update frequency. It then get stored in a txt file with the time in Hours, Minutes and Seconds. I need the time in milli seconds to skill betwen the diferent input times. Because the different input´s can come in the same second.
i have added the vi file
Enyone have an sugestion?
Attachments:
FP_DI_330.vi ‏75 KB

First of all...
i will throw away the boolean display. But the Spreadsheet is the formation of the logfile is it not?
I will need that to get the data nicely organized.
I dont know how to get milli seconds displayed enywhere. If i use for example the tick count (MS) it starts with a number around 3287101, should it not start with 1 and then count up?
"Further in your vi, you forgot to connect the current time to the Get Date/Time string. Can't you use the millisecond values for building the time-values?"
How can i connect the current time to the Get Date/Time String? And how should i use the ms timer values for building time-values.
file-info of the log-file? What?
Thanks for the ideas but i could really use some help.
I would think th
at it could not be that dificult making a simple ms count to add to the time for every line of the logfile. But i cant get it to work.

Face and Eye Tracking with LabView and Vision

Hey all,
For my senior project I am trying to perform face tracking and eye tracking by using LabView and the Vision Development Module. Unfortunately I am new to LV and I'm drowning in a sea of links and tutorials so I was wondering if anyone here that has had experience performing similar tasks would be willing to help and point me in the right direction or provide examples. I bought two Logitech c525 webcams and hooked them up to my pc running LabView and Vision 2011. I was able to see images captured but that's as far as I've gotten with the tools. Any tips?
Thanks,
Alex.

have a look at http://sine.ni.com/cs/app/doc/p/id/cs-14116 and http://forums.ni.com/t5/Machine-Vision/how-to-track-face-and-allocate-lips-in-face-using-labview/td-...
This thread would also be more suited to the Machine Vision section.

How to generate BPSK and QPSK signals with Labview and ARBS?

Has anyone used Labview to program a Wavetek 75 or equiv Arbitrary Waveform Generator to produce BPSK and/or QPSK signals.

You can use Modulation Toolkit 2.0 for LabVIEW to generate PSK signals (including BPSK and QPSK) using common PSK configuration parameters.
http://sine.ni.com/apps/we/nioc.vp?lang=US&cid=12855
You can use resampling tools present in Modulation Toolkit if you need to resample the generated data to a different sample rate for your third party AWG.
In addition, Modulation Toolkit integrates seamlessly with NI's high-speed signal sources, including the NI 5421 for PXI:
http://sine.ni.com/apps/we/nioc.vp?cid=12472〈=US

I need a step motor and controller compatible with LabView Can you recommend any

I need a step motor compatible with LabView and I thought i would check with you before i moved forward in my experiment

Dear chapbs,
I've attached a sample cart below to show you the components for a possible setup of your system. Keep in mind that whatever stepper drive you purchased would power your motor. If you go ahead with the purchase of a controller & drive, I would highly recommend contacting NI to insure that you purchased the correct accessory components and cables to connect & power the components. I hope the sample cart is helpful. I created it by browsing ni.com, adding items to my cart, and then saving the cart to an excel file. Please post back if you have additional questions.
Best Regards,
~NH
Attachments:
SampleCart.pdf ‏145 KB

How to switch central frequency fastly with labview and USRP?

Hello everybody,
         Recently I was making a frequency hopping receiver with labview and USRP N210 and SBX. The transmitter works on the 2.4G band, and it changes from one central frequency to another every 65536us. As I think, if I start receiving at the correct time, and change the central frequency of the USRP every 65536us, I should be able to receive the data.
    But I find that, when usrp switch form one central frequency to a different one, it spends nearly 48ms and when it switch from one frequency to the same one, it only spends 3ms(I test the performance by modifying the niUSRP EX Rx Continuous Async Reconfig on the Fly.vi example). So if I want to follow the hopping sequency, I may can only receive 17ms data because I have to save time for switching central frequency.
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There is an attribute "LO Frequency" that you can use to lock down the frequency of the local oscillator. Then, when you set the "Carrier Frequency" attribute, the difference between the carrier frequency value and the LO frequency value will be realized by frequency shift in the DSP in the FPGA. Changing this "digital" frequency shift value is much faster, since you don't have to re-tune the local oscillator.
Let's say you're sweeping from 2.44 GHz to 2.46 GHz. Set the "LO Frequency" to 2.45 GHz then Commit. Then, in your loop, program the "Carrier Frequency" attribute from 2.44 GHz to 2.46 GHz. In the loop, it will only program the digital frequency shift, which will happen much faster.
Another tip is to use the property node to program only the attributes you want to change, rather than the niUSRP Configure Signal.vi (which sets many at once).
For more details, see the "Configuration:Advanced:LO Frequency Property" in the NI-USRP Help, and look at this example:
<LabVIEW dir>\examples\instr\niUSRP\niUSRP EX Fine-Tune LO Frequency.vi

What Are The Minimum Permissions In Order An User To Be Able To Access User Profile Data With JavaScript And REST API

The question says it all:
What Are The Minimum Permissions In Order An User To Be Able To Access User Profile Data With JavaScript And REST API.?
In the User Profile -> Permissions there is only the option for "Full Control".

Hi Nikolay,
Thanks for posting your issue, you need to set permissions on User Profiles = Read. Kindly find the below mentioned URLs to get the code and more details on this.
http://www.vrdmn.com/2013/02/sharepoint-2013-working-with-user.html
http://www.vrdmn.com/2013/07/sharepoint-2013-get-userprofile.html
http://sharepoint.stackexchange.com/questions/61714/sharepoint-2013-call-the-rest-api-from-sharepoint-hosted-app
http://www.dotnetmafia.com/blogs/dotnettipoftheday/archive/2013/04/09/how-to-query-sharepoint-2013-using-rest-and-javascript.aspx
I hope this is helpful to you, mark it as Helpful.
If this works, Please mark it as Answered.
Regards,
Dharmendra Singh (MCPD-EA | MCTS)
Blog : http://sharepoint-community.net/profile/DharmendraSingh

How to compile COM 1 data with LabVIEW?

I have a device connected to my COM 1 port. How do I input data with that into labVIEW? The program that comes with it is really elementary, it only shows me the data that the comes straight from the device, no analysis. Its like labVIEW and MAX dont recognize the device, but my device manager says its connected and works fine. How do i input that data and compile it with labVIEW?

Much better
MAX will not detect instruments connected to a com port. The reason is that there is no standard for serial instruments (unlike GPIB). You should only have your com port listed in MAX. If the instrument is listed in your device manager, then it sounds like the driver you got with the instrument is a little weird. It may be that the driver software has taken control over one of your serial ports. Normally, all you would have to do is use the serial functions on the Instrument I/O palette. However, if the instrument driver has taken control of the com port, you won't be able to do this because the OS will only allow one process access to the port at any one time. You can test this by trying to open a Hyperterminal session to the com port. If you can an error indicating that the port is in use, then that's the driver running in the background. You can uninstall the driver and everything should be okay. You could also try to use the driver as provided. I'm assuming it's a DLL. You could call the functions in the DLL with the LabVIEW Call Library Node function. You will need documentation from the vendor on the DLL in order for this to be done. It's probably simpler, though, just to use the LabVIEW serial functions. You would still need the command set/syntac from the instrument manufacturer in order to communicate with it.

Record audio with labview and audio dataplugin

The thing I would like to do, is write waveforms to WAV/wma/mp3 files.
The way to do this, is probably with the help of the audio data plugin.
However, it is far from clear how to configure and use this plugin with LabView. There is documentation available for DIAdem, but what good is that to me, as a simple LabView user?
There is also an example for reading dataPlugin data with LabView, but this example is:
A) not working, e.g. it cannot open a simple WAV file, when using "uspAudio" as DataPlugin Name
B) not documented
C) not handeling errors
D) only reading, not writing, which is slightly more complicated.
So, tips for writing waveform to audio files and/or
tips for working with dataPlugins in LabView would be welcome...

Ok, so, now I can read a WAV/WMA/mp3 file, see attached VI
There's still one problem: writing data to a WAV/WMA/mp3 file. In my "DataPlugin Write Audio File.vi" I try to read from / listen to a microphone connected to a AD card. On the Waveform graph, I see my signal correctly, but in the WAV file, there is only a flat line (zero's).
Perhaps it is needed to add properties to the group, but I don't know which properties to add...
All advice is appreciated...
Message Edited by bram@tno on 08-08-2007 07:00 AM
Attachments:
DataPlugin Load Audio File.vi ‏46 KB
DataPlugin Write Audio File.vi ‏229 KB

Cannot get wanted data with MAX and GROUP BY function

Hi
All
I have a table like below:
COLUMN     TYPE
USER_ID     VARCHAR2 (10 Byte)
PROCESS_ID     VARCHAR2 (30 Byte)
END_TIME     DATE(STAMP)
TO_LOC     VARCHAR2 (12 Byte)
TO_LOC_TYPE     VARCHAR2 (15 Byte)
FROM_LOC      VARCHAR2 (12 Byte)
ITEM_ID     VARCHAR2 (25 Byte)
CASES     NUMBER (12,4)
LMS_UDA1      VARCHAR2 (250 Byte)
ZONE     VARCHAR2 (2 Byte)
I only want get one record with all columns, only have one clause MAX(END_TIME)
But the other column have difference value.
when i use MAX(END_TIME) and GROUP BY USER_ID,PROCESS_ID,CASES,....
the sql didnot give one record,
It give many records
Please help me on this
Regards
Saven

Hi, Saven,
Sorry, it's unclear what you want.
Whenever you have a question, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all the tables involved, and the results you want from that data.
Explain, using specific examples, how you get those results from that data.
If you can show your proiblem using commonly available tables, like those in the scott or hr schamas, then you don't have to post any sample data: just the results and the explanation.
Always say what version of Oracle you're using.
See the forum FAQ {message:id=9360002}
Are you trying to see all data related to the highest (that is, latest) end_time?
I think you want something like this, that finds all the ionformation about the employee with the latest hiredate:
WITH     got_r_num     AS
     SELECT     emp.*
     ,     ROW_NUMBER () OVER (ORDER BY hiredate DESC NULLS LAST)
               AS r_num
     FROM     scott.emp
SELECT     *     -- Or list all columns except r_num
FROM     got_r_num
WHERE     r_num     = 1
;What do you want in case of a tie, that is, if 2 or more rows have the same latest end_time? You may need to add tie-breaking expressions to the analytic ORDER BY clause, and/or use RANK instead of ROW_NUMEBR

Importing and Exporting Data with a Clob datatype with HTML DB

I would like to know what to do and what to be aware of when Importing and Exporting data with a Clob Datatype with HTML DB?

Colin - what kind of import/export operation would that be, which pages are you referring to?
Scott

I have order number and order date with me want to down load adobe creative cloud can you advise how to go about it

i have order number and order date with me want to down load abode creative cloud on my desktop pls can you advise me how to go about it pls

Creative Cloud Help / Creative Cloud for desktop
https://helpx.adobe.com/creative-cloud/help/creative-cloud-desktop.html
Creative Cloud Help / Sign out, Sign in | Creative Cloud desktop app
http://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html
Creative Cloud Help / Install, update, or uninstall apps
http://helpx.adobe.com/creative-cloud/help/install-apps.html
Installing Creative Cloud Apps
http://tv.adobe.com/watch/cs6-creative-cloud-feature-tour-for-video/installing-desktop-app s-from-creative-cloud/

How can we share and transfer data at Labview using the internet

How can we share and transfer data at Labview using the internet
Dr. Eugene Berman, Moran Kamilyan and Ravit Bar

[email protected] wrote:
How can we share and transfer data at Labview using the internet
Check these links:
Basic TCP/IP Communication in LabVIEW
Data Sockets
Integrating the Internet into Your Measurement System

How can i work simultaniously with labVIEW and Excel ?

Hello . I study engineering and need some help with labVIEW, and the connection to microsoft excel.

Hi
NI offers an "Report generation toolkit". You get some VI's with this toolkit and so you can directly create your reports from LV.
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http://zone.ni.com/devzone/devzone.nsf/webcategories/C3E56C69D399361E86256AB7006A9149?opendocument&node=DZ53003_US
Regards,
Luca

Anyone got experience with LabView and JTAG ?

Anyone got experience with LabView and JTAG ?
Especially in system programming of Altera and FLASH

Yes, I've actually driven JTAG using DIO, but this was a project in itself.
I guess you're just wanting to get the job done! I'm currently evaluating
gear to do the same job myself, in addition to interconnect testing. I've
been looking at JTAG Technologies equipment. They do PCI/PXI cards and the
SW, with a LabVIEW interface.
They're at:
www.jtag.com
You'll need to be sitting down when you get their quote though - their development
system costs about the same as a decent car!
Cheers
-Sean.
[email protected] wrote:
>Anyone got experience with LabView and JTAG ? >Especially in system programming
of Altera and FLASH

Questions on Saving and mining data with Labview and DIAdem

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