At 9:05 -0500 6/17/04, [EMAIL PROTECTED] wrote:
Regarding the cluster of constant values from which you can select one
using an implicit unbundle:
Is it easier to drop one constant [from the palette or file system] and
then select which subpiece to use than it is to just select which constant
you
At 9:46 +0200 6/16/04, Uwe Frenz wrote:
Ann,
you asked on Tue, 15 Jun 2004 15:27:05 -0400:
I get this message sometimes when I run my program: System is low on
virtual memory
If it is just a rare state it may well be worth just to increase the systems virtual
memory. This can be done by
At 8:04 -0400 6/16/04, Hysell Shannon wrote:
If anyone saves their previous posts- can someone forward me the various posts
regarding the RTOS using a PC?? I deleted them and now I have a thought!
You can search for any previous posting at Brian Renken's EXCELLENT search engine.
At 16:23 -0400 06/15/2004, George Gatling (Contractor) wrote:
From my days as a C programmer (shudder) I have to say I do miss the #define. I
realize LabVIEW cannot really have an exactly analogous feature because the scope of
.vi is too different from the scope of .c, but there must be some
Just to publicize a little known solution that lets one use the best development
environment with NI hardware.
One can use a cheap PC as the host for all the hardware running the PharLap RT/OS as
the target machine. This gets around the extreme cost of a PXI crate and embedded
hardware.
At 11:31 +0200 5/27/04, Rolf Kalbermatter wrote:
Scott Hannahs [EMAIL PROTECTED] wrote:
Actually, I just wrote one using one of the examples Christophe Salzmann's
quicktime interface. Works like a dream!!! Cross platform and handles all
camera's that have a quicktime driver. Contact Christophe
If you aren't into gory technical details, skip this message.
NI has 4 GPIB cards:
Looking at the NI web pages there are 4 distinct, PCI-GPIB interfaces.
#1 PCI-GPIB for windows 95/NT/200/XP/Me/98/Solaris
http://sine.ni.com/apps/we/nioc.vp?cid=5310lang=US
#2 PCI-GPIB+
At 9:57 +0100 6/7/04, Craig Graham wrote:
Why on earth is the timed while loop not in the Linux version?
Because it is a windows only function and is only in the winders and pharlap RT
versions of LV.
-Scott
At 12:24 -0400 6/4/04, Junginger, Johann wrote:
This is going to be a naïve question after this thread has been going on for
so long, but can anyone send me (or point me to) a LV7 (or earlier) example
of recursion? It sounds very interesting but I am having trouble wrapping my
head around this
At 8:07 -0700 6/4/04, PJ M wrote:
If I understand properly you know %co2 and you want to
know x right ?
Therefore you just have to solve the equation. It's a
pure math problem, no a LV one.
Let's rename your equation
%CO2=(((3.10933*(X*X))+(.5602*X)))/(0.30204-X) like so
y=(ax*x+bx)/(c-x)
=
Title: Re: Asyncrhonous Serial VISA
The VISA library AFAIK does not allow simultaneous input and
output on a single port. The difference between asynchronous and
synchronous behavior is getting a bit blurred.
Asynchronous calls to the VISA library mean that the execution
for that execution
At 12:31 -0700 6/4/04, ALTENBACH,CHRISTIAN wrote:
Quoting Scott Hannahs [EMAIL PROTECTED]
It makes an interesting story but is not the best
way to approach the problem.
'glad you brought up your recursive demo. I compared it with my entry in the
recent LabVIEW Zone Coding challenge
At 10:32 -0400 6/3/04, John Brohan wrote:
Hello
I have a device which has a PT-100 temperature sensor. The probe of this is
too thick for what I need. I want to measure the temperature of liquid in a
test tube while I'm adding some reagent. It seems that the PT-100 is a
device with some size to
At 10:01 -0400 6/3/04, [EMAIL PROTECTED] wrote:
Folks,
How does one write a hexadecimal string as ASCII characters on to a file?
format into string with a %X format (the create format string pop up will help you).
other possiblities are %x, %0X, and %0x depending if you want leading radix
At 22:15 -0500 5/26/04, Greg McKaskle wrote:
Actually, the NI wishlist still exists, and while you can post them as
many places as you like, keep in mind that NI's site is more likely to
get into the feature list.
URL is
http://sine.ni.com/apps/we/niup.ni?ap=pscloginlang=usdu=http://digital.
At 4:12 -0700 5/26/04, Hamid Shojai wrote:
Hello,
I want to work with webcam in labview. form which point should I start?
Actually, I just wrote one using one of the examples Christophe Salzmann's quicktime
interface. Works like a dream!!! Cross platform and handles all camera's that have a
At 7:25 -0500 5/25/04, Geoffrey Schmit wrote:
For example, I'm
not sure what you mean by a LV style wait. I'm not aware of a
construct that would allow a thread to wait on a synchronization
primitive and yet continue to execute. That is, a thread is either
running or waiting. If my definition
At 10:03 -0400 5/20/04, Dan Press wrote:
Printing takes time, and it wants to run in the UI thread.
Now go upgrade to LabVIEW 7.1 and XP Pro. 1999 called; they want their
software back. :)
Then upgrade to a true multi-threaded system. You know the one, that one based on a
multi-threaded,
At 7:58 -0500 5/19/04, [EMAIL PROTECTED] wrote:
If the task acquires a finite number of samples and you set this input to
-1, the VI waits for the task to acquire all requested samples, then reads
those samples.
Is this a blocking wait like the non-DAQmx call into a CIN (or LLB) or is it a LV
At 6:04 -0600 5/19/04, David A. Moore wrote:
At 10:24 -0700 5/18/04, tim wen wrote:
another question: i've been using LV2 style globals to pass data between parallel
loops
and am wondering if a queue is a better way to go?
Scott Hannahs [EMAIL PROTECTED] wrote:
Probably. If you are just
At 10:24 -0700 5/18/04, tim wen wrote:
In LV6 the 'AI read.vi' hogs the CPU waiting for the number of samples requested to
be available.
someone (sorry for not remembering the name) came up with a 'non-blocking AI read.vi'
which i have
been using happily.
i noticed the new DAQmx 'contgraph.vi'
At 13:45 -0400 5/17/04, [EMAIL PROTECTED] wrote:
I want to tell excel from LabView to open or import large data file. The
data doesn't fit on a single excel worksheet (65500 rows).
I really suggest dumping Excel. As the notable Gary Johnson defined it, Excel is a
word processor that
At 7:19 +0100 5/6/04, Craig Graham wrote:
Hmm. This message was posted some days ago and has only just appeared. List
problems?
No. Problems with sender. I am replying privately with details
-Scott
At 9:44 -0700 5/6/04, andrew johnson wrote:
Is there yet a list of labview bug fixes that 7.1 incorporates?
AFAIK, it is NI policy NOT to distribute a list of bug fixes. I have been variously
informed this either for competitive reasons or it avoids confusing the users.
Standard disclaimer, if
List of features at:
http://www.ni.com/labview/upgrade.htm
PROTECTED]
http://www.info-labview.org/
and
Scott Hannahs
- Dr. Scott Hannahs, Head of User Research Instrumentation -
- http://sthmac.magnet.fsu.edu -
- National High Magnetic Field Laboratory, Florida State
At 11:11 AM -0400 4/15/04, Don J Roth wrote:
I know this is a long shot but does anyone have the c or c++ code to compute the 2d
(image) cross-correlation fx? (I know that IMAQ VISION has the cross-correlation
routine but I am looking to potentially modify the 2d correlation routine to compute
Due to other duties (ie day jobs), the list move has been postponed until next Monday
(4/19/2004). This has the added benefit that any problems can merely be chalked up to
the Monday Effect!
-Scott
version of info-labview, send an email to:
[EMAIL PROTECTED]
To unsubscribe to info-labview, send an email to
[EMAIL PROTECTED]
To contact me (the list manager) send email to
[EMAIL PROTECTED]
(NOTE: the slightly different domain for this address!!)
Scott Hannahs
- Dr. Scott
Depending on how much trouble you want to go to...
You can make it a dynamically loaded VI in the built exe.
Then when you need to set its default value. Since it isn't running, then set the
value, make it a default then save the VI back into the llb. Then when you need the
value, just call
and decide
to exit the loop. Store the file and return to the main event loop.
For the stop button change event case send the new value of the stop button to the
main while loop to terminate.
-Scott
--
- Dr. Scott Hannahs, Head of User Research Instrumentation
At 11:38 AM -0400 4/6/04, Stéphane Caron wrote:
I'm using LabVIEW 6.1 Full version and I want to upgrade to LabVIEW 7 base version (I
have some reasons to do that :-) ). I don't use any feature specific to the full
version vs base version.
Is it possible to make that kind of upgrade, will the
At 1:17 PM -0400 4/6/04, Michael Aivaliotis wrote:
Ok, I guess a definition is required for the term VISA because I think we are on
different wavelengths. When I speak of VISA, I
mean any call (from LabVIEW) of the VISA Read and VISA Write functions.
That is my definition as well. But to make
At 11:33 AM +1200 4/8/04, Tim Streeter wrote:
I have been using cheap USB to serial converters, made by 'Planet', and
they have an annoying feature/bug of the same device getting alocated a
new port number if pluged into a differend USB port. This is not much of
a problem if only 1 usb to serial
At 11:12 PM +0200 4/8/04, Christophe Salzmann wrote:
Does anyone know how to set programmatically (via the VI server) the default
value of a control, this when the VI is running?
That is one of those things that can't really be done since it actually is an editing
operation. This means that the
At 2:04 PM -0500 3/22/04, Bookwalter, Dan wrote:
I would like to see Info-LabVIEW on a news (NNTP) server.
I sure hope this doesn't happen... I have tried and tried to get our IT guys
to open up NNTP for me. They simply won't do it... I am sure there are many
others in the same situation
To
Yes, and I have updated them and they are available
http://sthmac.magnet.fsu.edu/labview. The gotcha is that they use traditional
serial port calls and since LV 7.0 those calls are now routed thru VISA. There is
also a native VISA version that is much more robust and simpler. It is a great
I apologize for the cross posting, but I have gotten messages from all these groups!
There is a new version of the PCI-GPIB driver for Mac OS X. Due to people asking, I
have recompiled the driver for Mac OS X and corrected some problems so it now runs
under Panther. This has minimal testing
I think I have those covered. I don't know enough to shorten my time
anymore. I look forward to seeing the other VIs. I have no ideas how to
make it any cleaner.
It will be some work, but something like the evaluation done by NI on the different
submissions. My vote is evaluation for not
At 2:51 PM -0500 3/17/04, [EMAIL PROTECTED] wrote:
Let's have election! Primary?? It is fun:)
I'm from Florida, so I'll count the votes! Kathy Harris taught me how to do it!
-Scott
At 9:08 AM +0100 3/17/04, [EMAIL PROTECTED] wrote:
Is there anybody who has written a driver for MAC OSX10.2 for the
following cards
PCI-MIO-16XE-50 and DIO 96
See the part about RLP (register level programming) on
http://sthmac.magnet.fsu.edu/labview/LVonMacOSX.html
The DDK has examples to run
At 11:36 AM -0500 3/18/04, Paul F. Sullivan wrote:
LabVIEWers,
If I use Decimal String to Number with an I32 zero as the default, convert To
Double Precision Float, and then Divide by 1000, everything works fine for
positive and negative numbers.
To save the conversion, I tried using a DBL
At 7:39 PM -0500 3/17/04, Scott Hannahs wrote:
At 2:51 PM -0500 3/17/04, [EMAIL PROTECTED] wrote:
Let's have election! Primary?? It is fun:)
I'm from Florida, so I'll count the votes! Kathy Harris taught me how to do it!
Just to keep everyone informed, I counted the votes last night
if a change to the behaviour is required, we can take a
poll and let
the members decide. Like I said, the capability is there and we can switch this on in
the future if
necessary. For now, the primary goal is to get to a stable server.
--
- Dr. Scott Hannahs, Head of User Research
At 7:31 PM -0800 3/8/04, C. Allen Weekley wrote:
Yes. My company manufactures a variety of instruments that communicate
solely with serial. We have been using NI-VISA and are happy with it,
but NI-VISA requires an installation that is often larger than the
application we supply to our customers,
At 4:27 PM -0800 3/8/04, C. Allen Weekley wrote:
Has anyone written VI's to perform serial I/O using functions in
kernel32.dll?
Allen,
Why re-invent the wheel? Actually the people who did this are the people who wrote
the VISA library. Any reason not to use their work?
-Scott
At 4:25 PM + 3/2/04, Craig Graham wrote:
From: [EMAIL PROTECTED]
I have a Labview application which is meant for test and measurement
application to test some the units in production,
Randomly this application is restarting the system ( running on Win98SE OS
Ditch that for a start. Go
Because in A, once you close the front panel there is no reference to the VI, unless
it has opened its own reference.
At 1:38 PM +0200 3/1/04, Yonatan Tidhar wrote:
From my experience (6.1)
At the top level VI:
A) if I use property node FP.Open and wired False Value to it and the reference
At 11:41 +0200 02/23/2004, E. Blasberg wrote:
A colleague wants to build an application where a Password dialog appears and only if
the correct password is entered would the main VI appear.
1) Launch Password which then uses VI server to launch Main VI
2) Embed the password VI in the Main VI,
://sthmac.magnet.fsu.edu/labview/vi_library.html (that is not truly recursive
either, but I will redo it someday).
-Scott
--
- Dr. Scott Hannahs, Head of User Research Instrumentation -
- http://sthmac.magnet.fsu.edu -
- National High
At 17:56 -0500 02/18/2004, Scott Hannahs wrote:
An example can be downloaded at:
http://sthmac.magnet.fsu.edu/downloads/labview/bugs70/ChartSpeedTest.vi
And if anyone tried the example, it is now fixed and truly a LV 7.0 file! Sorry about
that. If someone wants to try it under LV 6.1, let me
At 18:18 -0500 02/13/2004, Subramanian, Shankar, K wrote:
How different is it to configure and acquire data using serial port rather
than NIDAQ card. Could anyone help me out in this?
A lot different. Now the problem is communication with a device rather than
configuring a board. Whole
At 20:49 -0300 02/16/2004, Daniel Alejandro Moyano wrote:
I would need to know if it is possible to remove the window case in the
picture.ctl. I mean, I would like to show a picture less window case.
Color the boarder transparent.
-Scott
suggestions anyone has on this.
array to spreadsheet file, function and give it a %b format string with a ,
(comma) delimiter. Convert your array to U8 first so it is only 8 bit values.
-Scott
--
Dr. Scott Hannahs, Head of User Research Instrumentation
http
At 23:15 -0600 02/16/2004, Greg McKaskle wrote:
Of course this is one of those
topics that is difficult to discuss in writing, so please don't use your
whiney voice when reading it. I'm simply trying to give insight into
our process.
This process is not unique. One can substitute any large
The selfish spirit of commerce ... knows no country, and feels no passion or
principle but that of gain.
-Thomas Jefferson (1743-1826)
At 12:30 + 02/13/2004, Craig Graham wrote:
The next is in the other port settings. The manual specifies 1 start bit, 8
data bits, 1 stop bit, no parity. The VISA serial stuff in Labview 7, which
I've only just started playing with, has properties for stop bits, data bits
and parity which I've
, http://sthmac.magnet.fsu.edu/labview/buglist70.html
There are several others as well. (waveform chart drawing, etc). FYI: these have all
been reported to NI thru normal channels as well as beta test versions.
-Scott (beating the dead horse of software reliability)
--
Dr. Scott
This is obviously my grumpy morning. And I have even had my prescribed dosage of
coffee...
I have been working with some software from a major instrumentation manufacturer. It
is one of those VIs that tries to do everything with multiple tabbed front panels and
lots of user interface
At 10:34 -0600 02/13/2004, Scott Serlin wrote:
What is the difference in performance I could see between running two
separate pci cards, one pci card and one agp card, or one dual-monitor
card?
Depends on what else you use the PCI bus for. It is slower performance for raw bit
pushing than the
At 11:24 -0500 02/11/2004, Ross, Michael wrote:
I have been interested in this thread - it is pretty normal for people
(managers/clients) who don't actually use LV or DAQ to ask for something
that doesn't make complete sense.
Do I risk irritating them by trying to make it make sense from the
Well I am not talking about skateboard competition here, but interprocess
communication. I have found that the LV library manager will hang forever (not hang
ten) when asked to list dates of files in a directory that contains a named pipe.
This probably causes problems with other types of
At 15:43 + 02/05/2004, Nuno Lambuça wrote:
I know that the serial data in a parallel port is a loss of 7 databits, but
it was the cost :(
Yikes. You really wanted to try to send serial data using one signal on a parallel
port? I doubt that could be reliable at almost any baud rate! For a
FFTs phase slip will reduce the signal to zero after
enough time. RMS averaging will average the magnitude. Very different.
-Scott
--
Dr. Scott Hannahs, Head of User Research Instrumentation
http://sthmac.magnet.fsu.edu
National High Magnetic Field Laboratory
The benefits are that you can see the signal change during the 120 second acquisition
time. You could see a 200 hz signal oscillate back and forth for example. This is
the approach taken by the JTFA (joint time frequency analysis) toolkit. They use
gabor spectrograms that take gaussian
You are close to what a waveform analyzer does. It is not mathematically very clean,
but it is useful for watching frequency evolution over time. But you need a time
averaging buffer.
For each of the 6 segments, do an FFT and get the Mag and phase. Have a buffer that
is the same length as
At 12:52 -0600 02/03/2004, Vic Blosser wrote:
Missed steps, non-functioning portion of the application. Things will work in the
development environment but not after it's compiled. I tried saving as 6.1 but there
are too many errors.
I'm seeing is code within loops not completely
At 13:53 -0600 02/03/2004, Vic Blosser wrote:
It in the error log indicating that certain vi's from the user libraries, instrument
drivers and of course some of the labview vi's can not be saved in 6.1. It is a
fairly substantial list.
Right, but all those should still exist as 6.1 files and
At 22:41 -0800 02/01/2004, Joe wrote:
I'm trying to read data packets from a sensor that
is connected through a serial port and is
configured to transfer data every 100ms. what is
the best way to synchronize the reading intervals?
Set up a read to timeout after 200 ms if you know your
At 08:47 -0700 01/30/2004, Jim West wrote:
It is a mystery to me why the VI cannot be open or running. This
eliminates several useful scenarios.
It also eliminates the confusion of having two different frontpanels active at the
same time. The open one or the sub-panel one!
They can be
At 09:12 -0800 01/30/2004, PJ M wrote:
Another strange thing (to me) is why don't I *automatically* get a subpanel refnum
when I create a subpanel (instead of that insert VI method) ?
Also, because of that, whatch out for these tranparent supanel with no scrollbar (it
is so easy to get more that
At 22:41 -0500 01/28/2004, Cat wrote:
I have a front panel with 1024 square-light boolean indicators (8 clusters of 4
clusters of 32 booleans, if that makes any sense). The purpose of this screen is to
visually alert the user if a sensor is overloaded. Each light represents one sensor.
The
At 13:48 -0600 01/27/2004, Seifert, George wrote:
Sorry if this has been discussed before but my search has come up empty. Is there any
way to communicate with a VI that's been opened in a subpanel? For instance can the
subVI respond to a control in the main VI? I don't see how to pass the
At 11:27 -0500 01/26/2004, Coradeschi, Tom [AMSRD-AAR-AIS-E] wrote:
You probably went to the County Line. And yes, there is stuff other than
pork on the menu: Beef (it's what's for dinner tonight).
There was a crowd of us in that car! And we went to the Salt Lick. There was beef
BBQ as well
At 11:47 -0500 01/26/2004, Jim Henry wrote:
All answers are here:
http://www.countyline.com/
Actually http://www.saltlickbbq.com/
Good thing it is Monday and we aren't supposed to be coherent or on topic.
in the same directory as newsub.vi
reopen toplevel.vi
Bingo, it will pickup the changed subVI everywhere it used to call sub.vi.
-Scott
--
Dr. Scott Hannahs, Head of User Research Instrumentation
http://sthmac.magnet.fsu.edu
National High Magnetic Field Laboratory
From the options list http://sthmac.magnet.fsu.edu/labview/LV_Options70.html there
is
an option called showInplaceMenuItem. Set this to true in your .ini file. Then
Launch the Labview application.
Then try Tools-Advanced-Show Buffer Allocations
This will give you a pop up window and you
At 13:18 -0800 01/15/2004, Jason Dunham wrote:
I'm using Linux (RH8) and trying to get a LabVIEW VI to run when the
system boots up.
I added a line to /etc/rc.local, but it doesn't seem to have an effect
The line was
/usr/local/lv70/labview /home/jason/myvi.vi
The computer already boots into a
At 14:25 -0600 01/16/2004, Scott Serlin wrote:
I do not have any controls to access in my vi state machine. As an
example, I control a piece of equipment that labview turns on, gets some
measurements, logs those measurements to a database, and then shuts
down. I do not access any front panel
At 09:57 -0500 01/07/2004, Chuck Lippmeier wrote:
Self explanatory
Chuck Lippmeier
Self-Explanatory thread:
http://messages.info-labview.org/2003/04/28/20.html
-Scott
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