Grampa_of_Oliva_n_Eden

Timing of this Q dicates I should mention that I wrote a Nugget on this last week.

http://forums.ni.com/ni/board/message?boar..._date_ascending

The included example may be of some use.

Ben

QUOTE(Mindstormer @ Aug 31 2007, 11:32 AM)

I dont exaclty understand how I should implement the template with the web publishing tool?And does the template need to be reentrant?

If I change the source of the webpage to the template. Then its the same, I test with Ip adres, and on 2 different computers the ip adres of the original is returned. The vi, the template was made from is reentrant otherwise only one user could as control at the same time. So the template approach isnt working im afraid .

So Im still looking how to get a reference to the cloning vi's

thanks already

I don't feel that I am serving you well.

In this nugget

http://forums.ni.com/ni/board/message?board.id=170&message.id=226491#M226491' target="_blank">http://forums.ni.com/ni/board/message?boar...=226491#M226491

I posted an example (see post #1) that shows you how to instaciate multiple instaces of a VIT.

Sorry about the lame replies. The Q will take time to answer and doing this while working is just not possible.

Ben

QUOTE(Mindstormer @ Aug 31 2007, 10:58 AM)

I tried this but the property from vi server "this vi" always references to the original vi. So how do I get the reference to the cloned vi's?

Before we get into that mess, could you try the template appraoch first?

The behaviour of reentrant VI's has changed with LV 8.X and I am not able to recite the rules off-hand.

Ben

QUOTE(Gary Rubin @ Aug 31 2007, 10:16 AM)

Maybe that goes along with the dyslexia thing? I don't know enough about dyslexia or neurology to know if dyslexia and language are related...

I know little more than what I have picked-up as a result of being dyslexic (Certified under the Americans with Disabilites Act "ADA").

The word "dyslexia" roughly translates as "does not understand letters" so it has a lot to do with text based languages. I was told when diagnosed that dyslexics often go undiagnosed and develop other coping skills to compensate. It takes many forms. In my case, the order of and orientaion of letters are jumbled. Yes I am one of those people who does not easily recognize the difference between the words "dog" and "god". The letters "A" and "V" are also troublesome.

This is one of the reasons I love LabVIEW. Letters are not required!

Text based languages were often frustrating to me because I simply could not "see" the syntax errors.

I have often thought that NI should market LV as the answer to dyslexics.

Ben

QUOTE(David Boyd @ Aug 31 2007, 09:10 AM)

I hadn't heard about the 'two versions' limitation for driver support - is this quoted anywhere? ...Dave

It would take some time to chase down the link on the NI forums, but yes it is sadly true.

The core LV version play well together. I thnks is was Urs or Albert that said they has LV 1-8 running on a Mac.

I can speak from personal experience that when the new drivers are installed, it goes through "obsolete" versions and removes support.

Tollkits are even worse!

You can only istall for one version. If it alredy installed for an eralier version, you have to remove it before you can install it for the new. When you install it for the new, it does not add support for the old.

There are ways to hack around that short-coming if you really want the toolkits installed for more than one version.

Ben

QUOTE(LV Punk @ Aug 31 2007, 09:20 AM)

Any basis to your theory based on the poll so far? Roughly 25% seems to be above average...

I suspected lefties tended toward the technical side. The poll so far does not contradict that theory.

The other theory was (but addressed by teh poll buy mentioned by others) that there is a higher proportion of engineers and scientists that are dyslexic than in the general population.

Ben

"_en"tropy hits LAVA.

http://forums.lavag.org/index.php?act=attach&type=post&id=6816

Ben

QUOTE(Mindstormer @ Aug 31 2007, 08:37 AM)

thanks for the reply

The problem is that I searched in labview and on the internet how to get these reference to each instance. But I didnt found it. So you can narrow down my problem to just finding the instance reference from a clone from a reentrant vi. And then I probably can use this reference with vi server to monitor the status of the button.

I never worked with templates so I also will look further how it works

Let the reentrant VI determines its own ref and pass it out via a queue etc.

Ben

BTW This thread is cross posted on NI

http://forums.ni.com/ni/board/message?board.id=170&message.id=268731&jump=true' target="_blank">http://forums.ni.com/ni/board/message?boar...1&jump=true

QUOTE(Hacti @ Aug 31 2007, 06:35 AM)

... a shared variable programmatically ...we are trying to transfer from 7.1 to 8.2 as easily as posible, without having to rewrite our whole program.

Thanks.

This does sound like a DSC app you are trying to upgrade.

To quote from Indiana Jones and the Temple of Doom "Hold on lady, we goin for a ride."

If so, "do not pass go, go directly to" datasockets. Only the most simple DSC constructs will mutate correctly. The URL's of the datasockets can be manipulated the way the old tag names could.

And if you are using alarming features, you may have to resort to reading values more than once to get the actual value.

If this is not a DSC app, disregard all of the above.

Ben

QUOTE(Mindstormer @ Aug 31 2007, 07:58 AM)

Ok, First I will explain what i want to achieve

I have a Reentrant vi and I published it with the web publishing tool. Now different clients can connect to it. To make it simple: on the vi is only a simple button. Now I want to know what the status of the button of every connected user/ip/client is. This information should be available at the server.

I added a reentrant vi with just one button.

thank you

I have not played with this recently...

I believe reeentrant instance have unique references. If you track the references from each instance this may help you.

Another approach is to use templates (VIT) were each instance gets a unique name when opened.

Otherwise you will have to develop you VI's to "drop their own bread crumbs" so you can follow that path back home.

Is thise the type of info you are after?

Ben

QUOTE(alfa @ Aug 30 2007, 04:22 AM)

...

F. Capra wrote ... the Old Testament from the Bible what is like Spirituality for dummies, ...

A quick read left me with that impression when I was young. After careful re-reading and analysis for the purposes of finding descrepencies (yes I was young and skeptical) I found that the subtle interdependancies and consistancy accross multiple authors blew me away.

Prior to that I had read the Tolkien Trilogy about a dozen times in an attempt to figure out who had all of the rings now.

What I found recorded in the OT made Tolkien look lame.

Yes there are some very basic concepts expressed in the OT. But there are some very advanced as well.

In fact it was this realization that allowed me to understand one of the proverbs that I remeber as " A wise man goes into his storehouse and brings forth treasures both old and new."

Ben

QUOTE(Justin Goeres @ Aug 29 2007, 08:37 AM)

Bizarre. Does that happen with all the new Instr property nodes you drop on the block diagram, too, or just that one (and maybe copies of it)?

This is slightly OT but is seems related.

I noticed durring some execution highlighting that a "To More Specific" node got highlighted with a border that gave me the impression the "To More..." was just a VI with a small icon.

I am wondering if the "To More ..." (and many other operations) are really being implemented with X-nodes, a LV version of slight-of-hand.

Ben

QUOTE(george seifert @ Aug 28 2007, 09:41 AM)

I know how to home a front panel using property nodes, but I was wondering if there's a way to do it while editing the front panel. Some special key combination maybe?

George

"ctrl-t" ?

Ben

QUOTE(Justin Goeres @ Aug 24 2007, 05:17 PM)

Linky? I searched before (and just now) but didn't come up with anything.

http://forums.lavag.org/Special-LabVIEW-ve....html&st=30

post# 38

It does not open in LV 8.2.1 but it looks like the axis sub-VI are still intact.

It'll take some work. The original code was just "sand-box" code.

http://forums.lavag.org/index.php?act=attach&type=post&id=2597

I found most of this missing VI's in

C:\Program Files\National Instruments\LabVIEW 8.2\vi.lib\picture\3D Picture ControlOld 3D Toolkit.llb

If you get a basic axis working could you post back?

Ben

QUOTE(Justin Goeres @ Aug 24 2007, 04:42 PM)

I'm finally getting around to using the 3d Picture Control for something "serious," and I feel like I'm running up against a bit of a learning curve. There are two things I'd like to do, and I feel like they should be easy:

(1) I would like to show a set of XYZ coordinate axes on my 3d Picture Control to show where {0,0,0} is, and which way the unit vectors point. Is there some way to do this easily, or do I have to build them out of 3d object primitives?

(2) I'm confused by the ModelView Matrix and Projection Matrix properties. What I would like to do is reset the camera view to a certain position when the user clicks a "Reset Camera" button. It seems like one of these should work (and I'm familiar with orthogonal transformations, thank you very much ), but I seem to be getting unexpected results.

Thanks!

I don't know if this will help but...

Back in the LV 3d thread I posted some code that was based on the public beta version of the 3-d picture.

It included axis (that I created using a cone for the arrow and a long thin cylinder for the axis).

If that code still opens in the new version ( don't know PC crashed lost the source) you maybe able to start with that.

At least the official relseas version has help on the VI's the public beta had no help at all!

Ben

QUOTE(PaulG. @ Aug 24 2007, 01:20 PM)

:thumbup:

I thought I was the only other LV programmer in the world who didn't cause other developers' heads to spin around and spit up green soup when I started playing around with the SDE. And I, too am looking forward to using the State Chart.

See my blog entry from Feb 28 2006 here

http://forums.lavag.org/blog/champions/index.php''>http://forums.lavag.org/blog/champions/index.php' target="_blank">http://forums.lavag.org/blog/champions/index.php?

entitled "Ode to a State Diagram"

Most of the developers I work with use the SDE even with its limitations.

If it really does get droped by NI, I'm going to start begging for the source code of the SDE to be released as open, unsupported code. That thing is so close to the perfect tool for staying out of the dirty little details while still writing LV code.

But I digress from the reason for this thread, sorry.

Ben

QUOTE(Aristos Queue @ Aug 24 2007, 11:21 AM)

Washington D.C. or the state of Washington?

We concider Washington DC part of our teritory so if you are in DC, checkout

DSAutomation.com

Ben

This is a cross post from the NI forum found here.

http://forums.ni.com/ni/board/message?boar...=266977#M266977

I hope someone on this forum can offer some ideas or advice.

Before I spend to much time re-inventing the wheel, I would like to hear your thoughts on how to measure the jitter in various comm protocols. To start, I'll get a couple of high end PXI Chassis and code in RT. I'll also get the best timer boards avaiable for both chasis. What I want to be able to do is to characterize the determinism of various comm methods. Specificly, I want to measure the "jitter" for each comm method under a variety of loads. The high end comm schemes (Reflective memory, Fibre Channel ) should have jitter on the order of microseconds or possilble nanoseconds. Out of the box ethernet on a dedicated network may be on the order of seconds. So..... If you have any ideas solutions or "show-stoppers" you would like to share, please feel frre to reply. I thank you for reading this post! Ben

QUOTE(PJM_labview @ Aug 23 2007, 08:43 PM)

Download VIPM and install this package ogrsc_rename_folder_of_vis.

This will install under your File menu a great utility to rename ("instanciate for your case") a folder of VIs. Check it out, you won't be disappointed!

PJM

Nice!

How can I knock an idea like that after i wrote a similar VI.

While mine alos does the cloning and adding a prefix it does not allow specifying an existing prefix. On the other hand, mine support morphing durring the cloning by which I mean it will replace all instances of one object (VI or ctl) while doing the morphing.

The trick to cloning (manually or programatically) is saving "from the bottom up" and therein lies the challenge of writing a cloner. For this work I used the "callers" and "callees" properties and reshuffled the list as indicated.

I will not post mine because it has a "face only a mother could love".

Nice PJM!

Ben

QUOTE(Michael_Aivaliotis @ Aug 24 2007, 12:23 AM)

That's Hot!

Great, now I have to put a request in at JKI for a new monitor...

Think, LabVIEW Olympics.

My days as a LabVIEW Champion may be numbered.

Ben

QUOTE(Mike Ashe @ Aug 23 2007, 10:18 PM)

They are both nice.

What do I use?

I have used and really like the the State Diagram Editor.

Yes I have to clean-up the messy code it creates.

Watching it in execution highlighting provides the functionality y'all have discussed plus it gives me the diagram so I can look back and forward.

Unfortunately for me, all bugs for the SDE have gone un-fixed and the State Chart is due to be released.

Since that spell the the death of the SDE, I have been madly reading about UML so I can use the new tool kit.

BTW: The SDE lets me remind myself how my code was structured (for that app I develed 3 years ago) when the customer calls and asks about a detail.

Ben

ASM - Anonymous Subscribe Messaging as defined in "FC-AE-ASM"

Anyone know where I can purchase off the shelf interface that support ASM?

The organizations we have contacted have either ignored us or simply refused to provide a bid.

Thank you,

Ben

QUOTE(i2dx @ Aug 23 2007, 01:35 PM)

I hope nobody will force me to use classes. Nobody forces a C Programmer to switch to C++! And IMHO it's a bad idea to force a programmer to use a specific feature. If that feature gives him an advantage (faster, better, cleaner code, etc ..) he will use it. That would be the only "force" I'd accept.

Besides:

I consider the first LVOOP features as a stepstone to a new programming language (maybe called G++ ?) which needs - accoording to the statement of Dr. T - at least 15 years for widespread addoption

That may be just enough time for me to complete the paradym shift.

Ben

A lot of the low-level details have been pushed into the hardware manuals because (guessing now) the dirty little details are very device specific.

Ben

QUOTE(shoneill @ Aug 23 2007, 11:46 AM)

Using THAT as a touchscreen would be a great workout!

Shane.

And I bet the older you get, the more sub-VI's you will use.

Ben