LAVA 1.0 Content

Just a thought...

If each tab was a sub-panel you could use User evnts and Action Engines to coordinates changes and the top level VI reduces to a sub-panel loader.

Done thinking!

Ben

If our dreams are the product of our brains and our brains are composed of elements that must adhere to quantum mech, doesn't that dictate that dreams have to adhere with quantum mech?

Yes I understand that at the macroscopic level the solutions of quantum mech become meaningless.

So if the answer is Yes, then we can also say the same thing about this thread?

Ben

PS: I may not be able to respond to your reply very soon. I have to stuff my brain back were its is supposed to be.

QUOTE(TobyD @ Dec 11 2007, 05:40 PM)

That reminds me of my favorite math joke:

What is the integral of 1/Cabin*d(Cabin)?

Ben

great ideas... such a shame that the developement will be discontinued !

http://video.google.com/videoplay?docid=84...07068&hl=en

QUOTE(Justin Goeres @ Dec 7 2007, 02:08 PM)

I wish LabVIEW would show the little (current size) popup in terms of elements in addition to pixels when resizing an array on the front panel or block diagram. The fact is that when I'm resizing an array I almost never care what size it is in pixels, especially given that the pixel size is constrained to a set of values relative to the sizes of the array elements anyway. I frequently care how many elements will be displayed.

E.g. (449,29 / 21 elements)

http://lavag.org/old_files/monthly_12_2007/post-2992-1197054324.png' target="_blank">

Yes that would be handy.

The work-around I use is to first set the index to size-1, set the array element, set index =0, and then re-size.

Your suggestion would eliminate those steps.

Ben

QUOTE(Neville D @ Dec 7 2007, 01:13 PM)

Hey everyone,

last post from me in a while..!! Off to sunny New Zealand for a month and then 3 days in Sydney after that!!!

Talk to you all in January (and for all our colleagues in the Northern hemisphere.. don't sprain your backs shoveling snow!)

:beer: :beer:

Neville.

A trip to New Zealand to see the locations where the Lord of the Ring Trilogy was filmed is about the only reason I would agree to get on a plane again.

Have fun!

Ben

QUOTE(alfa @ Dec 7 2007, 09:54 AM)

...

If you will try to look (analyze) at some "sensitive dreams" they will dissapear when you'll try to look at some details, exactly like the collapse of the wavefunction. It is like the interaction between observer and wavefunction.

...

Again I have to recomend The works of Carlos Costenada (sp?) of Don Juan (sp?) fame.

To become a wizard he had to be able to see his hands in his dreams.

His luminous beings idea fits right in with quantum mech.

Ben

I am not sure what you are trying to do so I'll take a wild guess.

Start with

Search examples >>> Browse >>> Programmatically Controlling VIs >>> Dynamically Loading and Calling VIs >>> Server - VIServer - Example.vi

Look at the other examples in that section also.

Ben

QUOTE(alfa @ Dec 6 2007, 04:47 AM)

Looking for Secrets in books is not a solution…

Not the best sort of statement for creating sales. How many have you sold?

http://www.lulu.com/content/180165' target="_blank">I AM CREATING GOD by Adrian Ferent

Books:

LabVIEW for Everyone 3rd Edition by Jeffery Travis and Jim Kring

The LabVIEW Style Book by Peter Blume

A Software Engineering Approach to LabVIEW by Conway and Watts

Web Sites and info:

LabVIEW Wiki

LabVIEW for Dummmiees

QUOTE(bono02 @ Dec 4 2007, 02:07 PM)

Thank you for your answer. I tried several times, but the motor only moved a bit.

I tried these steps (stepper motor) with absolute contouring: 1000 2000 3000 4000 5000

with velocity 137795 steps/rev equal to 13 RPS

I don't know why. I think this is the fastest speed of the motor, because if you increase

the speed the motor will not move anymore.

I read in the manual that "no consecutive points can differ by more than 2^15-1", and my steps

are just fine, and also it said that the data in-between two points will be spline-interpolated.

Is it possible to have a position (a b c d e..n) and then just by giving the time from a to n (with the velocity is derived automatically)?

Btw, about the maxon motor, are you using the API provided or you directly drive it using motion controller?

Here with me I have EPOS 70/10 and Maxon motor EC 45.

You have to make an array with points by yourself andyou should not change the updaterate of the contouring points to change the velocity...

The data inbetween two points are spline interpolatet, thats true. But this is not like a S-Curve move! So you will have big accelleration when you start a move with big velocity...

If you just send points 1000 2000 3000 4000 5000, then it tries to move always 1000 steps in the updaterate of the countouring points...

When you don't have a closed loop with your stepper motor, it is possible that you loose points...

In the contouring mode you can not just give a target position and a velocity. If you will do that you have to change to the absolute or relative position mode. Then you can enter the target, a velocity and start the move...and the S-Curve also work in this mode...

QUOTE(bono02 @ Dec 4 2007, 02:07 PM)

I use the API provided..

QUOTE(Jo-Jo @ Dec 5 2007, 11:53 PM)

So I've been working with the OpenGL stuff for about a year or so on and off, and I have become pretty proficient. There is one thing that I can't seem to figure out, however. I have been trying to control the camera using the setup camera method, and I can't figure out what the up direction is. I thought it described a (unit) vector that pointed out of the top of the camera, but I'm certain that this is not the case, although it seems to be the case sometimes, however in some positions the camera inverts itself. The help files on this method are not useful, which is pretty much the case for most of the OpenGL stuff, unfortunately. Does anyone know how to use this method?

~Jo-Jo

In Labview 8.2 (8.5) is the newer 3D toolbox

Here is the online help:

Here you find a video from a 3d object...

http://forums.lavag.org/index.php?showtopi...ost&p=20308

I believe you are correct for bits 0-7.

I created a simple VI with 10 terminals, an error in and an error out connected on the BD. As I moved the Error In input from terminal to terminal, the least significant bits changed in my Error Out flags to the index of the Error In flags in the array. As I changed the number of terminals, the number of bits increased as I placed the Error In at the top-left terminal of the pane.

When I used more than 12 terminals, the least significant bits went to zero. The only thing I changed was the number of terminals and I let LabVIEW automatically reassign the positions. I did not see any other flag bits change when using > 12 terminals.

QUOTE(Yen @ Dec 5 2007, 10:45 AM)

...

P.S. ... I thought you just wanted to get rid of it.

Ditto that!

Ben

QUOTE(Bab @ Dec 5 2007, 04:51 AM)

So you see how many thing you must modify in order to set the colors of one control the way you really want it. If you have many controls – maybe in a settings window with many tabs…

And if you have a rather large application with many Front Panels. It takes quite some time.

If no one know of a way, I guess I'll be able to automate the coloring of Booleans and Text-Class Objects at least.

Are you trying to make a UI where the operator can customize the colors on the fly, or are you trying to automate (script) changes while using the development environment? If you're doing this to speed up making changes in the development environment, consider creating strictly typdefed controls. It takes some up-front planning, but makes changes simpler later on. Place these as needed, then update the typdef once to change all instances.

If your application is going to run on more than one machine or be used by more than one or two operators, you may want to use system colors on your controls, indicators and backgrounds. The UI will then match the OS settings for colors and will behave like larger commercial based apps.

Just an idea...

Has MAX been opened since the update?

The "allow undefined" (actually the unchecked mode) option for VISA controls requires the system go find out what ports are leagal and which are not.

Yes, I'm just speculating.

Ben

I've heard of a Wikipedian Protesters. What can we expect now, Wikipedian gourmands?

Will "update while typing" and the "value Change?" event help? When the event fires look for the tab and if present, re-write control with the non-tab version.

Ben

REMINDER!!

Meeting is tomorrow.

Refreshments & snacks will be served.

Open discussion (everyone) after brief presentations

Thanks guys!

I saw an example, but didn't realize it was a new feature.

QUOTE(GY_cerege @ Nov 30 2007, 04:32 PM)

Bonjour,

Où puis-je trouver les sous vi IMAQ Write File2 et IMAQ Write PNG File2

Merci

Salut,

Si tu as le toolkit Vision, voici le chemin dans la palette de fonction :

I read your posts on Info-LabVIEW and I can understand your pain.

I recall reading this BLOG post by Brian Tyler made in February 2007. I immediately thought "What impact might this have on LabVIEW".

QUOTE(Yen @ Nov 29 2007, 12:26 PM)

...

You might get higher accuracy with a timed loop, but I'm not sure if it's supported on the cFP.

Yes it is supported but it is not any faster.

For fast signals I have used a counter timer module to measure the period.

It also sounds like the original questioner, is reading from all of the DI lines and not just one. If this is the case, either change the code to read only the single DI line or use an index array to pull out the channel of interest and then follow Yair advice.

Ben

I saw something interesting at the bottom of a LAVA WIKI page. Apparently you can close an array of references in one shot by passing the array (of references) directly to the Close Reference vi.

I tried it... but got a conflicting class error. Can anyone shed a bit of light on this?

Thanks!

RayR

yeah... I'm really looking forward to the usbbeer !

apparently the foam requires more bandwidth