Auto position buttons under array on front panel

In my gui I have an array of clusters that I am auto-sizing based on number of rows property node. I have a delete and ok button under the indicator for the array and would like to position the buttons at the bottom of the array. The easy solution is to put the buttons to the side of the array, but I'd like to make this look nice and have them appear at the bottom of the array no matter how many rows are displayed. Any suggestions?
I've looked into position property nodes which give the option of top and left, and wanted to calculate the bottom from the height, but haven't figured out how to do this.

Not sure what the difficulty you're having is. The Height property gives you the height of the array, in pixels. Perhaps you're having a race condition. I'd suggest posting your code.
Of course, one issue is: what happens if the array is set to display so many rows that it extends beyond the size of the panel's window height?
In general, I'm not a fan of user interfaces where buttons start moving on me.

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Fix position of 3D graph in front panel

Hi I haev used 3D graphs in my VI but whenever I open my vi I see that the position of 3D graph has changed in my Front Panel and it takes a lot of time to rearange everything again. It also change the position of the other things like pics or Tab boxes. Is it something related to the resolution of the screen? and how can I fix it to not change because I want to use my laptop for a presentation and I would like to avoid this mess during demostrating my vi
Many thanks

Hi,
I don't know if it would help, but you can lock the psoition of front panel objects. Select the object and then select Reorder >> Lock from the toolbar:
-CC
"If anyone needs me, I'll be in the Angry Dome!"

Why does Auto Tone button in Quick Develop panel fail with Win 7 platform?

I have been a user of Photoshop since the inception of Photoshop CS. I recently purchased a subscription to Photoshop CC, which comes with Photoshop Lightroom 5.
I have never used Lightroom, so I purchased the Kindle version of Adobe Photoshop Lightroom 5, CLASSROOM IN A BOOK. I have this eBook installed on the same Windows 7 PC that I have Photoshop CC and Lightroom 5 installed on.
I ran into a problem in a section of the first chapter titled “Using Quick Develop in the Library module.” This section, in part, instructs how to quickly improve the color tonal balance of an image.
After selecting the required image from the sample images for this lesson, I found the histogram in my Lightroom 5 Loupe view to be the same as the lesson’s photo illustration for this original image. As described in the lesson, the photo did not have a balanced tonal distribution.
I followed the lesson’s instruction: “4. In the Quick Develop panel, watch the tone distribution curve shift in the Histogram panel as you click the Auto Tone button. Although the automatic adjustment hasn’t done a perfect job with this particular photo, there is substantial improvement; a lot of image detail has been recovered from the overexposed hair and face and there is more depth in the mid-tones. The contrast, however, remains unimpressive, and the darker areas still look flat.” (See Adobe Creative Team [2013-08-06]. Adobe Photoshop Lightroom 5: Classroom in a Book [Kindle Locations 1024-1026]. Pearson Education. Kindle Edition.)
This is where I ran into a problem. After clicking on the Auto Tone Button in the Quick Develop panel, my results were completely different than what was described and shown in the Histogram displayed in the lesson. Instead, in my Lightroom 5, clicking the Lightroom Auto Tone button has increased the exposure, making it even more over exposed than the original image! Therefore continuing to follow the instructions in the lesson was a waste of time, since my Auto Tone results were so totally out of sync from that of the lesson.
This disturbed me, so I decided to open the same sample image in Photoshop CC, Camera RAW 8.2. Camera RAW provides an Auto Button which improves exposure and color tonal balance to an image. The results were exactly the same as the Auto Tone functionality in the Quick Develop panel in Lightroom 5. I couldn't understand why the lesson instructor's results were so positive and mine were so disastrous. Then it hit me! I discovered that the lesson writer of this Adobe Classroom in a Book was using Lightroom 5 on a MAC computer. I could tell by looking at his lesson images. Just to be sure, I tried this lesson scenario on a different PC with Win 7, Photoshop CC and Lightroom 5. I got the same failed results.
I’ve heard from other professionals that Photoshop and Lightroom software only work properly on Apple computers. I’ve always thought that this was a myth, but have infrequently experienced a good result using the Auto button feature in Photoshop Camera Raw on a Windows PC platform, so I don’t use it often.
What really has me frustrated is the fact that Adobe no longer has a direct way to report software defects to their tech support or process improvement teams. Their online bug reporting process is woefully inadequate. I've tried twice to create a support ticket on the Adobe site, only to have my case withdrawn mysteriously. I've tried their online chat, telephone support, and sent emails with image attachments to the address provided by their agent on the telephone. My email goes unanswered and my open cases somehow get closed.
Any ideas on how to get this issue addressed by Adobe are sincerely appreciated.

Adobe tries to improve the Auto Tone function from time-to-time. I used to completely underexpose an image that had a few bright spots such as car headlights turned on in an otherwise properly exposed image. This is probably what you’re seeing, LR now guessing brighter more of the time, and it might change, again, in a future version so don’t be too concerned.
As others have said, Auto Tone works on some images and not on others, and Adobe can only try to make it work better on more images by changing how it works on all images. For the lesson example, the author purposely used an image that was improved with auto-tone that LR did at the time of authorship. You will never have a picture exactly like the lesson’s example, either, so it’s not that important if the lesson is 100% accurate for future versions of LR, just that the general idea that some pictures are improved in certain ways by Auto Tone will still be applicable, and you’ll need to learn, by trial and error, what to do when Auto Tone doesn’t work well or the image needs further adjustment. That is the important lesson, what to do with your own pictures.
You can reset a particular slider after a bad Auto Tone by double clicking on that slider. The Exposure slider is the one I reset most often.
You can also LR set the Auto Tone value for just one slider by holding down the Shift key and double clicking on that one slider. I do this a lot for the Blacks slider to set the black point, without messing up everything else.

Is it possible to run the vi with a button on the front panel?

Hi to all,
I was wondering if it is possible to run a vi with a button placed on the front panel.
Regards,
Palazzo

Palazzo wrote:
Run vi when opened is not useful in my application, I know that option, thanks.
Can you elaborate? Programmed as a proper state machine, have the program run in an idle state that only waits for for a button press.
There is no need ever to go to edit mode during execution of a finished program.
while I have written a demo Xcontrol to show that everything is possible, I strongly recommend against it. It makes no sense.
See here for the example and instructions. But please read the entire thread, though.
LabVIEW Champion . Do more with less code and in less time .

IPOD Mini front panel buttons not functioning

First of all, thanks for reading my message.
I have this wierd problem. My front panel buttons namely Menu, forward, rewind, play/pause and wheel donot work.
The thing that is wierd is that my ipod is still functional using the remote. Even when I am playing MP3s using remote, those regular buttons dont function. They look like they are dead, no response what so ever.
Since the remote has limited buttons I want my front panel buttons to work. Any inputs on this regard is appretiated.
P4 Windows XP

More details:
I can charge my IPOD.
sync it to itunes.
Hold works.
ear phone jack works.
In all my IPOD is in a state similar to what you have when you switch to "HOLD". Irespective of whether I swith the hold button or not.
P4 Windows XP

How to show the front panel when launching VI with Call by reference node??

Hello!
I just wonder how I make the front panel visible during execution when I launch the VI with CALL BY REFERENCE NODE.
Se example.
Could u also show me how to change different properties (window size ..) of the front panel??? (launched with CALL BY REFERENCE NODE)
Thank you!
Attachments:
test.vi ‏18 KB

In VI Properties>>Window Apperance>>Customize you can check "Show front panel when called". This will open the front panel on each call. It doesn't matter how the call was initiated.
You can set a lot of Front panel properties during runtime. Place a Property Node in the block diagram. Change the class from App to VI. Under properties select Front Panel window>>Panel bounds to set the position and size of the front panel.
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions

It is possible to open the front panel of a subVI more then one time at the same moment?

I want to open a subvi´s front panel several times with each one operating independently. The subvi has a ring with several variables to choose to show in a graphic. The subvi is called from a button on the Main Front Panel. It is possible to, for instance, open the subvi and set it to show a temperature graphic and click again on the button to call another instance of the same subvi and select pressure for the graphic, keeping both new windows side by side? Will I still be able to access the Main Front Panel?

Yes you can. You have to use a .vit (VI template file). There's an example here. There's also been lot's of discussion on the subject. I think if you do a search for vit, you'll be able to find additional information and examples.

Remote Front Panel Problem

Hi
I am using a TAB control in a VI that is published as Remote Frontpanel.
When changing TAB the controls are often grayed out in the browser even when they are not in the running LabVIEW VI !
A Combo box may also contain the apps default values instead of the values from the running VI !
Any hints to solve this ?
I have login/logout in my application, and i need to auto logout when the last Remote Front Panel User disconnects.
How do I detect that there is no listeners/clients ?
The "connection manager.vi" is password protected, so i can't get any hints from there !
Best Regards
Teddy

I see thank you. Very funny because i thought i had to do something with duplicating the real time target.
So regarding the above problem, is there any way to be connected remotely to the target and when the link is broken to reconnect without affecting the operation of the VI running?
For example, lets assume we connect to a remote front panel which has a simple VI with just a 1 second period timed loop running and for each iteration of the loop i monitor and i save the index of the loop. When i connect to the VI i request control and i click run. The VI starts running. After one minute, at loop iteration 60 the link between the host and the target breaks. The VI should continue running.
After 1 minute of broken link the network is again available.
What can i do to re-establish connection without affecting the VI operation and continue monitoring the VI. If reconnecting after 1 minute i will be expecting to see the loop iteration to be 120 and keep running. Is there any way to do this?

Can not open front panel sub VI when running an application VI.

When I create an application of my program a problem occurs. When I select options (press a button or so) from the main front panel that should result in a popup menu (sub VI cal) LabVIEW indicates that something is happening but the front panel does not open. The mouse indicator changes to the time glass so LabVIEW is doing something but the window of the sub VI does not open.
The problem has the same characteristics on several places. There are some sub VI front panels that opens but I ca not find the reason for why these open and not other.

Hi
there are three ways trhough which you can force a subVI to show its front panel
1. open the perticular SUB VI
click File->VI properties select window appearence catagory.
click customize button and select "Show Front Panel when called" and "close afterwads if originally closed" check boxes
save the VI
whenever you use this Sub VI every time it will pop up front panel
2. dont perform the changes suggested in option 1. place the instance of subVI in your main application and if you want that instance to popup a front panel then right click on subVI and Select "SubVI Node Setup" again select "Show Front Panel when called" and "close afterwads if originally closed" check boxes
with this option only certain instances of SUB VI will cause pop up to occur
3. this is the most flexible option. use invoke node to show front panel. in invoke node select show front panel method to popup the VI and use close front panel method to close the pop up window.
Tushar Jambhekar
[email protected]
Jambhekar Automation Solutions
LabVIEW Consultancy, LabVIEW Training
Rent a LabVIEW Developer, My Blog

I am having trouble stopping a sub VI from the front panel of my main VI.

Whenever I try to stop my sub VI from the main panel i cannot get it to work. It has entered the value of the switch from the main VI and does not update it within the sub VI after it has started the sub VI and hence does not look for a changed value on the switch. Is there any way that I can get the sub VI to check the state of the switch on the Main VI on each loop?
Thanks
Ross H

Hi,
I am including 3 VI programs, here main vi controls the sub vi, i mean sub vi can be stopped either from main vi or from stop button put on its front panel. Also main vi still works incase sub vi is running.
Hope it works. If above does not answer your problem completely, Pl. do write.
Best Regards,
Nirmal Sharma
India
Attachments:
Main_Vi.vi ‏56 KB
sub_vi.vi ‏25 KB
global_stop.vi ‏6 KB

Labview front panel

dear sir,
sir i did a program for serial communication in labview to communicate with the embedded system and it is working now...
and my question???????
i need to display message from embedded system in one window of the front panel and i need to display parameter (baud rate, start bit, stop bit,etc...)in another front panel ... and this parameter front panel window should open only when i click button in the message front panel window when i require to change parameter..... can you explain how with some example

Hi steps,
Also you can try going through this link. Download the attachments(Main and sub vi) from the post and understand how to activate multiple front panels. You can do it by creating seperate vis with the required parameters and calling them as SubVIs. Also check how the values are passed between these vis through the connector pane terminals.
Regards,
Nitzz
(Give Kudos to good Answers and Mark it as a Solution if your problem is Solved)

Keeping Front Panel Position the same at runtime

There has been some threads on here that say to set the Pane.Origin to 0,0 and that will set your front panel position to 0,0 every time you run. I can't seem to get this to work. I created a property node under GObject.Origin. Then I tied a constant to the input and a constant to the reference. I keep getting an error about the reference. Any advise? Maybe another way to do it? I'm probably just doing something wrong.
What I am trying to accomplish is when I am developing on the front panel and moving things around, I want the front panel to always run from the same position when I go to runtime. I have tons of buttons that border the edge of the bottom of the screen and so they get covered up if I don't set the front panel back perfectly. I am not using the scroll bars and the title menu is completely gone. All that the user sees is the front panel that I have created.
Thanks.
Solved!
Go to Solution.

I believe you need to obtain a reference to the pane starting from a "this VI" and working your way down the hierarchy, like this:
This sets the origin on the first pane. If you have more, you can put the last property node in an array and remove the index array node.
(edit: note that the second property on the VI PN is a typo)
This is a common thing to want to do at run time, but some of the other things you mention are a little suspect. Why do you have "tons" of buttons off-edge? There are a number of ways the user could accidentally see those despite your efforts to keep them hidden. What function do they serve if they are GUI elements but excluded from the GUI?
Message Edited by blawson on 04-21-2010 02:02 PM
-Barrett
CLD

Dynamic cluster/array follow up question - front panel

Thanks for the responses to my last question - they were great and fast!
I'm still stumped on how to create the front panel. It doesn't really matter whether it is an array or cluster. It sounds like either way, once I have it I can autoindex through it. The basic application here is that I have a VI that will store one XY plot to our database. I'd like to wrap that in a VI that will take N XY plots and store them all in our database regardless of what N actually is. So in terms of creating the front panel, I tried to create an array control and drop a XY graph in it, but it doesn't seem to like that. It said that I hadn't added an element to the array. I also tried to drop a XY graph into a cluster control and that cleared the broken run arrow, but wouldn't I have to know how many XY graphs are being passed in? It seems like I'd have to put one graph in the cluster control for each graph coming which defeats my purpose? Remember I won't know how many XY graphs are coming into my VI in the array or cluster. Anybody know how I can set up the front panel?
Again thanks for the quick replies!!!
Best Regards,
Steve

Look at the attached VI.
It has a single XY graph inside a cluster container, and that is inside an array container.
With this setup, it wouldn't matter how many graphs you pass to the subVI since it's an array, it will take whatever is passed to it.
Ed
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:
XY Graph in Array.vi ‏13 KB

Is there a way to create a button on the front panel that would automatically open the txt file data is being stored to?

I am saving data read from FieldPoint to a .txt file. Is there a way to create a button on the front panel so that when the user pushes this button it automatically opens the .txt folder in notepad? I want to bypass the user having to find the file in the computer in order to open it.

Hi jem,
I suggest that you break this up into three seperate questions and re-post to this list. That way you get more ideas from others that may have better insites than myself.
Re:the sysexec
The Sysexec will allow you to execute a dos command. This is the equivalent of going to
Start>>>Run
What you should do is find the proper DOS command sysntax that is required to open a text file in notepad or your favorite editor. Once you know what a good DOS command is, you should pass that string to the Sysexec.VI. The Sysexec has an input that allows you to choose if the code waits for the command to complete or if it should just start the program and let it run in the background. Sysexec will open its own window to run the command you speci
fiy.
Ben
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Can I have an array of controls without having them in the array front panel holder?

I would like to link a number of boolean control buttons in an array without grouping them on the front panel the way it does when you make an array and then put in a boolean control.
Here's the background:
I have 8 linear motors controlled by CANbus, and so each button type (Move, Stop, Home, etc) is duplicated 8 fold. I have an event structure that is currently triggered with a separate case for EVERY button with only a very small difference in the code inside each case. Ideally I could have the buttons in arrays and then check the new array value against the old value on a value change event. The alternative for me is to have each case handle the 8 buttons (with a Mouse Down? filter event) and then use the Boolean.Text value from the CtlRef and search an array of all Boolean.Text Values for the 8 buttons to see which name matches and process accordingly. I have something like 200 buttons, so making the arrays of Boolean.Text values from the reference nodes is WAY too time consuming as I have to go through like 5 levels of right click menus. Any suggestions?

Mark,
You might consider using clusters on the front panel. Create a type def'd cluster that has all the boolean controls for 1 channel. You can drop 8 of these on the front panel and the event structure can detect a change in a cluster. Easy to convert cluster to array behind the scenes. Remember that order of cluster determines index of value in array.
Message Edited by Wayne.C on 04-09-2010 05:19 PM

Auto position buttons under array on front panel

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