Ton Plomp

They (tips and tricks) are aggregated on the LabVIEW Wiki.

Ton

I swear she's saying: "My titties are OK"

Oh, and I think that's a cameo by Jamie from Mythbusters.

Ome Henk, another fine example from the dutch music industry (along with 2 Unlimited), he used to be targeted at 10 year olds, I assume he just follows the aging of the same people.

No, it's definitly not Jamie. Or is it that small rear-shot you mean?

Ton

The Webservice escapes it's response so it's easy to parse (and you cannot interfere between data and communication layer. You can use RegExes to find the Value and unescapes it to use it with XML functions:

Ton

The Code Capture Tool 2.1.2 has the option to back-save the snippet in an earlier version.

Download it here (LAVA) or here (SourceForge).

Ton

Here's a is a limited API for TDMS in Linux, mac and RT.

Ton

This idea is not mine but I think it's great and everyone on the forums would benefit from it, please support it.

Create Snippets for Previous Version

Why would that be on the IE? They don't maintain the Code Capture Tool.

LabVIEW offers a built in option to create snippets. It's a very inflexible method to create snippets.

But I am working on the CCT functionality for this feature.

Ton

Help make Mercer and Nattinger unsad! Help improve Create SubVI! Vote now!

Allright I voted, however I think that NI should not only implement the easy ideas from the Idea Exchange.

Basically all the ideas implemented are 'low hanging fruit', I would be ashamed to name those new 'changes' as the major upgrade feature (as NI is currently doing).

Ton

One thing to remember are the 'arrow up ' and 'arrow down' keys.

(oops, you didn't tell your users. Now they know.)

I always try to be the first time when a new user / program is activated. The human brain is very inventive how to solve an issue.

Source

Ton

I think you'd have transformation is you went, for example, from U8 to U16 (padding)

What would be the effect (on the data) of transformation. I guess nothing:

Ton

Hi all,

I am using LV 8.6. I have some VI's in 8.2 and also in previous versions.

When I open the reference of those VI's in 8.6 and close, it pop up for Save. Is there any possibility to handle it during Run time?

I want to do it during Run time..

Thanks in advance,.

Suresh Kumar

That should not happen unless you have the options for the Open VI Reference Function set to 0x04. here's a quote from the help on that value:

0x04 Prompt user to save changes when this VI reference closes if all the following conditions are true:

The referenced VI or its subVIs contain unsaved changes.

There are no other open references to the referenced VI.

The referenced VI is able to leave memory. A VI is able to leave memory, for example, if no other VIs call the VI, the front panel of the VI is closed, and the VI is not a member of an open project library, and so on.

Ton

Ton P

Your format date message arrived after I had posted the above example showing how parsing is done now. I could not figure out a way to scan using your date specifiers. Any help will be greatly appreciated

Add a '%d - ' before the previous format string, to get two outputs: one with the number, and one with the timestamp.

Ton

Yes, I thought about that, but how about when the abbrev for month name changes from say Jul to a Aug? Or perhaps are you suggesting catching the scan error and incrementing the month name until no error is encountered?

Regards

Anthony

Here's the formatter for the time format. %b will match the abbreviated month name, this string is locale dependent on dutch system May isn't recognized but Mei is. So if your locale settings is different than the file format you will have a problem.

Another option is to replace every month string with a number (Jan -> 1)

EDIT:

the following code will get the date: %<%d%b%y>T expand it to get the time as well.

Ton

Not really sharing, but you can use the Boolean XControl to load images from disk into a running boolean.

Ton

Hi:

I am passing the array into a for Loop and then parsing the 3rd element to get the 3 characters for month #, I then convert the date and time into LabVIEW time.

Performance is really important because the array I work with has 50,000+ element. The sad thing is that this data is read from a text file in < than 2 seconds and thereafter a large chunk of time is used to convert that date string column into a calender number that can be computed.

Regards

Anthony L.

You can use scan from string to get your data as a timestamp.

Ton

Thanks.Do you have a sample to send me?

Hi Farid,

do you have any code where we can expand on?

Ton

This was really useful when I was building an app as an ActiveX server, and I wanted to call a VI within the app remotely using the VI server.

Could you at this info to the LabVIEW wiki?

Ton

Change your settings as shown in image.

Thanks for pointing that!

Don't know how that changed.

Ton

Since the RSS-feed only posts the first message of each thread, I have been relying on the View Unread Content as my feed.

However since last weekend the start date is being reset upon each visit to this page.

That screenshot is from this morning, and shows only the posts of the last night. I left yesterday without readins all the messages, now I have to digg through each forum to get all the messages.

Please fix the RSS-feed.

Ton

CCT's "auto-save in the temp directory and copy the path to the clipboard" feature is probably the best feature I've ever encountered that I didn't know I wanted.)

How about:

"auto-save in the temp directory, upload to a webservice and post the URL of the image to the clipboard" function?

Ton

If you were willing to store your friended item in user.lib while it's being written, then when the friending library is saved I'd expect it to store the path '<user.lib>/foo/MyThing.lvlib'. When you deploy your value-added component, it would land in <user.lib> and everything should connect up fine without a crossload dialog, right?

That sounds like what I tried to do:

<user.lib>\a.lvlib is the main lvlib it has two friends:

1. <user.lib>\b.lvlib
2. c:\mydocs\bt.lvlib

I develop my code in bt.lvlib, and I tried to use the standard NI Source Distribution method, to rename c:\mydocs\bt.lvlib into c:\mydocs\built\b.lvlib, this however fails since 'the item is allready in memory', (note that a.lvlib is being used throught my code in LabVIEW tools that run in the background during development, but I have a feeling this is not the cause, could I have discovered a bug?). So this basically rules out using friendship for my in this case.

If you write some kind of friended command-broker kind of VI that gets distributed with your library and accepts commands which it forwards to the rest of the library, you could require that commands passed to the broker also include some kind of password. You could lock the broker and add-on clients of the broker, and that would be roughly as secure as the friendship validation scheme already in place (the validation scheme already in place is good, but not professional-caliber-cryptography secure).

That sounds like a gateway and is certainly valid, but a little bit too complicated for this case.

Ton

I don't think we need a tight naming scheme. I think we need an on-topic naming scheme together with some categories and tags.

A guidance might be the Linux development, if you look at the Ubuntu packages set, you see there is a limited list of categories, and I believe a package can fit in two categories.

When doing a search, one just types in what comes to mind 'source control', now the package manager searches through the available packages and returns a sorted list of packages. These can be filtered upon categories. I think there are several ways of sorting, but the first is:

• Popularity
  With VIPM we can use the internet connection to have a database where the popularity of packages is traced. A system would be '+1' for each install '+2' for each package that is installed after 4 weeks. '-1' for each uninstall. This data can be anonymized, or only kept local in the current repository.
• Relevance
  Relevance can be calculated upon, does the search term comes up in the packag name, tag-list or description
• Code standard
• Paid
• Open source
• License

I think the default sort should be 'Popularity', which can be influenced by 'Relevance' (for instance a popularity score with 80, but relevance 5, could be below pop=30, relevance=95).

Ton

You can use the 'Value Change' event to detect if an item is selected.

What kind of events do you want to create?

Ton

3. The .NET VIs run in their own application instance that has no persistence between calls.

Is it possible to load a functional global that keeps the ' application' alive?

Ton

BTW. No problems changing the icon back again?

No, the WM_Seticon returns a handle with the old icon.

You can drop this VI:

SetWindowIcon.vi

To set or Reset the icon of a front panel vi!

Here's some little demo code:

That sets and resets the icon of a FP window.

Note that if you don't reset the icon it will be in memory until the FP window is closed.

Can anybody tell me how the code runs on:

LabVIEW 32 on Windows64-bit

LabVIEW 64 on Windows64-bit

EDIT: Fixed VI to manage multiple windows

Ton

Change the "uType " to "1" (icon) instead of "0" (bitmap) and load an ".ico" file.

Yes that definitly works!

Thanks for correcting me.

Now comes the bonus question:

Mac

Linux

Ton