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4 Kudos
AdarshaPakala

In-built features in LabVIEW Graph

Status: New Submitted by Member on 07-30-2021 10:13 AM 1 Comment

It would be a great add-on if the graphs have got in-built measurement features/properties/methods like an oscilloscope;

 

AdarshaPakala_0-1627657945371.png

 

  1. Trigger
  2. Basic arithmetic function like Ch1-Ch2, Ch1/Ch4, etc.
  3. Event trigger based on plot value change. Example an event will be generated if Ch1 value is greater than a set value, an event will be generated if Ch2 value is greater than Ch4 value
  4. In built average plots. Example add plots like 10SMA(Ch3), 30EMA(Ch1) etc.
  5. Threshold based graph visual property change. Example configurable out-of-threshold or in-threshold plot color change.

 

 

Advantages;

  • Save time in development.
  • Integrated code will be efficient as no data unbuild/build/pass overheads.
  • Block diagram would be neat and easily readable.
  • Lightweight code.

 

Thank You

Adarsh

LabVIEW from 2006

CLA from 2014

20 Kudos
jj2

In range and coerce should have additional polymorphic functionality like accept tolerance

Status: New Submitted by on 06-29-2015 11:52 AM 2 Comment

Should be able to specify tolerance instead of just upper and lower limits. This de clutters the application block diagram when you are checking for a value within certain limits.

 

 . Upper limit becomes : x+ tolerance, Lower Limite becomes : x - tolerance when using tolerance instance of the polymorphic vi.

 

For even higher level functionality , specify units of tolerance : absolute, percent(1e-2), parts per million (1e-6), parts per billion (1e-9)

5 Kudos
patibandla

shift register loop tunnel connection issue

Status: New Submitted by Member on 09-11-2020 07:51 AM 6 Comment

Problem:

in many cases after wiring in the loop , we will go for the shift register to store variable. but in case of changing the loop tunnel to shift register left side tunnel required to connect manually.if not it creates the another tunnel in the loop.

 

solution:

in the loop , if the left and right tunnel variable are same , LabVIEW automatically replace tunnels with the shift registers.

 

shift registers.JPG

 

 

39 Kudos
RavensFan

Round towards Zero Primitive

Status: New Submitted by Knight of NI Knight of NI on 01-19-2010 03:48 PM 3 Comment

We have a Round towards -Infinity  (3.8 becomes 3,  -3.8 becomes -4)

We have a Round towards +Infinity (3.2 becomes 4, -3.2 becomes 3)

We have a Round to Nearest (Rounds up or down to nearest integer, if 0.5, banker's rounding to even integer)

 

Why is there no Round towards Zero?  Basically a truncate.  (3.2 becomes 3, -3.2 becomes -3)

I have a use for that right now, but it takes several primitives to work. 

 

As a corollary, a Round Away from Zero.  (3.2 becomes 4, -3.2 becomes -4)

 

 

Message Edited by Ravens Fan on 01-19-2010 04:53 PM
33 Kudos
altenbach

Add "Akima Spline" option to the existing interpolation functions

Status: New Submitted by Knight of NI Knight of NI on 06-03-2011 10:19 AM 7 Comment

(A while ago I suggested to post this idea, but it has not happened so I do it. :D)

 

The Akima Spline (For example explained here) seems to have some desirable features compared to all the interpolation and fitting algorithms available. It should be added to the LabVIEW functions, at least to interpolate 1D. 

4 Kudos
varshinee97

Saving all the event logs to file in event inspector window

Status: New Submitted by Member on 02-11-2021 03:31 AM 1 Comment

I would be easier if Save all the logs to file option is provided. 

Proposed Event Inspector WindowProposed Event Inspector Window

Actual Event Inspector WindowActual Event Inspector Window

 

  

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31 Kudos
jdunham

Include the constant "Tau", the circle constant

Status: New Submitted by Member on 06-28-2011 06:10 PM 41 Comment

Please add the circle constant tau, to the Math & Scientific Constants palette.  Happy Tau day!  (see more at http://tauday.com/)

 

Tau Constant

30 Kudos
Lavezza

Support new floating point formats in IEEE 754-2008

Status: New Submitted by Active Participant on 10-02-2011 02:15 AM 6 Comment

The updated to IEEE 754 adds a half-float and a platform independent quad float. We have a project where a data source will be giving us values in half floats (16-bit). It would also be nice to support quad floats (128-bit) since the current EXT datatype is platform dependent.

34 Kudos
Henrik_Volkers

Format into string with thousands separator

Status: New Submitted by Trusted Enthusiast on 05-10-2010 10:05 AM 3 Comment

I need a format into string that is capable to format numeric with thousands separators.

Like this  (Visual Aides - Numeric Separators) idea but also for the conversion and scan functions.

 

Looking at the syntax

 

%[$][-][+][#][^][0][Width][.Precision || _SignificantDigits][{Unit}][<Embedded information>]Conversion Code

 

 

the  <Embedded information>  currently used only for time formats would be ideal to extend to a more general form. 

 

Something like <+ nnn nnn.ddd ddd> would be nice 🙂 ( the d is already occupied ... # or whatever .... maybe similar to the excel format syntax or maybe there is a (better) standard??? )

 

Currently I use the attached vi to add the separators, however it would be nice to have it in a general form 

 

 

 

25 Kudos
Aaron_KZ

XY chart

Status: New Submitted by Member on 06-26-2012 10:09 AM 9 Comment

I would like to have an XY Chart that has the same functionality as the Waveform Chart, but with x and y inputs instead of just the y.  The XY Graph is not efficient to be used inside of a loop, mainly because it redraws the plots each iteration, and I've had a hard time trying to make a buffer that is as efficient as the waveform chart.  The Waveform Chart does not allow you to define the x-axis as anything that is not an interval.  For example, I might want to plot pressure vs. flow rate.  Many customers also request the ability to change the sampling rate during an experiment.  this would be much easier to handle with an XY Chart.

It would also be nice to have the buffer size included in a property node.

It would also be nice to have the ability to change the size of the graph palette.

It would also be nice to have the nearest plot coordinates (x and y values), or interpolated values, to mouse movements over the plot area as a "visible item" in the shortcut menu (this should show a dot over the plot's trace)...  I've done this with an X Control, but I'd like the ability built into the new XY Chart on a lower level to improve effiecency.

 

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35 Kudos
jdunham

PlusAndMinus function

Status: New Submitted by Member on 06-01-2009 02:49 PM 5 Comment

Having a native polymorphic PlusAndMinus function would clean up so many of my diagrams.  Anything where you are programmatically resizing and centering front panel objects or objects in the picture control toolkit would benefit the most, but there are plenty of other uses.

 PlusAndMinus.png

23 Kudos
mark.campanelli

Python

Status: New Submitted by Member on 01-09-2013 12:21 PM 4 Comment

It would be great if LabVIEW supported the Python language, including any of its various packages such as numpy. Such computations would be much more transparent and easier to support than calling code in DLLs. They would also be much more open and flexible than the existing built-in computational solutions in LabVIEW, e.g., expression/formula nodes. Currently, I have to call Python scripts via System Exec.vi, which complicates data exchange. (NOTE: I am using an older version of LabVIEW: 2009 SP1.)

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29 Kudos
sth

PID Toolkit installer for all platforms....

Status: New Submitted by Trusted Enthusiast Trusted Enthusiast on 02-17-2011 01:22 PM 11 Comment

From an AE:

 

I confirmed with the Product Support Engineer for the PID Toolkit that the toolkit does not officially support the Mac OS X and therefore, we do not have an installer available for it. However, she also did mention that the PID Toolkit is created using LabVIEW code, so it is possible that you would be able to open VIs that come with the PID Toolkit in the Mac OS. I can submit a product suggestion for you to request Mac OS support for the PID Toolkit in the next release.

 

So here is the product suggestion. NI has gone to the trouble of building a cross platform set of VIs for PID and then stumbled in merely packaging it. Just build an installer.

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24 Kudos
heiner1

TDMS function to delete channels and groups

Status: Completed Submitted by Member on 12-02-2011 08:50 AM 6 Comment

It would be nice to have an VI to delete groups and channels in .tdms files with all data belonging to the channel and group.

 

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27 Kudos
donkdonk

Allow booleans for array indexing

Status: New Submitted by Member on 11-12-2010 02:19 AM 7 Comment

Allow boolean for indexing.

This way a quick array selection can be made without the need for building loops.

(for those familiar to matlab: matlab indexes like this)

 

 

 

Boolean indexing.PNG

21 Kudos
Norbert_B

Link VI Analyzer to NI Requirements Gateway

Status: New Submitted by Proven Zealot on 12-03-2012 10:35 AM Comment

Hi,

 

for a complete validation of a software, it is mandatory to perform tests. When testing, we differ between two major tasks:

- static code analysis

- dynamic code analysis

 

For static code analysis, we got the VI Analyzer toolkit. It automates the task of looking into the sources (front panel and block diagram) and compare the current layout against recommended layout (style guide). Additionally, it detects known sources of issues for lack in performance or even crashes and misbehavior during runtime.

 

So it makes perfect sense, to define requirements that static code analysis has to be performed before proceeding to dynamic (runtime) code analysis.

Yet, VI Analyzer tasks have no option for creating such a link as a field "comment" or "description" is missing for the configuration!

 

I suggest to add such a field in the cfg-file level (exported VI Analyzer configuration) where we can add strings like [Covers: <req_ID>] as we are used to in LV code.

 

Norbert

30 Kudos
CanadaGuy

3D Plot Should Not Plot NaN as Zero

Status: New Submitted by Member on 10-23-2009 03:13 PM 3 Comment

When producing a 3D plot with an array containing NaN values, the plot should not interpret these as zero. Rather, these points should be disregarded so that the black lines do not appear. Given the way Labview handles arrays, there is no way to remove these elements given the way that the data is generated and as such it must be left up to the plotting algorithm.

 

3d plot NaN.PNG

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16 Kudos
PCorcs_DMC

In Place Auto Indexing

Status: New Submitted by Member on 08-06-2014 01:39 PM 14 Comment

Hello LabVIEW Users,

 

While working with a complex configuration application, I found myself heavily utilizing in place operations. Throughout the process of contstructing the code, I found myself commonly having to create an In Place Indexing structure (pictured below). I thought it would be really nice if you could mark an auto-indexed array for in place operation. As always, I am open to suggestions, but thought this might be a nice creature feature:

 

Capture.png

 

Cheers, and happy coding. 

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16 Kudos
Cklee

Bookmark Manager: Add VI Source (List of VI-Refs or Names) to Application Event "Bookmark Info Change"

Status: Completed Submitted by Member on 07-16-2014 09:10 AM 2 Comment

If you have open the Bookmark Manager and
you change one bookmark, the Manager gets an "Bookmark Info Change" event and reloads all bookmarks from all
VIs in the project. The event that triggers the update is the
application event "Bookmark Info Change". At this event there is no
info in which vis a bookmark has changed. If the event would provide the info which VIs have changed,
the Bookmark Manager would be able to reload only the bookmarks from this particular vis.
On larger projects the Bookmark Manager needs minutes (Time and CPU
load) to update the whole list. The additional event data node can be an array of vi names or references.

 

This changes will fixed also the EventQ Problem of the Bookmark Manager. If the Bookmark Manager is open and you change several Bookmarks the manager reloads all VIs for x times because everey change generates a "Bookmakrs Info Change" Event.

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22 Kudos
Zekasa

Search 1D array with all the indices of the matched elements

Status: New Submitted by Member on 01-13-2012 03:52 PM 14 Comment

Hi,

 

 the "Search 1D array" function returns only the index of the fist item found. However some times, it is needed to get all the indices of the elements that match the element the we are searching for. I think it will be nice if this vi returns all the indices that match the element we are looking for.

 

g.gif   

 

to become like this

 

srcharay.gif