3d graph display

hi,
i have a graph which is saved in a database.
i want to create an application that displays this graph in 3D .
i'm new to this (i played around with openGL once but that's about it) and so i have a few quesitons:
(1) i read a few articles/posts and found that there are a few libraries that i can use for 3D.
what is the best approach in my case? (jogl, java3D, scenegraph, something else?)
(2) since the graph can be potentially very large (lots of vertices and even more edges) it might be a problem to load all of it at once to the scene right? can the graphic api (jogl for example) be updated with new graphc objects after the scene was rendered? (based on the users action, i.e: the user moved forward an so the nodes/edges in front of him should change)
thanks, and i'm sorry if i used wrong terminology.. as i said, i'm new at this..

You can always download updates from ni.com as well.
I also went through some documentation on known issues in LV 2011. I was able to find something interesting on this page:
3D Picture Controls can display transparently or crash LabVIEW on certain graphics cards
The 3D Picture Control is built on a OpenSceneGraph which uses OpenGL. Several reports of the 3D picture control crashing LabVIEW have been reported. In almost all cases it was an Intel integrated graphics card involved. This crash is caused by an incompatibility of the graphics hardware. Note: Many of the 3D Graphs use the 3D Picture Control
Some possible workarounds are:
Update the video driver
Turn on/off hardware acceleration
Turn on Aero in Windows 7
Turn off Aero in Windows 7
I would try these workarounds and see if any of them work for you.

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Working with dynamic scales in waveform graph - display problem

Hello
I want to use the same waveform graph in the frontpanel for different measurements. These measurements contains 1 to 8 curves, some of them I need to autoscale and others I want to use fixed scales. I wrote a method containing these functions and the functional behaviour is how I expected. But when it runs several times, LabView cannot correctly manage the graph display. Some scales are behind the graph or two scales are at the same position.
Perhaps you have a look at my example VI (LV 7.1), I generate a random Waveform and want to display a random number of curves and some of them in fixed, and some in autorange. The more I run the VI, the more the waveform graph display gets wrong. Does anybody know a solution?
Thank you very much for answering!
sparti.
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ScaleProblem.vi ‏165 KB

hi there
Ben, thanks for the link. Christian's suggestion is right and describes a similar problem.
I solved the problem now on an other way. Each time before I change the visability of the scales I reset all settings to the default (startup) values by property nodes (YScale.Maximum, YScale.Minimum, All Visible...). Then I make the scales which I don't need unvisible, link the graphs to the prefered scales and set the Min/Max or autoscale.
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Now I got a really great waveform viewer with the possibility, scaling some graphs by autoscale, others by fixed scales, using up to 8 scales selectable on the left/right side, user definied colors, names and units.
Thank you all for taking part of my problem.
sparti

Graph display issues

Hello everyone,
I am currently facing a problem of graph display. After some manipulations (typically a mouse wheel scrolling), a part of the curves of my XY graph disappears (see attachment).
I’m using Windows XP and Labview 2009. I have observed the problem on computers with runtimes (no labview development system installed).
Concerned applications have already been tested and some of my colleagues also face such problems for some time. I suspect a hardware compatibility problem but I do not really know how to search and even less how to solve this issue...
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Attachments:
Depart.JPG ‏51 KB
Apres_mollette.JPG ‏50 KB

duplicate
Samuel G. | Application Engineer Team Leader
Certified LabVIEW Developer
National Instruments France
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Été de LabVIEW 2014
12 présentations en ligne, du 30 juin au 18 juillet

How export a pie graph(displayed in jspx page) into a PPT file.

I am trying to export a pie graph(displayed in jspx page) into a PPT file using Apache POI. But I am facing a problem when I calling the below mentioned code from a button.
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How to create Graph display depends on input values/

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www.jfree.org

Why doesn't the scatter graph display properly??

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I've already posted a thread regarding scatter graph
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Hi Ted,
Thanks for replying.
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I would like to create a multipurpose graph display - how?

Hi all, I would like to create a simple VI, it has multiple sets of information and signal inputs (Signal generators or DAQmx cards), and whilst all the information is important, i don't need to see them all at the same time. instead I would like to create an oscilloscope-like display (one large graphical display), and boolean buttons that allow me to select which signals I want to display on the screen (graph).
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Hi MKFX,
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Combining 2 readings into a waveform chart/graph displaying continuous readings of data from different sources

Hi,
In the file
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Thanks in Advance.
Best Regards,
Akhil
Kumar Meesala (Mr.)
Year
4 | Undergrad | Mechanical Engineering
National
University of Singapore
Email:
[email protected]
Mobile:
(+65) 9326 7069
Solved!
Go to Solution.
Attachments:
Serial Read and Write to .tdms & Compare on Graph - test.vi ‏58 KB
Teraterm - Results.xlsx ‏593 KB

Dear GerdW,
I'm sorry again about the misspelling your nick.
I tried connecting a waveform chart to the two terminals (speed from the DAQ and speed from the excel file) but I was unable to get the connection right. I understand that charts are used for readings which are equally spaced out, whereas XY graphs are used when the readings are not be spaced out uniformly. But I am unable to wire the connections correctly.
Actually the DAQ device continuously sends out data through the serial port. So I would not run out of data . Are you referring to the data coming from the DAQ device or the excel file? I actually have not thought of what would happen when the excel file would run out of values I am just hoping for the software to run till then for now
I have cleared up the wires as well Thanks for your help.
Best Regards,
Akhil Kumar Meesala (Mr.)
Year 4 | Undergrad | Mechanical Engineering
National University
of Singapore
Email: [email protected]
Mobile: (+65) 9326 7069
Attachments:
Get Excel Values.vi ‏25 KB
read_excel_values.llb ‏201 KB
Serial Read and Write to .tdms & Compare on Graph - test.vi ‏79 KB

SVG Graphs displaying wrong graph

I have three SVG graphs which display based on the value of a hidden variable passed by clicking on a "driver" graph bar. All graphs are on the same page. Everything works fine until I have selected all the graph bars from the driver graph and then regardless of the bar I select from the driver, the dependent graphs all display the last graph shown(i.e. it's acting as if the SVG graphs are being displayed from cache). Seems like the children graphs should display correctly because the URL string changes every time a new graph bar is chosen in the driver graph. What am I doing wrong?

Hi,
Your requirement is explained by John
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XY graph display just points, no lines

Dear,
Simple question:
How to display juste points on a XY graph?
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Massif

If you can't select the option then maybe you are trying to select it in the wrong place. You can right click on the plot legend and select interpolation or right click on the graph and select properties and then click the plots tab.
If you still have problems, you need to post your VI (please, no pictures that no one can see).
Message Edited by Dennis Knutson on 04-11-2008 08:00 AM
Attachments:
Plot Interpolation.PNG ‏33 KB

Graph display with no data

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You can check the count of the records for and then display the graph accordingly.
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Waveform graph displayed vertically on front panel

Hello everybody
I would like to know if it is possible to display waveform graphs vertically on front panel and if enventually could someone tell me how to do it.
Thanks vey much for help.

You'll have to use an XY graph, and do some programming. You could use the attached vi that simulates a vertical chart as source of inspiration.
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
YChart.vi ‏34 KB

How to display 4 graphs on the same graphs display when running the VI 4 times ?

My goal is trying to display 4 different graphs on the the same XY graph when I run the VI 4 times. Right now, the new graph will overdrive the previous graph when I re-run the VI.
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Solved!
Go to Solution.

You need a mechanism for storing previous data; LabVIEW graphs do not have a history, they display sets of data. A shift register is an obvious answer, but it can get somewhat "tricky" when the Build XY Graph is used as it accepts a DDT and you cannot simply append a data set using array functions...
The solution?
Rather than make the changes for you, I've created a simple example for a regular graph to show you how to use an un-initialized shift register to store values from previous runs (the data will be lost when the VI is closed) as long as the VI is in memory.
I'll leave the DDT conversion from the 2D-array and XY graph implementation for you to figure out in case this is some form of a homework assignment.
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-Bob
Message Edited by B O B on 11-20-2009 04:53 PM
-Bob
Attachments:
Example 2.vi ‏12 KB

Can I make waveform graph display more than the currently read samples?

I have DAQ reading in 17 channels at a rate of 500 samples/second and then writing to a TDMS file, to some guages, and to a waveform graph. I would like for the waveform graph to display more than the samples that are currently being read, I'd like for it to display the last ten seconds worth of samples. How can I accomplish this?
I've attached a picture of the relevant section of my VI. If you need anymore information about the VI just let me know.
Thanks!
Solved!
Go to Solution.
Attachments:
WaveformGraph.PNG ‏46 KB

If you want to use graph only then try with the vi attached in which shift regs are used to store the previous data... I think you can use this and optimise further accordingly..
LV 8.0, 8.6, 2011,2012,2013 WinXP
Attachments:
multiplot graph.vi ‏19 KB

Plot number of graph display using mouse

Dear all,
I have attach a VI. How can i display the plot number (small label) when i move my mouse on any of the points on the plot? I have tried annotations label before however when i zoom in on the plot, my annotations are clearly out of view. Making annotations for every datapoints are also inefficient.
There are many plots to be displayed also and the use of colour to identify is quite limited. I have also tried to make the plots visible and invisble however it is also very troublesome if there are many plots.
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Attachments:
Waveform Graph Coords.vi ‏13 KB

Dear all,
I have come up with some modifications as attach. Right now i am able to update my annotations as i scroll the mouse along the plot. However i face one problem, when i use the zoom function on the graph to zoom in onto some window and i try to scroll the mouse again, it always return the plot back to the original view plot (un zoom plot).
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Attachments:
Untitled 1.vi ‏17 KB
Untitled 1.vi ‏17 KB

3d graph display

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