3d plot cursor reversed axis

I recently started investigating the use of 3d plots in LV2010 for presenting data on a project. I need to label a data point and have it's position updated through time. I figured that a cursor would be the easiest way to accomplish this. However, when I inserted the cursor and placed it at the same coordinates as the data point via a properties dialog the cursor was not near the data point at all. The z position seemed fine, but the x and y position were at the opposite corner of the plot. After some frustration I determined that the problem is that I have the x and y axes inverted in the plot. Apparently the cursor doesn't recognize that the axes are inverted and is placed in the plot as if the axes were not inverted.
Now that I know the issue I can accommodate it by calculating a new position for the cursor and get the label to follow the point through time as I want. I just though that I would share my discovery and see if anybody else has seen a similar issue.

Hi sdfgdfgs,
Thanks for the post. I haven't seen this before but feedback for issues like this are always appreciated. Thanks for including how you made your workaround as well.
Sarah Y
SDR Product Manager
National Instruments | Ettus Research

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Multi plot cursor

Dear All,
I am working on Mixed Signal Graph with Multi plot cursor.
My target is to move the cursor on X axis time scale and get the y axis values of all the plots.
i got some ex. on forum but i am facing a typical problem explained as follows:
By chaning the cursor plot i am getting the y axis values for each plot.
The problem is that the values are continuously changing of the plot y axis value automatically, ans also the values of the respective plot does'nt match all the time, it changes.
I have attached a example, in that the values of the respective plot changes every time.
Am i missing anything, please guide.
Regards,
Shrek
Attachments:
Mixed Signal Cursor.vi ‏34 KB

Here is a quick mod .. don't know if it solve your problem, but I get constant values
Will work only if all plots have the same lenght ...
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'
Attachments:
Mixed Signal Cursor.vi ‏27 KB

Reverse axis

Hi,
I am trying to reverse the order of my 2D plot's y axis (make it decreasing).
I am using Diadem 2012.
I see that in the older versions there was a "mirror.." selection, but in Diadem 2012 I couldn't find it..
Any suggestions?
Regards,
Solved!
Go to Solution.
Attachments:
koray kinik question.JPG ‏129 KB

Hi Koray,
Ah, you're right. The "Scaling Type" property is either "DateTime" or "Inverted", not both. You can set it to "Inverted", but then you have to set the "Display format" property of the DateTime channel in the Data Portal to "Numeric" in order for the "Inverted" setting to stick. Then your axis displays the number of seconds since 0 AD proceeding from top to bottom. In order to display inverted date time values, you'd need to additionally create a UserCommand that uses the RTT() command and invoke it as an @@ function expression, passing it the CFV variable, in the Numbers Format field of the Y axis. I can help you do that, but it's not easy or obvious.
Still interested?
Brad Turpin
DIAdem Product Support Engineer
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LabVIEW crashes when you run a VI that contains a mixed signal graph with a multi-plot cursor.

Hello, LV 8.2.1 notes indicates the following bug fix:
43SAIR2A Fixed an issue where LabVIEW crashes when you run a VI that contains a mixed signal graph with a multi-plot cursor.
I am running this version, and still have this behavior. Is there anything I may be missing, and/or certain circumstances that may still be causing this?
thanks in advance,
Darren

Darren:
I looked at the CAR ID that you mentioned and the issue has been resolved in LabVIEW 8.2.1. To verify something similar, I ran the attached VI and things worked just fine. Please feel free to send me the steps to follow to reproduce the issue you are running into in 8.2.1.
Regards,
Rudi N.
Attachments:
MixedGraphs.vi ‏15 KB

Multi plot cursor in Mixed Graph

If Digital waveform and normal waveform graph is plotted in a mixed graph, and if I choose watch all plots(multi plot) in cursor, LabVIEW closes immediately with an error popup dialog
I have attached the print screen image of that error popup
Attachments:
error.JPG ‏188 KB

Hi Stephen,
           I found a considerable solution to overcome that error.
           Build all the array data at first and then generate digtal
waveform in single instance.
           ie., With number of numerical array data, build a 2D array of
numerical data and make a transpose and then generate a waveform.
           It generates number of digital waveform equal to that of the
column size of 2D Array.
           Do not build generated digital waveforms. This creates an error
while using multi plot cursor--> watch--> All plots.
           I have attached the modified, bug removed Vi with this message for
your reference.
Regards,
Raja
Project Engineer
Soliton Technologies
www.solitontech.com
Attachments:
Mixed Graph Modified without Error.vi ‏25 KB

Multi-plot cursor in xy graph

I am using an XY graph with 5 curves which belong to one of two y axes each. All curves share the same array of x values. I do not like the cursor legend so I want to read out the values of the one cursor programmatically. I can create a multi-plot cursor which watches all the 5 curves but I cannot find how I can read out the 5 corresponding y values of my cursor. Any help?
Thanks,
LX (using LV2014)

Use the cursor index property value and wire that to an index array function for each y array.

Mixed Graph - Multi Plot Cursor Problem

If I plot both Analog Waveform and Digital Waveform in a single Mixed Graph, and when I choose watch all plots in cursor legend, LabVIEW crashes with an error message.....
I have also attached  the Print screen image of that Error
Attachments:
error.JPG ‏188 KB

Jared Boothe,
           I found a solution to overcome that error.
           Build all the array data at first and then generate digtal waveform in single instance.
           ie., With number of numerical array data, build a 2D array of numerical data and make a transpose and then generate a waveform.
           It generates number of digital waveform equal to that of the column size of 2D Array.
           Do not build generated digital waveforms. This creates an error while using multi plot cursor--> watch--> All plots.
           I have attached the modified, error free Vi with this message for your reference.
Regards,
Raja
Project Engineer
Soliton Technologies
www.solitontech.com
Attachments:
Mixed Graph Modified without Error.vi ‏25 KB

Single-plot cursor tree -- how to programmatically collapse it?

How do you programmatically collapse a single-plot cursor tree?
I am saving and restoring waveforms to a waveform graph. Sometimes loading the waveform causes the cursor tree to display collapsed (Example 1), which is desired so the coordinates for both cursors are visible in the legend. However, some waveforms cause the cursor tree to display expanded (Example 2), hiding the lower cursor. I can't even figure out how to collapse it manually. Clicking the minus sign has no effect.
Example 1.
Example 2.

I've made a mistake!
I assumed the cursor-legend was really just a tree, but as it turns out NI has removed our ability to grab the cursor-legend reference since LabVIEW 7.1. Without a reference to the cursor-legend, we can't really do anything like what youre asking. Unless you can find a better answer, I'd recommend circumventing the cursor legend like suggested in this article:
https://decibel.ni.com/content/docs/DOC-6495
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Matt Kirk
Inventor of ImageJVI

Errors with multi-plot cursors on Mixed Signal graphs

Using a Mixed Signal graph, it seems that a multi-plot cursor does not snap correctly if XScale.Multiplier is not set to 1 - it seems to ignore it altogether. A single-plot cursor on the same graph does not have this problem. Am I missing something?
In the attached VI, XScale.Multipler = 0.1, and Cursor 1 (Single-Plot) shows the correct value, but Cursor 2 (Multi-plot) does not.
Attachments:
MixedSignalCursor.vi ‏14 KB

Hello,
The behavior I see is that the multi-plot cursor which is snapped to plot 0 seems to generally follow an "imaginary plot" which corresponds to a scaled version of plot 0, where the scale factor is the value wired to the XScale.Multiplier property. I don't think this is desired behavior so I have filed a corrective action request to R&D to have this addressed. I am sorry for the inconvenience - hopefully you can live with an X-scale multiplier of 1, or the single plot cursors for the time being. It also takes the offset property similarly, offsetting the "imaginary plot" by whatever value is set there.
In any event, if this poses a significant problem with additional contingencies, please let me know and I'll be sure to include any updated information in the corrective action request!
Thank you,
Best Regards,
JLS
Best,
JLS
Sixclear

Problem changing TrackMode from Plot&Cursor (TrackAll) to ZoomXYRectangle

I'm using a CWGraph control from Measurement Studio 6.0 in a C# application.
I want the user to be able to switch between tracking modes on the fly - I use Plot&Cursor mode to allow them to right-click on a point and get more information. But when I switch to ZoomXYRectangle mode, it does not work (it does not allow me to zoom).
Am I missing something? The same functionality works fine on the 3D Graph (switching from TrackAll to TrackZoomPanRotate).
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This is pretty strange ... I played around with the project for a while and there seems to be something about bringing up the context menu that throws something off. If you comment out the line of code that shows the context menu, the problem doesn't reproduce anymore. Also, if it's not working after you switch to zoom mode, you can right-click anywhere on the graph and then try to zoom, and it'll work.
Off the top of my head I can't think of a good reason why this is happening. Since it will work again if you right-click anywhere on the graph, you could hack a workaround by sending a message to the AxHost that's hosting the ActiveX control to make it think that it received a right-click. It's a total hack to fix it, but it does work. Here's some
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[System.Runtime.InteropServices.DllImport("user32.dll")]
private static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);
private const int WM_RBUTTONUP = 0x0205;
private const int MK_RBUTTON = 0x0002;
private static int MAKELPARAM(int low, int high)
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- Elton

How do I plot a y axis on the left and right in DIAdem/VIEW (version 11.0)?

I am trying to analyze flight data, and I would like to analyze plots of certain parameters so that they share an x axis. It is necessary to view these using two different y axis, on the left and right. How do I do this in DIAdem (version 11.0) in the VIEW tab? Is this possible to do in the VIEW tab?

myocom,
You can highlight random points in DIAdem as well.
Here is an example:
Use the cursor to move to the point you wish to highlight.
Press the "Set Data Point and Flag" icon on each data point you wish to highlight
When you are done selecting points, press the "Flags: Copy Data Points" icon - that will copy all X/Y coordinates into two new channels
I created a REPORT Layout using the original data and the highlighted random points (I added the actual point Z-value above the point, they look strange when written at the exact point). I attached the layout for your reference.
The complete task took 3 minutes from loading the data to finishing and exporting the REPORT layout. If you have a REPORT layout already, this will take less than 30 seconds ...
I am not familiar with Matlab, so I can't compare how this works in DIAdem vs. Matlab. You can add the combine the complete process in a Script and it will automatically create this kind of report after simply selecting a few data points in VIEW and then pressing a button ...
Otmar
Otmar D. Foehner
Business Development Manager
DIAdem and Test Data Management
National Instruments
Austin, TX - USA
"For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."
Attachments:
Report with highlights.zip ‏5 KB

Express XY Graph Multi-plot Cursor point

Hi,
In mixed signal graph >> Property >> Cursors Tab >> Enable Allow dragging here if we select Multi-plot, it will show X scale and all Y-scale value in Cursor legend.
How can I get these same options in Express XY Graph?
Sivaraj M.S
CLD

You need to use a property node and find the curser position and then plot those points in a seperate xy plot (only it will be one point instead of an array). You will still have to plot it as an array of one point.
Tim
Johnson Controls
Holland Michigan

Mixed Signal Graph: Cursor Position Property for Multi-Plot Cursor

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Thank you in advance!

Jeanius,
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Ben J.
National Instruments
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MODDEDmixed graph cursor ex.vi ‏41 KB

3D Surface Plot Cursor Error

I can't seem to get the cursor(s) to function on the 3D Surface Plot. I right-click on the front panel plot, go to properties, and select cursor - but then I get an error and LabVIEW crashes. Has anybody had any sucess with this? I've tried it in both LabVIEW 6.1 and 7.1

Hi,
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Let me know if you have any further questions.
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Juan Carlos
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Attachments:
Torus_with_3D_Cursor.vi ‏312 KB
3DGraphStyle.cwx ‏3 KB

Reverse axis values in xy chart - is it possible?

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3d plot cursor reversed axis

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