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
(you may want to rearrange the data into a tree control instead of a cluster array, in which case you'll be able to use my posted code, and you'll be able to manually expand/contract the nodes).
Matt Kirk
Inventor of ImageJVI

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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

How can I update single plot in multi plot xy graph?

Hi all,
I'm working on an HMI "front" for a larger acquisition/analysis system, that includes continuous performance monitoring of a turbine. The results of the measurements are stored arrays of contour lines, that represents turbine efficiency and guide vane openings. This analysis is all performed in the background. In the HMI, the performance data is loaded from file when the specific "report" is requested, and is plotted in an XY graph. I would like to indicate the current operation point of the machine by using a plot that is a single point. Thus, that point's position among the contour lines indicates the current performance of the turbine. This point is updated once every second, while the performance data remains the same for considerable amounts of time between recalculations (days to weeks).
Is there any way of updating the value of a single plot in a multiple plot XY Graph without having to redraw all the plots?
I've tried using the "Active Plot" property, which doesn't work.
My current solution is to keep all the data as input to the executing while loop and replace a subset of the plot array, but that of course requires the entire rewrite every time the operation point plot is updated.
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Jarle Ekanger, MSc, CLD
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Solved!
Go to Solution.

You cannot redraw a single plot. If you want to update a single plot, you need to retain all plots in a shift regsiter and replace the data of the desired plot. However, your problem seems much simpler than that. To show a single point on a nearly static plot you have several options.
You can use a cursor that is controlled programmatically (the style can be a point, don't allow drag).
You can use annotations.
You can use the "plot images" feature that allows you to use image commands to draw anything on top of a graph.
None of these ideas require a redraw of any data.
I think the cursor idea is probably the easiest and most appropriate. Just use a property node with the following properties:
active cursor
cursor position x
cursor position y
LabVIEW Champion . Do more with less code and in less time .

How to change the node's icon in a tree when the node collapse or expand?

how to change the node's icon in a tree when the node collapse or expand?

Hi,
You may need to use custom skin for that.
-Arun

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.

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

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

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).
Thanks,
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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
sample code that shows how to do this:
// Place this code somewhere in the form class:
[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)
return ((low & 0xffff) | ((high & 0xffff) << 16));
// Change the CheckedChanged event handler for the zoom radio button so that
// the message is sent when the track mode is changed.
private void zoom_CheckedChanged(object sender, System.EventArgs e)
if (zoom.Checked)
axGraph.TrackMode = CWUIControlsLib.CWGraphTrackModes.cwGTrackZoomRectXY;
SendMessage(axGraph.Handle, WM_RBUTTONUP, MK_RBUTTON, MAKELPARAM(1, 1));
- Elton

Single Plot fill with different colours

Hi;
Any suggestions on how I could fill a single plot with 2 different colours.? Basically I have a single sine wave trace. I want to fill the plot on the positive gradient of the sine wave with red and the negative gradient with green. I need to do this with measurement studio and VB6.
Thanks.

Hi Dayaa,
There is no straightforward way to do this. You will need to use two plots. To plot these plots you will
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properly. This forums post should help you out:
http://forums.ni.com/ni/board/message?board.id=231&message.id=692&requireLogin=False
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

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Is it possible to create a single texbox? and how to delete a button on a form? please asap, badly n

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Hello Gustavo,
You can create a single textbox using the textbox option here (This is for you to enter text - not for the visitor): http://jingsite.businesscatalyst.com/jing/2013-09-30_2212.png
If you want to create a textbox for the visitors to enter text, then you need to enter a form, and you can delete the "message" field from the "simple contact" form, but not the name and the email fields (those are mandatory and can't be deleted).
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Cheers
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How to programmatically add rectangle to a pdf file ?

How to programmatically add rectangle to a pdf file ?
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Users are color blind and have disabilities.
To train them, one adds a rectangle at a certain lower-left point and width,height specified for a page.
The idea is to give the script the page and coordinates and size of rectangle to be added programmatically. Green rectangles are acceptable as the cones are most sensitive there.
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Dying Vets

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How to programmatically place the field in the canvas.

Hello!
Can you please tell, how to programmatically place the field BLOCK1.FIELD1 in the canvas CANVAS1.
At the moment on the field value CANVAS = NULL.
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Thank you

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Quick doubt.. from cursor vairable how to get into page vairable

Hello
i am creating an apex page where i have 2 regions. From the Top region stores all fields entered into the bottom region
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kp

Your explanation is not good enough. You have to make a better description of your problem or create an example at apex.oracle.com.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.apress.com/9781430235125
http://apex.oracle.com/pls/apex/f?p=31517:1
http://www.amazon.de/Oracle-APEX-XE-Praxis/dp/3826655494
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How to programmatically copy a OneNote page from one section to another

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I don't find any interface in OneNote
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any help?
Regards,
Umar
OneNote 2010

Hi Umarinam,
Thank you for posting in the MSDN Forum.
In the page OneNote 2010 Developer Reference, you can see an Application Interface which includes methods
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Hope it helps.
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Quist Zhang [MSFT]
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Single-plot cursor tree -- how to programmatically collapse it?

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