Locking a cursor to named plot

I am trying to lock a named cursor to a named plot. If I don't have a name for the cursor and leave the numerical index, the cursor will "lock to plot". If I use a property node to assign a cursor name, then all of the plots lock to the last cursor name.
I set up the properties in the cursor list before the name is applied to the cursor.

hello,
I dont know if it is exactly what ou want to. I have done an example using property node to associate a cursor with a plot. Tell me if it is what you want to.
Hope this help.
Isabelle Jean
Isabelle
Ingénieur d'applications
National Instruments France
Attachments:
cursor.vi ‏37 KB

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Cursor and invisible plots

I saw the same question but not an answer, yet. A cursor tracks invisible plots. Disabling plots doesn't work either.

Hello Pera,
This is a known issue with ComponentWorks 3.0.1 (and prior) which has been fixed in Measurement Studio 6.0. You can upgrade quickly and easily at our online site http://www.ni.com/upgrade while taking advantage of upgrade pricing. If you have any questions or comments, feel free to contact us at http://www.ni.com/ask.
Jeremiah Cox
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National Instruments
http://www.ni.com/ask

How to 'lock' my cursor to one of my two monitors?

Hello all, thanks for reading my question!
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You need to contact Adobe support thru chat and ask them to reset your activations. I don't believe they work weekends though.
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Using cursors on 3D plot

Hello!
I'm using 3D plot block. I've inserted a cursor,each point of the plot has a name i want that the cursor show this name.
I've seen that the cursor of 3D plot shows you the coordinates of the point. How i can catch the value of the cursor...in 2D plot i use property node to obtain this value, but i have no idea if it is possible.
I need this information strongly.
Thanks!

The 3D cursor name can be accessed using a property node, in a way very similar to thre 2D cursor. Except that it is more difficult to access the proper property node. The attached vi shows how to do it.
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
3D cursor name.vi ‏67 KB

How to add cursors on polar plot

I want to add cursors on polar plot just like the XY graph has. I am new to LabVIEW and want to be able to move those cursors by mouse movements and get the respective Angle and Magnetude values. Since the polar plot is a picture I am unable to do the same. So my questions is;
Can I add cursors on Polar plot? If not, then, is there any other way to do so?

Hi!
I've found an old post about you issue: http://forums.ni.com/t5/LabVIEW/the-best-way-to-make-a-nice-POLAR-plot-in-LV/td-p/115478 (but no easy solution is provided ).
You can use an XY plot, of course, but it's up to you to convert your polar plot to the cartesian coordinate system of the XY plot and the way back for the cursor coordinates.

Multiple cursors for one plot

Hi everybody,
I'm trying to put multiple plots on my XYGraph. I need then that for instance cursor1=f(cursor0).
Is it possible ? If it's not what are the alternatives ?
Best regards.
MartinO.
Solved!
Go to Solution.

MartinO. wrote:
You tell me that there is no way to link the cursors automatically ...?
Yes, that's what I'm saying. You have to do it yourself. See attached example (LV 8.2). Note that the second cursor is a free cursor rather than linked to a plot. There's a bug with setting the Y position of a cursor that's linked to a plot. Not sure if it's been fixed - you can contact NI with the CAR that's given in the message in the link I provided.
Attachments:
Linked Cursors.vi ‏26 KB

Bode magnitude graph cursor not following plot

Hi,
I was wondering if anyone would be able to shed some light on a problem that I am having regarding an XY graph cursor.
I have developed a simple VI to determine the characteristics of a low pass filter using a sine wave ramped in frequency and subsequently monitoring the gain of the filter to create a Bode plot.
Through analysis of the Bode plot I would like to determine the cut-off frequency of the low pass filter under test. I have introduced a cursor into the graph and using a property node I hoped to drive the cursor to the -3dB point in the Y axis and output the cursors corresponding X position thereby determining the cut-off frequency of the filter.
However the cursor never seems to follow the plot beyond the first step of the loop. It feels as if there is a break in the plot between the 1st and 2nd iteration of the while loop used to ramp the signal generator.
I've tried to work out why the cursor won't follow the plot to -3dB but so far I am stumped.
Any help or advice that you could provide would be greatly appreciated ! I have provided the attached VI for clarity.
So liberate your minds and give your soul expression. Open up your hearts, I'll sing for you this song. Let the people sing !
Solved!
Go to Solution.
Attachments:
LPF Auto Test.vi ‏109 KB

I have corrected your VI.
First, you needed to put the property node AFTER the while loop, because you need the graph to be done first and then look at the frequency cut off.
Second, in LV, the property nodes are read from top to bottom. So you need to place the cursor at Y = -3 first, and then read the X position.
I attached the corrected vi
Giuliano Franchetto
Student at the l'Ecole Nationale Supérieure des Mines de Saint-Etienne, cycle ISMIN (FRANCE)
Attachments:
LPF Auto Test.vi ‏109 KB

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Hi everybody,
here is what I wanted to do but I have no idea how to:
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and the cursor should
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Is there no simple way?
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Ronny

Here is a solution :
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Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
Spot.vi ‏58 KB

How Do You Move Cursor To Another Plot?

I have a couple of plots I am working with. How do I move the Cursor (programmatically) from one plot to the next?
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You can set the snapmode to SnapToNearestPoint and drag the cursor there (that works), but I need to do it programmatically.

The following code demonstrates what you want to do. The form should have a 2D Graph (CWGraph1), a DSP control (CWDSP1), and a command button. Your difficulty may have been in (not) using the Set statement to assign a plot to the cursor. The VB lines of particular interest are in bold.
Private Sub Command1_Click()
Dim phase
Dim x
Dim y
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I hope this helps,
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Cx_Oracle cursor - return named tuple

Hello All,
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Is there any easy way to move the cursor in a plot by just a mouse click?

Right now I have to click at the cursor and drag it to the right position. I was wondering if there is an easy way to just do the mouse click to change the cursor (not dragging the cursor). I have only one cursor in the graph.

Assuming that if you click the cursor that you want it to always move to the same position, I think that you could do what you want by calling the cursor's SetPosition method in the graph's CursorMouseDown event.
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Disable scrolling of cursor in a xy graph

Hello,
I want to use the cursor to measure two points in a graph and also disble
the capability of the cursor to change the current x and y scale of the
graph. I my current situation when i move the cursor beyond the gaph's
boundaries the current x or y scale changes.
Who can help me out?
Greetings,
Jeroen

> I'm very interested in disabling the cursor scroll capability but I'm
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>
I could be confused by the version number. The item is definitely in
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Can i position my cursors in a mixed signal plot with my mouse?

i can move the cursor in the plot via the cursor controls with no problem. but it's a very slow and arduous process. i'd like to be able to just grab the cursor with the mouse and position it where i want to.
i can grab the cursor with my mouse now, but when i move it, it's like the cursor is locked to the position on the plot and moves the whole plot, which i don't want to do.
i just want to be able to position the cursor a little faster or quicker than with the left/right/up/down buttons that are avialable now. it would be great to be able to click my mouse at a point in the plot, and snap the cursor to it, or just grab the cursor and put it where i want to.
if anyone has any helpful suggestions or hints, i'd appreciate it.
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chip
Solved!
Go to Solution.

james and baji,
thanks for your input, but i guess i'm not very clear in my question. first of all i don't see a cursor locked property to use, so i'm a bit confused on that point.
but my problem is, i'm using a mixed signal plot, it has say three plots on it. the scales for the x is 1435 to 1455 while the y scale is 0 to 500. there are three plots displayed. using the cursor control buttons (the four diamond pattern controller for up, down, left right) i can position the cursor crosshairs at any point on the displayed plot window, whether on a plotted point or anywhere on the displayed scale.
but when i grab the cursor, and move it anywhere, i move the whole display along with the cursor, and all my scales change on the plot window accordingly to where i grab the cursor and move it. but the cursor stays locked onto that spot and the plot area moves. what i want to do is have the plot area stay where it is, and move the cursor only, not the whole plot..
what i'm trying to do is pick an xy coordinate with the cursor and write that point to a file. i can do that using the cursor control buttons, the cursor moves freely anywhere in the plot window, even though it takes a long time (holding the shift key speeds up the cursor).
unfortunately, i can't download any of the demo vi's you guys have left, my firewall won't let that happen.
thanks for your help though,
chip

Locking a cursor to named plot

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