Control more cursors in XY graph

Im currently working on somthing that requires me to control the locations of many/unknown number of cursors on an xy graph. I can control up to 9 so far (0-8), but in the block diagram when I unbundle the CrsList Property of the XY graph, I can only go as far as 08.Location, and then just stops and wont even start listing cursor 09. I have LabView 6.1 right now, if this has changed in 7, please let me know, or if not, if there is a way around this problem.
Thanks,
Mark

Hi Mark,
you can have as many cursors you want. Look at my example which will generate a new cursor each time you go through the loop. I clicked 23 Times on the "Next Cursor" and got 23 cursors.
Waldemar
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions
Attachments:
xy-Cursor.vi ‏60 KB

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Is it possible to control the cursor of a XY-graph via Keyboard and read the y value of the curser x-position?

I have following problem when I control the cursor via an attribute note, it is neccersary to free the cursor, but then it is not possible to read the y-Value of the cursor position. I want to control the cursor via keyboard and buttons, but with the funtionality of attribute setting "cursor fixed to plot".

You know the X position so just read the Y value by reading it straight from the Y array instead of from a property node...
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Programmatically disabling/enabling cursor in intensity graph

Hello all,
I am building a LV interface (LV2011) for a stepper XY stage. The system "scans" a surface, displaying it on the graph. I set up to cursors to zoom into a region of interest (ROI). Pressing a button resizes the scales to the ROI (zooming in on the area). Sections of code move the XY stage, and read a device. When done I want to zoom into a ROI and use a THIRD cursor to manually move the XY stage. I have this working with TWO graphs, based on the "region of interest.vi" I found in the dev zone.
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Thanks,
Steve
Solved!
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Attachments:
roi.llb ‏40 KB

Your exmaple works perfect. Howver I am having probs with Val(sngl) on the XY graph. On the example you gave, lets say I move the cursor with the mouse - event fires, everyone is happy. If I move the cursor with CODE - nada. I even read the "Value" of the graph and wrote it to "Val(sngl)" to try to fire the event. How does one force a trigger on an XY chart when you move a cursor (say cursor idx2) using code?
Better yet - why when I read the Val and write to Val(sngl) does the event not fire??? I have been searching for a basic XY table with sensor -type project but havent found one yet. Everyting works great - draginng the cursor moves the XY stage. Now I need to do the auto-scan part Use code to place the cursor - trigger the even that moves the stage.
Thanks
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Attachments:
XY_Stage_Rev8.vi ‏53 KB

Cursor in XY-Graph

Hi,
I´m using Labview 6.02 and have a question about the cursor in an XY-Graph.
My task is to set the cursor at the beginning to the zero-position (X). Of
course this is working only in free-mode. The next task is to prevent
scrolling. I have done this with the entry
scrollGraphCursors=FALSE
in the labview.ini-file. But this doesn´t work I expect. Now it´s possible
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you release the mouse now you will never get control to the cursor again.
But I can´t use the ´lock to plot´ mode because of my task #1.
Has anyone a good idea?
Thanks in advance.
Best regards,
Uwe.

Uwe Rößner wrote:
> Hi,
> I´m using Labview 6.02 and have a question about the cursor in an XY-Graph.
> My task is to set the cursor at the beginning to the zero-position (X). Of
> course this is working only in free-mode. The next task is to prevent
> scrolling. I have done this with the entry
> scrollGraphCursors=FALSE
> in the labview.ini-file. But this doesn´t work I expect. Now it´s possible
> to move the cursor out of the draw-area (so the cursor is not visible). If
> you release the mouse now you will never get control to the cursor again.
> But I can´t use the ´lock to plot´ mode because of my task #1.
> Has anyone a good idea?
> Thanks in advance.
>
> Best regards,
> Uwe.
You don't need to use the ini file for anything. You can use property
nodes
to get control of the cursor. Set the active cursor to cursor 0
then lock to plot, then set the cursor X position to 0. Then set allow
drag to true. The user will then be able to drag the cursor in the x
axis and the cursor will follow the plot values in the y axis. So, you
must use the property nodes of the graph to control the cursor.

Automatic Cursor Movement in one Graph, in accordance to the cursor in another graph

I am using two XY graphs each with 4 cursors. I want to assign each cursor of graph A to each cursor of graph B such that the corresponding cursors in graph B moves in accordance to the cursors in graph A.
I have used Active cursor, Cursor.PosX and it works for one cursor. However when I use the same concept to change the active cursor value and faciliate the automatic movement for all cursors they do not work.
Message Edited by Chathuri on 08-13-2009 06:26 AM
Solved!
Go to Solution.

Hi,
As requested I would like to post the solution as to how I tacked the problem. It was actually small mistake on my part. When I connect the two property nodes for each XY graphs I should connect ActiveCursor to ActiveCursor and Cursor.PosX to Cursor.PosX. What I did was connect the Active cursor of A graph to the cursor.index of B graph. I have attached a small screen shot of connecting the first cursor of A graph to the 1st cursor of B graph so that the cursor in B graph follows the cursor in A graph.
In order to connect more cursors as in my case, the only change to be made is the change in the Acitve cursor constant to, 1,2,......
Chathuri
Attachments:
CursorMovement.JPG ‏7 KB

Linking property nodes to two cursors in one graph

Hello,
I have got one graph with 2 cursors. And I need to by able to set the coordinates of each cursor by using property nodes. However, if I click right button mouse button - create - property node - cursor - cursor position - -then there are only 3 possibilities "All elements", "X", Y" which links only to one of the cursors (actually I don`t know which). How is possible to link 2 cursors`s position property nodes to 2 cursors in one graph?
Thank you a lot for discussion.
Martin Pekar
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Go to Solution.

Also, if you have more than a few cursors, you can make the code more scalable by using an array of positions and a FOR loop as follows.
Now the code automatically adapts th the number of cursors you actually have.
(Of course all other common sense applies, for example only set this when the position changes. Don't write the same cursor postions with every iteration of the loop over and over. )
Message Edited by altenbach on 05-06-2009 06:25 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
MulticursorII.png ‏4 KB

Controling the cursor position

Hi all,
I have two x, and y signal outputs from a dll module and I plan to use them to control the cursor position. One problem I'm facing is that my signals are variable enough to cause the cursor to vibrate in stationary setting. So, I use hysterysis (putting threshold) to eliminate these fluctuations but the drawback is that keeping the treshold high enough to eliminate the fluctuations keeps me from getting a nice, smooth movement when the speed of movement (rate of x and y changing) is low. Any ideas or suggestions will be appreciated.
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try a new/fresh apple brand cable and make sure it is the only usb cable in use. this worked for me, i noticed i had no problem with a lighting cable. i did a restore from scratch and from backup and it did not help me...and if you cant sync than you wont be able to get anything but apps back after the restore

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Hallo Thanx,
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Line using cursor in xy graph

hi
how i can draw line using cursor in xy graph
Solved!
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Hi bijal,
Not sure what you are planning to do. But you could start with:
Creating a XY graph.
Right click on the XY graph >> Visible Items>> Cursor Legend.
Right click on the cursor legend >> Create Cursor >> Free. Up to this step, you should able to create the cursor.
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Just input 0 to access the first cursor
Expend it to access an additional properties >> on the second property, click on it >> Cursor >> Cursor Position >> Cursor X.
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Restrict the movement of cursors on xy graph

hello.
I have an XY graph, with values of 0-10 in X, and of 0-10 in Y. I have two cursors in the graph.
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I also hope that the value of X of the cursor0 does not exceed the value of X of the cursor1.
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Hey there, If you want to restrict the value of the cursors you can use property nodes to do so..
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Greetings
Attachments:
Untitled 3.vi ‏11 KB

MODULE POOL WHEN WE PRESS ENTER KEY IN A TBL CONTROL THEN CURSOR GO TO FIRS

DEAR ALL,
IN MODULE POOL WHEN WE PRESS ENTER KEY IN A TBL CONTROL THEN CURSOR GO TO FIRST INPUT/OUTPUT BOX I WANT THE CURSOR WILL STAY ON THAT TBL CONTROL COLUMN.
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Moderator message: no upper case please, search for available information before posting.
Edited by: Thomas Zloch on Mar 11, 2011 11:50 AM

Hi,
This is possible only for check boxes and radio buttons.
for others you atleast need to double click.
please note double click is possible.
regards
Ramchander Rao.Krishnamraju

Control more cursors in XY graph

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