Center the cursor on the Waveform Graph?

I have a waveform graph where the user can adjust the scale on both the X and Y axes. The "problem" that I am having is that if the scale's range is set too far from where the cursor is at, the cursor will be off screen and not selectable. So, I am trying to center the cursor to the scale when the scale is changed or via a button. Here is the code that I have written for one of the Cursor plots:
Select Case setBlueCursor
Case 1
blueCursorPt.Plot = plotInlineTorque
inlineTorqueMax = yAxisInlineTorque.Range.Maximum
inlineTorqueMin = yAxisInlineTorque.Range.Minimum
blueCursorStartY = (inlineTorqueMax + inlineTorqueMin) / 2
blueCursorStartX = (XAxis.Range.Maximum + XAxis.Range.Minimum) / 2
blueCursorPt.YPosition = blueCursorStartY
blueCursorPt.XPosition = blueCursorStartX
This code will center the cursor like I want but then I can't move the cursor after that as it is "stuck" at the position that I have coded it. The problem appears to be with the last two lines of code here. I do not know of any other way to do this though. I have tried the "moveCursor" method but the end result ends the same way, with the cursor stuck in the center and can't move. Any help on a solution? Is there a better, easier way to do this? I'm new to Measurement Studio and .NET.
Thank you

This code works. It appears that I was calling the subroutine that this code is located in over and over in another part of my program.

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Executing "bring to center" on a free cursor in a log XY graph brings the cursor to the top rim of the graph (instead of the center)

Dear support,
dear LV users,
selecting "bring to center" for a free cursor in a XY graph does not
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Go to Solution.

You are right, LabVIEW chooses this form (min(y_axis)+max(y_axis))/2).
You can go to "idea exchange".
Link:
http://forums.ni.com/t5/ideas/v2/ideaexchangepage/blog-id/labviewideas
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I want to control cursors in a waveform graph programmatically. I've tried using the "Cursor list" property, modifying the cursor clusters and writing the results back to the cursor list property, but this only works sporadically. Modifying the cursors by ref number works well, but you have to get the refnumbers from an event structure during a cursor event. Is there any way to get cursor reference numbers aside from through an event structure?
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Hi barryinbo,
On the controls pallette, go to refnums> Control refnum>Control. Then right click the refnum and point to select vi server class>Generic > and you will see a cursor there. This will be a "loose typed refnum" but you can right click the refnum to include data type. An alternative is to drag a cursor to the refnum, this will make it strict typed.
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Does anyone know how to look up the values in a waveform graph with a mouse
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Dear Chad,
I know of the function "bring cursor to center". I also figured out that
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I would like to see the function that with a mouse click a little menu
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Best regards,
And thank you for your help.
Thijs Boer�e
"Chad AE" schreef in bericht
news:[email protected]...
> Dear Thijs,
>
> Thank you for contacting National Instruments.
>
> To address your question, there is no direct VI, command, or property
> node that will allow the cursor snap-to-mouse functionality.
>
> I notice a problem you may be occuring is trying to find where the
> cursor is on the graph. If this is an issue, you can select Bring to
> Center from the Formatting Ring on the Cursor Legend to move the
> cursor to the center of the graph.
>
> Let me know if you have any further questions or if this does not
> resolve your issue, as I would be happy to file a product suggestion
> so that LabVIEW is improved in future versions.
>
> Thanks again and have a great day!
>
> Chad AE
> Applications Engineer - National Instruments

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Transition measurement vi cursors displayed in waveform graph are moving outside of scale

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The block diagram is in the first capture
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Solved!
Go to Solution.
Attachments:
Capture.PNG ‏44 KB
Capture1.PNG ‏7 KB
Capture2.PNG ‏29 KB

Hi Wayland,
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Set the cursor in the middle in XYGraph

hi how to set the cursor in the midde programmatically?
need help plz?
for labview 8.0

Here's a simple example (LV 8.0) showing how you can center the cursor with a button press.
Message Edited by altenbach on 06-18-2008 11:35 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
CenterCursor.png ‏13 KB
CenterCursor.vi ‏22 KB

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FORM f_ingresar_comentarios.
DATA: l_action,
l_result LIKE itcer,
l_pedido LIKE thead-tdname,
li_coment_save LIKE i_comentarios OCCURS 0,
li_coment_aux LIKE i_comentarios OCCURS 0 WITH HEADER LINE,
l_lines TYPE i,
l_lines_save TYPE i,
l_lines_insert TYPE i,
l_index TYPE i,
l_index_aux TYPE i,
l_insert,
lwa_control LIKE itced.
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CLEAR i_comentarios.
REFRESH: i_comentarios,
li_coment_save,
li_coment_aux.
l_pedido = v_pedido.
Leemos el texto si es que existe
CALL FUNCTION 'READ_TEXT'
EXPORTING
client = sy-mandt
id = v_id_text
language = sy-langu
name = l_pedido
object = c_ekko
IMPORTING
header = wa_cabecera
TABLES
lines = i_comentarios "Lineas de texto leídas
EXCEPTIONS
id = 1
language = 2
name = 3
not_found = 4
object = 5
reference_check = 6
wrong_access_to_archive = 7
OTHERS = 8.
IF sy-subrc <> 0.
Armamos la cabecera por primer comentario para el pedido
CLEAR wa_cabecera.
wa_cabecera-tdobject = c_ekko. "Objeto en tabla TTXID
wa_cabecera-tdname = v_pedido. "Nro de pedido
wa_cabecera-tdid = v_id_text. "ID en tabla TTXID
wa_cabecera-tdspras = sy-langu. "Lenguaje
wa_cabecera-tdlinesize = 70.
ENDIF.
Salva comentarios originales
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Abre el editor de texto
CALL FUNCTION 'EDIT_TEXT'
EXPORTING
header = wa_cabecera
save = space
control = lwa_control
IMPORTING
newheader = wa_cabecera
function = l_action
RESULT = l_result
TABLES
lines = i_comentarios
EXCEPTIONS
object = 1
id = 2
language = 3
name = 4
linesize = 5.
Si cambio los comentarios, actualiza comentarios
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WHEN c_unchanged.
WHEN c_delete.
WHEN c_update OR
c_insert.
Obtiene cantidad de lineas de comentarios originales y modificados
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Calcula cantidad de lineas a insertar para luego calcular valor de
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l_lines_insert = l_lines - l_lines_save.
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TO li_coment_aux.
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v_comentario = 'S'.
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name = 3
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IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
ENDIF.
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In addition, I made another program simpler that it uses the same functions and also have the same problem:
*& Report Y_GVA_TEXT *
REPORT y_gva_text .
DATA: wa_cabecera LIKE thead,
i_comentarios LIKE tline OCCURS 0 WITH HEADER LINE.
DATA: l_action,
v_comentario,
l_result LIKE itcer,
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l_pedido LIKE thead-tdname,
c_a05 LIKE thead-tdid VALUE 'A05',
c_ekko LIKE stxh-tdobject VALUE 'EKKO',
l_lines LIKE sy-tabix,
lwa_control LIKE itced.
CONSTANTS: c_x VALUE 'X',
update VALUE 'U', "Langtext verändert
insert VALUE 'I', "Langtext eingefügt
delete VALUE 'D', "Langtext gelöscht
modify VALUE 'M', "Kein Langtext, Inlinezeile veränd.
unchanged VALUE ' '.
CLEAR: l_action.
CLEAR i_comentarios.
REFRESH i_comentarios.
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EXPORTING
client = sy-mandt
id = c_a05
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id = 1
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name = 3
not_found = 4
object = 5
reference_check = 6
wrong_access_to_archive = 7
OTHERS = 8.
IF sy-subrc <> 0.
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wa_cabecera-tdobject = c_ekko. "Objeto en tabla TTXID
wa_cabecera-tdname = v_pedido. "Nro de pedido
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wa_cabecera-tdspras = sy-langu. "Lenguaje
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ENDIF.
lwa_control-noendlines = c_x.
lwa_control-scrollend = c_x.
Abre el editor de texto
CALL FUNCTION 'EDIT_TEXT'
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header = wa_cabecera
save = space
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lines = i_comentarios
EXCEPTIONS
object = 1
id = 2
language = 3
name = 4
linesize = 5.
Si cambio los comentarios, actualiza comentarios
CASE l_action.
WHEN unchanged.
WHEN delete.
WHEN update OR
insert.
Agrega usuario y fecha del comentario
CONCATENATE sy-uname
sy-datum
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i_comentarios-tdformat = '*'.
APPEND i_comentarios.
CALL FUNCTION 'SAVE_TEXT'
EXPORTING
header = wa_cabecera
IMPORTING
newheader = wa_cabecera
TABLES
lines = i_comentarios.
ENDCASE.

Murugesh,
I believe that you have mis-read Gabriel's problem.
Gabriel,
The cursor is not positioning at the base of the editor as you have cited.
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data: hdr like THEAD.
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hdr-TDTXTLINES = '3'.
l_itced-SCROLLEND = 'X'.
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    LINESIZE            = 3
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    OBJECT              = 5
    TEXTFORMAT          = 6
    COMMUNICATION       = 7
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Don't forget those points !!

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Center the cursor on the Waveform Graph?

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