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

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XY graph datapoint display using cursor

Hello to all, I am using XY graph to display amplitude v/s time. While running the vi, data is continuously plooted on graph till user stops the vi. I want to add a feature such that, while running the vi, when user click on the graph on particular position using cursor, it should display corresponding time value and amplitude value of that point. I mean value of Y-axis corresponding to X-axis not the cursor position. When using cursor position, it is ok with X-axis but it shows the position of cursor for Y-axis (as property says) , and I want datavalue of that point not y-axis position.
I hope it is clear with question. Let me have some example...for y=x graph shown below, you can see for cursor x=4.4 and y=6.8, how to display corresponding datapoint which shoud be y=4.4
Solved!
Go to Solution.

While creating (or even after you created), choose 'Snap to' Plot 0.
Don't let it be 'Free Dragging'
Example attached.
I am not allergic to Kudos, in fact I love Kudos.
Make your LabVIEW experience more CONVENIENT.
Attachments:
Snap to Plot 0.vi ‏10 KB

Line using cursor in xy graph

hi
how i can draw line using cursor in xy graph
Solved!
Go to Solution.

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.
To obtain the data from the cursor, go to your block diagram >> right click on the XY graph terminal at the block diagram >> Create >> Property Node >> Active Cursor. This should create the property node for your XY graph. To change a selected property to write, right click on the active cursor >> Change to Read and it should be like below:
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.
Expend the properties until you see as below:
It Cursor.PosX and Cursor.PosY isn't changed to write, do change it to write by right clicking on Cursor.PosX >> Change to Write. Do the same for Cursor.PosY
Up to point 6, you should be able to obtain data from the XY graph cursor.
Use those values to plot into the XY graph. I believe you'll need to find a way to plot XY graph by building an array of clusters.
Hope it helps
Warmest regards,
Lennard.C
Learning new things everyday...

Identify peaks on graph using cursors

I have a piece of analysis software that is supposed to identify event shapes based on peaks in a histogram (attached, along with a sample data set). Following the advice of users in my last thread, I rewrote the program in what I hope is a much improved way. My first question as a LabVIEW newbie: please critique my code. Suggestions for improved style/readability are more than welcome.
Currently, the program automatically detects peaks in the histogram and fit them, which works fine. However, for more noisy data sets where peaks overlap or there may be many small peaks, it does not do as good a job as it does for the sample data provided. To that end, I would like to be able to have users specify peak locations, ideally by clicking on the graph. It would be relatively simple to have them input them numerically (something like this, for example: https://decibel.ni.com/content/docs/DOC-2238), but I would like to learn to user cursors at the same time if possible. So, my idea is this:
After plotting the raw histogram without a fit, users would be prompted to enter a variable number of peak locations by clicking on the graph, which would then be used to split the graph up into pieces containing a single peak and fit, just as is already done in the program. Basically I want to replace the Peak_Detector.vi with user input. I believe from reading around that the way to do it would be to use cursors, but I haven't been able to find an example showing me how to do it. A push in the right direction would be appreciated!
To run it, feed the input file the attached .csv and take the default values. If anything is unclear, let me know.

(disclaimer : I haven't looked at your VI).
One way to use the cursors would be to create one (in EDIT mode) and have it snap to plot 0.
It will therefore always be on your plot.
You can show the readout (Cursor Palette) if you like.
In the code, it's just a property of the graph.
You could respond to changes in cursor position and provide your own readout, if you like.
Provide a button (or menu item) to DO IT, and when the button is clicked, you remember the X and Y cursor value (read the properties) and use that Y value as your peak.
you could also look up some other value at that X location, if that does anything for you.

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.

Is it possible to use cursors and zooming in the plotxy function that outputs pictures?

I use the plot multi xy function in my vi that outputs a picture. And I wonder if it is possible to use cursors and zooming with this output picture?
Thanks,
Ogulcan Kaya

Hi Ogulcan,
it is, but not as straightforward as with standard graphs.
As a starting point take a look at the example shipped with LV: Modified Smith Plot with Zooming.vi; you find it in picture examples.
Good luck,
Alberto

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

Generate report using CURSORS? - Simple question

Folks,
I'm a real newbie still with PL/SQL so please excuse my ignorance I have a simple report I need to generate. The following SQL statement gets me all my "header" records:
SELECT OHA.ORDER_NUMBER, HEADER_ID, ATT11, ATT12, ATT16
FROM XXXWD.WD_DUPS DUPS, OE_ORDER_HEADERS_ALL OHA
WHERE OHA.ATTRIBUTE11 = DUPS.ATT11
AND OHA.ATTRIBUTE12 = DUPS.ATT12
AND OHA.ATTRIBUTE16 = DUPS.ATT16
AND (OHA.FLOW_STATUS_CODE NOT IN ('CLOSED', 'CANCELLED'))
AND (ATT11 <> 'WESTERN SERVICE')
ORDER BY ATT11, ATT12, ATT16
What I want to do now is have a second script that will display all my detail records. Something like:
SELECT OLA.LINE_NUMBER, OLA.ORDERED_ITEM, OLA.FLOW_STATUS_CODE
FROM OE.ORDER_LINES_ALL OLA
WHERE OLA.HEADER_ID = OHA.HEADER_ID
I expect I'd do this with two cursors, passing the value of my HEADER_ID to my second cursor. But when I've used cursors before, they primarily have been to import data, and manipulate data. But what if I just want to create a report using these?
I essentially want to display my header information, and then any lines below that data (if there is any, there may be a header with no lines).
Can I create a simple report like this with cursors? Any help with this would be IMMENSELY appreciated. I'm really under the gun... :)
Thanks so much!
Steve

Here's one query that will give you everything:
SELECT OHA.ORDER_NUMBER
      ,OHA.HEADER_ID
      ,DUPS.ATT11
      ,DUPS.ATT12
      ,DUPS.ATT16
      ,OLA.LINE_NUMBER
      ,OLA.ORDERED_ITEM
      ,OLA.FLOW_STATUS_CODE
FROM   XXXWD.WD_DUPS        DUPS
      ,OE_ORDER_HEADERS_ALL OHA
      ,OE.ORDER_LINES_ALL   OLA
WHERE OLA.HEADER_ID   = OHA.HEADER_ID
AND    OHA.ATTRIBUTE11 = DUPS.ATT11
AND    OHA.ATTRIBUTE12 = DUPS.ATT12
AND    OHA.ATTRIBUTE16 = DUPS.ATT16
AND    OHA.FLOW_STATUS_CODE NOT IN ('CLOSED', 'CANCELLED')
AND    DUPS.ATT11 <> 'WESTERN SERVICE'
ORDER BY OHA.ORDER_NUMBER
         ,OLA.LINE_NUMBER
         ,DUPS.ATT11
         ,DUPS.ATT12
         ,DUPS.ATT16
;(correction in order by clause)
Message was edited by:
Eric H

To Use Cursor or TYPE table Index by PLS_integer

Hi All,
Let's see if I have table with no. of records 19,26,20,000.
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What is it you want to do to/with the rows you're looping through?
Ideally you want to avoid looping, as that's row by row (aka slow by slow) processing and it's expensive time-wise.
If you're doing DML (insert/update/delete) then you're best off doing it in one sql statement, rather than looping.

How to pick max value from a column of a table using cursor and iteration

Hello Everybody
I have a table loan_detail
and a column in it loan_amount
now i want to pick values from this table using cursor and then by using iteration i want to pick max value from it using that cursor
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LOAN_AMOUNT
100
200
300
400
500
5600
700i was able to do it using simple loop concepts but when i was trying to do this by using cursor i was not able to do it .
Regards
Peeyush

SQL> SELECT MAX(sal) Highest_Sal,MIN(sal) Lowest_Sal FROM emp;
HIGHEST_SAL LOWEST_SAL
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5      SELECT sal FROM emp;
6    counter INTEGER := 1;
7 BEGIN
8    FOR i IN emp_sal LOOP
9      sal_tbl(i.sal) := counter;
10      counter := counter + 1;
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13    DBMS_OUTPUT.put_line('Highest SAL:' || sal_tbl.LAST);
14 END;
15 /
Lowest SAL:800
Highest SAL:5000
PL/SQL procedure successfully completed.
SQL> Even smaller
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11    DBMS_OUTPUT.put_line('Lowest SAL:' || sal_tbl.FIRST);
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14 /
Lowest SAL:800
Highest SAL:5000
PL/SQL procedure successfully completed.
SQL> Edited by: Saubhik on Jan 5, 2011 4:41 PM

Any way to use cursor values inside other cursor by bulk collect?

hi,
Is there any way to use cursor get_tables value insdide loop get column if i am using bulk collect in both cursors?
I tried a lot but i am nt able to do it.kindly help...
create or replace procedure MULTIPLE_CURSORS_PROC is
v_owner varchar2(40);
v_table_name varchar2(40);
v_column_name varchar2(100);
cursor get_tables is
select distinct tbl.owner, tbl.table_name
from all_tables tbl
where tbl.owner = 'SYSTEM';
cursor get_columns is
select distinct col.column_name
from all_tab_columns col
where col.owner = v_owner
and col.table_name = v_table_name;
begin
open get_tables;
loop
fetch get_tables into v_owner, v_table_name;
open get_columns;
loop
fetch get_columns into v_column_name;
end loop;
close get_columns;
end loop;
close get_tables;
end ;

hi there
Refer this
CREATE OR REPLACE PROCEDURE MULTIPLE_CURSORS_PROC
IS
   TYPE scol IS VARRAY (10000) OF VARCHAR2 (32767);
   v_table_name    scol;
   v_column_name   scol;
   TYPE curtyp IS REF CURSOR;
   get_columns     curtyp;
   CURSOR get_tables
   IS
      SELECT   DISTINCT tbl.table_name
        FROM   all_tables tbl
       WHERE   tbl.owner = 'SYSTEM';
BEGIN
   OPEN get_tables;
   LOOP
      FETCH get_tables BULK COLLECT INTO   v_table_name;
      FOR indx IN v_table_name.FIRST .. v_table_name.LAST
      LOOP
         SELECT   DISTINCT col.column_name
           BULK   COLLECT
           INTO   v_column_name
           FROM   all_tab_columns col
          WHERE   col.table_name = v_table_name (indx);
         FOR ind IN v_column_name.FIRST .. v_column_name.LAST
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            DBMS_OUTPUT.put_line (v_column_name (ind));
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   END LOOP;
   CLOSE get_tables;
END MULTIPLE_CURSORS_PROC;regards
Hitesh

Report using cursors and loop

Hi,
can anybody suggest what kind of report and in what way I have to use if I want to write query using cursors within loops?
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Karina.

Hi,
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Karina.

Using Cursor in Select statements? How to do this?

I am getting an error whilt passing a cursor to a select clause:
SELECT dbms_xmlquery.getXML('select deptno, dname, '||
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Loading data from one table to another using cursor

Hi,
I have given the below command to load the data from 1 table to another using cursor.
declare
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varSqlStatus=`db2 "load from mycurs of cursor modified by identityignore insert into tmp_tab(col1,col2,col3,col5,col6,col7) nonrecoverable"`
But I want it in oracle 10g, Can any one help me in this.

Have you tried either of the two options :
1. Modify the CURSOR itself :
cursor mycursor IS
SELECT extract_name,from_date,to_date,BETA,'N','Y' from temp_table where EXTRACT_NAME='GIFTCARD_DETAILS';2. Modify the INSERT statement itself :
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Using cursor function in sql statement

hi all
can anyone plss explain why and when we will use cursor function in a sql statement like this and what is the difference while executing this sql statement with cursor function in comparison of a simple sql statement----
select
department_name,
cursor (
select last_name
from employees e
where e.department_id = d.department_id
order by last_name
) the_employees
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thnx in advance

RTFM
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/sqloperations.htm#sthref1452
Cheers
Sarma.

Using cursors on 3D plot

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