exclusion of a calculation of the average value

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• calculation of the average value of the sorted data and polar route drawing

  Hello

  I did a VI that calculates the average value of the wind rotor/speed-ratio in the sections of 30 degrees (wind direction). He also called the polar plot of calculated data. Everything works, but I would like to make more detailed calculations and drawings, by increasing the resolution to 1 degree, or...

  Problem is VI, I did, is not easy on a large scale. At the moment, I have 12 parallel structures of switch-box to calculate the average value and build the array function to collect data calculated for Polar plot to draw the image in real time. I know it's probably the worst way to do it, but since I have done a few things with LV, it was the only way I managed to do what I wanted.

  Now, if I continue in same way to reach my goal, I have to create 360 Parallels switch-case structures... that are crazy.

  Something like the calculation of the average of the table or matrix (zero/empty values should not be calculated on average) inside the loop or similar way would probably be the best solution.

  So, polar plot drawing is not a problem, but creating a reasonalbe average metering system is. Any ideas?

  I would also like to rotare northward to the top (0 deg), and degrees of increase in a clockwise direction on polar ground dial plate (as on the compass).

  VI on the attachment. (simplified version of the complete system)

  I have signals:

  -Wind speed

  -wind direction

  -Rotor speed

  I want to:

  -calculate the average value of the speed of the wind / rotor - ratio in sections (5 degrees, 1 degree)

  -Draw a polar path of the wind rotor/speed-ratio of averages in propotion of wind direction

  I'm using LabView 2009

  Thank you very much.

  It is closer to what you're looking for?

• How do you find the average value of all the data between two points on a single channel

  I'm tring to calculate the average value of all data points in a single field between two distinct points

  I rasthaus an illustration.

  Hi smoothdurban,

  I thought you wanted to specify the area of interest with the sliders of the band.  If you rather automatically define the area of interest based on thresholds, etc., we cannot see the interactive nature of the example I sent.

  What are the criteria used to determine the start and end of the region of interest lines?

  I would be able to type this out for you if you sent a representative data set ([email protected])

  Brad Turpin

  Tiara Product Support Engineer

  National Instruments

• Find the average value of a buffer

  Hello

  In my VI Panel, I have a digital control, a button and a digital display.

  When the user, enter a number in numerical order and press the button, the digital display should show the average value of all the past 5 values entered in the digital control, for example:

  1st entry: 10-online average = 10 (as sum = 10)

  2nd type: 0-online average = 5 (as sum = 10 + 0 = 10)

  3rd enter: 5-online average = 5 (you get the idea...)

  4 enter: 1-average online = 4

  5 enter: 14-online medium = 6

  6 enter: 2-online average = 4.4 (sum = 0 + 5 + 1 + 14 + 2 = 22, because the 1st value is thrown)

  How to write this VI?

  Thank you!!

  You can also use arrays to hold the data in a registry change and find the average value of the last five items.

  

  Good luck

• Calculate the average value

  the data that I measured changed quickly, so I want to get the average value of the data

  Don't tell me to use mean.vi, I already know.

  and I got an idea that is to add data in a table every time, then the sum of all value data and take the line of result by the number of items

  but I don't know how to do this, anyone can build a simple vi to show me? Thank you

  I enclose my vi that uses mean.vi to the average value of calc, you can remove it and help in your path, thank you!

  Do not add your data in a table that grows forever. What a waste of RAM. To calculate the average, you only need to sum and N.

  Here is a simple code to accumulate the sum of the values in a shift register and divide by the number of add operations.

  

• [Labview] I want to get the average value in each new 100 samples.

  Hello. I'm Sophie.

  I'm studying Labview for my research.

  For me, the sampling frequency is 125KHz.

  I want to get the average value in each new 100 samples.

  Therefore, I want to get an average value of 1 ~ 100th samples and store this average value. Call assets(1).

  Then, I want to get an average of 101 ~ 200th samples and store this means value, call moyen2.

  .

  .

  .

  .

  I don't know how me I want.

  Thank you

  Sophie.

  

• Calculation of the nth value highest in a group

  Hi all
  
  I was following the problem to be solved. I have a table with the following structure:

  Table emp
  EmpID number
  NAme varchar2
  DeptID number
  Salary number

  Now, to find the maximum salary in each Department, I can use:

  select DeptId,max(salary) from emp group by DeptId;

  Now to find the second salary max, I can do below:

  select DeptId,max(salary) from emp
  where (DeptId,salary) not in (select DeptId,max(salary) salary from emp group by DeptId) group by DeptId;

  But suppose I need to find the 5th or 6th salary max then this method will be heavy.
  I need a SQL query in which I can dynamically pass the parameter to calculate.
  
  Kindly help.

  Calculation of the nth value highest in a group

  In recent db versions nth_value seems to be the game.

• How the average values of RPM?

  Hi all

  I need help on the average of the values of RPM. The number of LAPS I receive is not constant and fluctuating (say, at a given SPEED) between 500 and 600 rpm. I want to enjoy these two values and averages like every second.

  Please let me know if you can help me on this.

  Here is a picture of how I have the RPM.

  

  Thank you

  Marwan

  Hello

  The average ptbypt vi is one of the best method to calculate the average as suggested earlier by for (imstuck).

  Also refer to this URL in case the VI is not available

  https://decibel.NI.com/content/docs/doc-5183

• Calculation of the average

  Hello
  
  I'm figuring the average of some values divided by ID & month.
  
  Please see test the scripts below, I use Oracle D/B v 11.2.0.4:
  
  CREATE TABLE TEST)
  IDENTIFICATION NUMBER,
  MONTH, DATE, TIME,
  CUST_NUM VARCHAR2 (4).
  RATE 1 NUMBER,
  NATUREL2 NUMBER);
  
  
  INSERT TEST VALUES (4586, 1ST JANUARY 13 "," 0001", 26.35, 78.45);
  INSERT TEST VALUES (4586, 1 JANUARY 13 ', ' 0002', 13.21, 33.33);
  INSERT TEST VALUES (4586, 1 JANUARY 13 ', ' 0003', 54.69, 79.34);
  INSERT TEST VALUES (4586, 1ST JANUARY 13 "," 0004", 99.36, 100);
  INSERT TEST VALUES (4586, 1 FEBRUARY 13 ', ' 0005', 89,63, 78.25);
  INSERT TEST VALUES (4586, 1 FEBRUARY 13 ', ' 0006', 13.11, 49.36).
  INSERT TEST VALUES (4586, 1 FEBRUARY 13 ', ' 0007', 78.63, 85.21);
  INSERT TEST VALUES (4586, 1 FEBRUARY 13 ', ' 0009' 63,22, 100);
  INSERT TEST VALUES (4586, 1 FEBRUARY 13 ', ' 0010' 22.35, 100);
  INSERT TEST VALUES (4586, 1 FEBRUARY 13 ', ' 0011', 41.11, 99,63);
  INSERT TEST VALUES (4586, 1 MARCH 13 ', ' 0012', 25.23, 45.25);
  INSERT TEST VALUES (4586, 1 MARCH 13 ', ' 0013', 13.11, 56.54);
  INSERT TEST VALUES (4586, 1 MARCH 13 ', ' 0014', 56.24, 50.00);
  INSERT TEST VALUES (4586, 1 MARCH 13 ', ' 0015', 11.23, 100);
  INSERT TEST VALUES (4586, 1 MARCH 13 ', ' 0016', 100, 100);
  Insert test values (4586, 1 March 13 ', ' 0017', 99.99, 99,63);
  
  I want to calculate the average of the rates of column 1 by id & months but the request is also a grouping of the cust_num:
  
  SELECT ID, MONTH, CUST_NUM, AVG (CASE WHERE rate1 <>0 then end rate1) avg
  OF THE TEST
  Group by id, month, cust_num
  order by 2, 3
  
  Expected results:
  
  4586, 13, JANUARY 1, 0001 48.40
  4586, 1 JANUARY 13, 0002, 48.40
  4586, 1 JANUARY 13, 0003, 48.40
  4586, 1 JANUARY 13, 0004 48.40
  4586, 1ST FEBRUARY 13, 0005 51,34
  4586, 1ST FEBRUARY 13, 0006 51,34
  4586, 1ST FEBRUARY 13, 0007 51,34
  4586, 1ST FEBRUARY 13, 0009, 51,34
  4586, 1ST FEBRUARY 13, 0010 51,34
  4586, 1ST FEBRUARY 13, 0011 51,34
  4586, 1 MARCH 13, 0012 41.16
  4586, 1 MARCH 13, 0013 41.16
  4586, 1 MARCH 13, 0014 41.16
  4586, 1 MARCH 13, 0015 41.16
  4586, 1 MARCH 13, 0017 41.16
  
  
  The average should be the same for each id and the month, can anyone help?
  
  Thank you

  Hello

  sliderrules wrote:
  Hello

  I'm figuring the average of some values divided by ID & month.

  Please see test the scripts below, I use Oracle D/B v 11.2.0.4:

  CREATE TABLE TEST)
  IDENTIFICATION NUMBER,
  MONTH, DATE, TIME,
  CUST_NUM VARCHAR2 (4).
  RATE 1 NUMBER,
  NATUREL2 NUMBER);

  Thanks for posting the CREATE TABLE and INSERT the statementsl which is very useful.

  INSERT TEST VALUES (4586, 1ST JANUARY 13 "," 0001", 26.35, 78.45); ...

  The month of the column is a DATE; do not try to insert values such as 1 January 13 VARCHAR2' in a DATE column.

  I want to calculate the average of the rates of column 1 by id & months but the request is also a grouping of the cust_num:

  GROUP BY means that, regardless of the number of rows in each group in the table, you want to only 1 row of output for the whole of the group. In this case, you won't have the output to have exactly the same number of rows as the table? If so, then do not use GROUP BY.

  SELECT ID, MONTH, CUST_NUM, AVG (BOX WHEN rate1 <> 0 then end rate1) avg
  OF THE TEST
  Group by id, month, cust_num
  order by 2, 3

  Expected results:

  4586, 13, JANUARY 1, 0001 48.40
  4586, 1 JANUARY 13, 0002, 48.40
  4586, 1 JANUARY 13, 0003, 48.40
  4586, 1 JANUARY 13, 0004 48.40
  4586, 1ST FEBRUARY 13, 0005 51,34
  4586, 1ST FEBRUARY 13, 0006 51,34
  4586, 1ST FEBRUARY 13, 0007 51,34
  4586, 1ST FEBRUARY 13, 0009, 51,34
  4586, 1ST FEBRUARY 13, 0010 51,34
  4586, 1ST FEBRUARY 13, 0011 51,34
  4586, 1 MARCH 13, 0012 41.16
  4586, 1 MARCH 13, 0013 41.16
  4586, 1 MARCH 13, 0014 41.16
  4586, 1 MARCH 13, 0015 41.16
  4586, 1 MARCH 13, 0017 41.16

  The average should be the same for each id and the month, can anyone help?

  Use the analytical AVG, not the aggregate function.

  SELECT    id
  ,        month
  ,        cust_num
  ,        AVG (NULLIF (rate1, 0)) OVER ( PARTITION BY  id
                                                 ,            month
                             )     AS avg_rate1
  FROM      test
  ORDER BY  month
  ,            cust_num
  ;
  

• calculation of the average using sql

  Hi all
  
  My table structure is
  
  --------------------------------------
  ID name notes starting_date end_date
  --------------------------------------
  
  
  workingdays = end_date-starting_date
  
  
  I had a query
  
  
  Select name, max (case when remarks = remarks then end notes).
  Max (case when id = id then end_date-starting_date end),
  AVG(end_date-starting_date) average t_action_items
  Rollup (name, end_date-starting_date) group;
  
  
  who's out like that
  
  Name of the average Workingdays remarks
  --------------------------------
  
  x 20 20 aaa
  BBB 10 20 x
  AAA 10 15
  y ccc 19
  DDD y 8
  CCC 8 13.5
  CCC 8 14.2
  
  But I need output like this, how can I do that someone please guide me
  
  Name of the remarks Workingdays
  ------------------------
  
  aaa 20 x
  BBB 10 x
  15 > x average
  y ccc 19
  DDD y 8
  13.5-> average for y
  
  
  Forgive me, I can't able to align to the right format, I think that with data you can seggregate
  
  Thanks in advance...
  
  Published by: Paappu on March 20, 2009 09:50

  Hello

  I have used WITH clause to show the result. You use just SELECT it with your table it will work.

  SQL> SELECT * FROM T;
  
  NAME   REMARK        START_DT  END_DT
  ------ ------------- --------- ---------
  Mark   Design        15-FEB-09 15-FEB-09
  Hendry Coding        08-JUN-08 15-JUN-08
  steve  Testing       29-OCT-08 04-NOV-08
  JAMES  POC           01-MAR-09 01-MAR-09
  JAMES  DOCUMENTATION 01-MAR-09 09-MAR-09
  
  SQL>     SELECT Name,Remark, SUM(work_hrs), AVG(work_hrs) FROM (
    2      SELECT name,remark ,start_dt,end_dt,SUM(end_dt-start_dt) OVER (PARTITI
  N BY name,remark ORDER by Name) work_hrs
    3      FROM T)
    4    GROUP BY ROLLUP(name,remark);
  
  NAME   REMARK        SUM(WORK_HRS) AVG(WORK_HRS)
  ------ ------------- ------------- -------------
  Hendry Coding                    7             7
  Hendry                           7             7
  JAMES  DOCUMENTATION             8             8
  JAMES  POC                       0             0
  JAMES                            8             4
  Mark   Design                    0             0
  Mark                             0             0
  steve  Testing                   6             6
  steve                            6             6
                                  21           4.2
  
  10 rows selected.
  
  SQL>
  

  Kind regards

• The problem with the calculation of the average for the recurring value

  My task is to perform analysis, where in the table have ID to which she is assigned 10 measures (1-10) and each has its own value. I have to average of this what I take AVG (as) and I want to say. However, as prompcie Will I choose the second ID and I have two measures 1-10 time what I means account for 20 photos and I want to separate Average (two - each for 10 measures). Is there any possibility of Smash it? The use of a function or collection of rehearsals ?

  
  

  It looks like this:

  
  

  column 1 | column 2 | column 3 | AVG |
  

  
  

  ID |  Nr.  result | AVG?
  

  x | 1. 200 | AVG x?

  | 2. 210 |
  

  | 3. 210 |
  

  There | 1. 210 | is AVG?

  | 2. 208

  | 3. 200

  
  

  In column 4, I want to be avarage but another for id x and another for id y?
  

  is the result you are looking for:

  

  If Yes... then avg column formula is AVG (result BY id)

• Average value of the waveform graph

  Hello everyone.

  Can I do an interval of time, where I can measure the average value of a waveform graph?

  for example the fom 0:30-0:45

  

  I have uploadet my VI
  :

  Thanks in advance

  Orlando

  
  

• Average value in a second a series of signals from the DAQ card

  Hello

  I'm trying to average signals in one second of my DAQAssistant.I am using a shift register to add all signals in a second interval and then dive out of the turn register by the number of iterations of my time loop (which I think should be the total number of samples per second-1). But when I studied the value of i from inside while loop by placing an indicator it always returns a value that is equal to my (sampling rate of DAQAssistant) / Samples as follows. This means that the average value I get something wrong, it is the average value seems within the reach of the signal I get.

  I wanted to use an array to store all the signals in a second, but I might have to increase the samples up to read the value in this case it will not be a very efficient way to store 500 data in a table.

  Any reclassification help how to get mean value over a cycle would be greatly appreciated.

  Thank you

  This is because an iteration of the loop returns a type of dynamic data that is under the hood an array of 100 samples.  The loop runs 10 times because you stop the loop after 1 second, only lasts only 1/10 of a second because she the 1000 Hz divided by 100 samples.  That's why I + 1 is equal to 10.

  Now you have 10 bays (buried in the dynamic data type) added.  Divided by 10 gets you the average of these 10 tables.  But this average is always an array (buried in DDT), but when connect you up to the average indicator, is to return only the first sample of average average array which is why your average seems essentially functional.  However, the averages of the other 99 data points (x iterations of the loop 10) are lost.

  You would be better off away from the DDT.  Just work with arrays.  Add the 10 tables to each other.  Now, you'll have an array of elements of a thousand that you can all wire to the average function in the range of statistics.  You won't have to worry about count the iterations of the loop, in summary and dividing.

  

• Read TDMS - calculate the average

  Hello

  I have data I stored in a PDM file, I want to do some calculations, such as finding the average of all of my data.

  Successfully, I have read the PDM file and linked to a waveform graph, no problem on this part.

  However, I'm stuck trying to figure out how can I access data other than just to print them on a graph.

  How could I summarize all the values to find the average value?

  I am using LabVIEW 2010.

  Thank you.

  Use the Mean.vi function under the probability and statistics.  I'm guessing that you read a wave form and you may need to remove the values of Y by using the function to get the elements of waveform.  Display code if you get stuck.

• acquire a signal and the rms value in a table every second

  Hello everyone,

  Sorry, but I am known in the world of LabView and I'm going crazy because I can't understand how to do a simple thing (or what it tends to be in my mind).

  As said by the object,
  my wish is to acquire a digital (a through the DAQmx) continuous (it's ok for this part), get the RMS (or average) of such acquired signal (thanks to the Amplitude and levels of measurement, for example) and put the value in a table (1 d); and, every second.

  In one sentence: acquire a signal, the average value, put in a table, and then restart each second. In the end, for example, the program for 1 minutes gives me 60 value in the table.

  Is someone can help me?

  Thank you in advance.

  Viviogs.

  First of all, I'm not sure that you can be sure exactly a second measurement using this technique.  If the precise timing is important, I think that you need a timed loop.

  That said, if the only problem you have is how to write the table indexed in a spreadsheet, you just need to use "Write in the worksheet file."  See here.