Windowing function - pool

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• The power spectral density function counts inaccurate amplitude caused by the window function?

  I'm new to this forum, so please let me know if this would correspond better to a different discussion forum.

  Here's the question:

  I would like to know if the power spectral density function ("FFT PSD for 1 Channel.vi") automatically compensates for the loss of the amplitude of entry caused by the window function.  In other words, is a specific window correction factor applied within the PSD vi or do I apply manually?

  Details of the background:

  I tried to answer the question myself by generating a sine wave sampling, it as it is periodic in record time (i.e. 0 to each end of recording time).  The frequency of the sine wave was such that the frequency would exactly correspond to a spectral line in the PSD.  Then I generated the PSD of the sine wave twice: once using a Hanning window and once using a rectangular window (not on average in both cases).  The rectangular extent of the PSD with windows to the frequency of the sine wave is 1.5 times the size of the PSD with a Hanning window applied.

  The experience above indicated to me that a manual setting of the PSD output for the function of window was necessary, however, I repeated the above experiment using random vibration data and does not clear 1.5 x factor.  I have also been informed by his colleagues that the PSD should set for the window function.

  Thank you for your comments.

  Spectral leakage.  When you use a finished sample data from the spectrum resulting is the convolution of the spectrum of the signal as if it extended indefinitely in time with the spectrum of the window.  Even if you do not use a window function, you actually have a rectangular window the same width as the sample size.

  Draw out of the VI PSD with all style of trace to show points to the data points. Turn off Auto scale on the X axis, and expand the graph around your pic. Look at the results of different windows.  In any case, there are several values non-null.  With actual sampled data of limited duration, you will never get the idealized line spectrum.

  If summarize you the output spectral value remains close to 3.2 for all windows.

  Lynn

• I want to go back to my default windows functions

  I played a bit in turn windows functions power switch. I want everything back to default but do not remember how they were originally.

  Hello

  I suggest you try a system restore to the date before you missed it with rotating features on or off...

  Note: When you perform the system restore to restore the computer to a previous state, programs and updates that you have installed are removed.

  To run the system restore, you can see the following link.

  How to repair the operating system and how to restore the configuration of the operating system to an earlier point in time in Windows 7:

  http://Windows.Microsoft.com/en-us/Windows7/system-restore-frequently-asked-questions

  Hope this information is useful.

• get the error ORA-30483 (window functions not allowed herevv)

  Hi all

  Oracle version: 11.2.0.2.0

  
  

  with Table_dm AS

  (select 1 month_no, "wk1" week, DM_AMT 120, 300 GRoss_Amt, Week_no 4, Gross_qty 12, 1000 dm_adj_total double

  UNion all

  Select 1 month_no, "wk2" week, DM_AMT 120, 300 GRoss_Amt, Week_no 4, Gross_qty 12, 1000 dm_adj_total double

  Union of all the

  Select 1 month_no, "wk3" week, DM_AMT 120, 300 GRoss_Amt, Week_no 4, Gross_qty 12, 1000 dm_adj_total double

  Union of all the

  Select 1 month_no, "wk4" week, DM_AMT 120, 300 GRoss_Amt, Week_no 4, Gross_qty 12, 1000 dm_adj_total double

  Union of all the

  Select 2 month_no, 'wk5"week, DM_AMT 200, 400 GRoss_Amt, Week_no 5, Gross_qty 20, 1000 dm_adj_total double

  UNion all

  Select month_no 2, "wk6" week, DM_AMT 200, 400 GRoss_Amt, Week_no 5, Gross_qty 20, 1000 dm_adj_total double

  Union of all the

  Select month_no 2, "wk7" week, DM_AMT 200, 400 GRoss_Amt, Week_no 5, Gross_qty 20, 1000 dm_adj_total double

  UNion all

  Select month_no 2, "wk8" week, DM_AMT 200, 400 GRoss_Amt, Week_no 5, Gross_qty 20, 1000 dm_adj_total double

  UNion all

  Select month_no 2, "wk9" week, DM_AMT 200, 400 GRoss_Amt, Week_no 5, Gross_qty 20, 1000 dm_adj_total double

  )

  Select month_NO, GROSS_AMT

  (select

  mONTH_NO

  sum (first_value (GROSS_AMT) more (PARTITION MONTH_NO)) Gross_amt

  of table_dm

  Month_no group

  )

  get the following error

  "ORA-30483: window functions are not allowed here."

  The value of Gross_Amt must be the total of the Group month_no gross_amt (the Gross_Amt would be the first value in each month_no

  the value of Gross_Amt must therefore 700 in this case.

  Please suggest.

  AB

  Thank you very much, SY, is really a useful solution<>

• Scope of windowing function literal with filter Analytics

  Hello
  I use an analytical function and try to understand the function of windowing. I may be off-the-mark on it, then please let me know if it works just not how I think or if I implemented correctly.
  using an analytical function,
  
  http://download.Oracle.com/docs/CD/B14117_01/server.101/b10759/functions001.htm#i81407
  -----
  with ETRUBANS like)
  Select 'aaa' groupingColumn,
  1 numvalue
  1 paramvalue
  miscValue "ooo."
  of the double
  Union
  Select 'aaa' groupingColumn,
  1 numvalue
  1 paramvalue
  miscValue "hhh".
  of the double
  Union
  Select 'aaa' groupingColumn,
  1 numvalue
  2 paramvalue
  miscValue 'nnn '.
  of the double
  Union
  Select 'bbb' groupingColumn,
  2 numvalue
  1 paramvalue
  miscValue 'TT '.
  of the double
  Union
  Select 'bbb' groupingColumn,
  2 numvalue
  2 paramvalue
  miscValue "qqq".
  of the double
  Union
  Select 'bbb' groupingColumn,
  2 numvalue
  2 paramvalue
  miscValue 'ppp '.
  of the double
  Union
  Select 'bbb' groupingColumn,
  2 numvalue
  3 paramvalue
  miscValue "zzz".
  the double)
  Select groupingColumn,
  Sum (numvalue) on summedNoFiltering (groupingColumn partition),
  sum (case paramvalue when 1 then 0 otherwise end numvalue) on (groupingColumn score) summedWithFiltering.
  sum (case paramvalue when 2 then numvalue when 2 then numvalue 0 otherwise end) on summedMoreFiltering (groupingColumn partition).
  miscValue
  of ETRUBANS;
  /
  -----
  
  GROUPINGCOLUMN SUMMEDNOFILTERING SUMMEDWITHFILTERING SUMMEDMOREFILTERING MISCVALUE
  -------------- ---------------------- ---------------------- ---------------------- ---------
  nnn AAA 3 2 1
  AAA 3 2 1 ooo
  AAA 3 2 1 hhh
  BBB 4 2 8 qqq
  BBB 4 2 8 ppp
  BBB 4 2 8 zzz
  BBB 4 2 8 ttt
  
  7 selected lines
  -----
  -----
  
  Now this
  sum (case paramvalue when 1 then 0 otherwise end numValue) on (groupingColumn partition) is exactly what I want, so the question is, can I write the above analytical in a way that I could window autour only these paramValue == > 1
  
  in looking at http://download.oracle.com/docs/cd/B14117_01/server.101/b10759/functions094.htm#i89943 it seems that you could do something similar if it is an interval of time, is possible to do any literal?
  
  
  something like this obviously doesn't work
  Sum (numvalue) over (partition by previous groupingColumn by paramValue Place1 order)
  
  the windowing function is only with respect to filtering by a set of lines instead of filtering of values?

  I see. Do not worry, sum(*case*...) over (...) is preety "natural." Of course it will affect performance slightly because it must apply the case to each line in the window by comparing it to sum (...) over (...).

  SY.

• Rotate or resize plu viewerno picture of the Windows function work

  I can't resize picture or rotate continuously in Windows Photo Viewer.  Even though I have these functions in another program during the recording of My Documents, my pictures, pictures back to the original size and rotation.  How can this be repaired?  I use Office 2003 o, Windows XP on HP DC5750 computer with lots of memory.  Help!

  Maraarto

  I can't resize picture or rotate continuously in Windows Photo Viewer.  Even though I have these functions in another program during the recording of My Documents, my pictures, pictures back to the original size and rotation.  How can this be repaired?  I use Office 2003 o, Windows XP on HP DC5750 computer with lots of memory.  Help!

  Maraarto

  ==============================================
  What is the exact name of the viewer you are using?

  If you are referring to Windows Picture and Fax Viewer... it made
  not a resizing function. You can zoom in to look at one, but that
  cannot be saved. It has a rotate option and that
  must be permanent.

  If you make resize them and rotate in an Image functions
  Editing program... the result should be permanently recorded.
  Try... Save under... and the modified version of the give a new name.

  To resize... the free ImageResizer PowerToy can be very useful:

  Click on the following link and the left click of the
  PowerToys tab...

  Windows XP downloads
  http://Windows.Microsoft.com/en-us/Windows/downloads/Windows-XP

  (FWIW... it's always a good idea to create a system)
  Restore point before installing software or updates)

  Download and install: ImageResizer.exe
  (Filename: ImageResizerPowertoySetup.exe)
  (does not work on Vista)

  Then, you can open any folder containing
  images and you will have an option to resize.
  Just right click the selected image files and
  Choose resize images in the menu. You
  can select a picture or an entire group.

  The program will place the resized in copies
  the folder with your originals.
  (Tip: * never * overwrite your originals)

  To ensure that images in both portrait and
  landscape orientation are resized to the
  same dimensions... go to... Advanced...
  and enter the largest number in these two areas.
  IOW... for 600 x 800... Enter 800 in these two areas.

• Some Windows functions do not work

  Good time of day!
  After I removed some programs (I don't know which) I have following problems with Windows XP:
  (1) Windows help works - I push the button and nothing happens.
  (2) I can't edit user - empty window accounts.
  (3) IE8 does not work properly, and when I want to reinstall it there is an error: BAD POOL CALLER stop 0 x 00... C2 (0 x 0... 40, 0 x 0... 0, 0... 80 x 00, 0 x 0, 00)
  (4) it seems that other computer programs to run correctly.
  What can I do?
  Thank you in advance.

  Really there is not enough information here for you to see something else that speculate on things to try it may work sometimes maybe.

  You have now or have you ever used third-party applications on your system where the product description includes descriptive as sentences:

  cleaner, mechanic, detective, doctor, heal, optimize, Inspector, clean, tune up, speed up, fix up, compact, compress, faster, power, boost, boost, gum, muncher. one click fix, new, intuitive, errors, stop crashes, stop errors, improves, allows you to save money, risk free, guaranteed or any third-party program that has an icon that looks like a gear, pinion, belt holder, key, key, screwdriver or plunging arrows?  These things like break help and Support.

  It is usually a simple matter of reinstalling help and support, but I've seen ever of any committed Microsoft Support Engineer 'expert' to describe the process.  I have instructions to do so.

  Your account of just user page say "User accounts" in the title bar and have just the rear buttons, forward and home?

  Click Start, run, and in the box enter orders following one at a time.  Click the OK button to execute each command one at a time.

  regsvr32 jscript.dll
  regsvr32 vbscript.dll
  regsvr32 /i mshtml.dll (it's a look of slash)

  The last order for mshtml load the DLL but can also contain a harmless warning depending on your environment.

  View look now your user accounts.

• No access to windows functions.

  Recently, I bought a set of 4 programs dealing with speed PC, update drivers, disk optimizer and spy protector and malware and after executing all as it seemed them to remove a large number of programs and data, when I noticed that I couldn't stop him. A lot of my programs installed had disappeared when and when it restarts, including all the backup system and restore data was missing too. As those which he created was left. At that time I could not access the basic functions such as assistance and access to control panel, Windows Explorer, open network, etc. because he had no path etc or I didn't have permission to do. As my laptop was my own I never used a higher function access password so I was surprised to see what happens when he asked for it. These programs have been a Microsoft partner I've ever done a backup of my system before I was running them.

  My question is how can I access my top feature when I have never protected functions by a password? I really need help because I am retired and have no funds to be considered for the service. I have also no disk or the backup of the Windows 7 upgrade, because originally when I bought the laptop it came with Windows Vista on it and the drive is long gone, many years ago. Can someone help me please! Thanks for all the ideas... Don't forget, I have no installation disc. Thank you once again...

  In your new user, go to the control panel and select users.

  From there you can see the status / type of each user and make changes.

  Regarding the copy from one to the other, you'll need to Google, I'm really swamped at work and need to get back to the things that I should do.

  Have fun and don't forget that Mr. Google knows everything.

  Bob

• How to delete sounds from a windows function

  How to change a sound scheme do not play all of the sounds for a paarticular function (i.e., output windows)?

  Tab control panel, sound, sounds

  Select the item in the list of events then [below which] together sounds against zero so that the entrance [click the drop-down list, scroll to the top of the list & select None].

• "How can I get Windows ' function Turn on or off ' to answer?

  When I open the tour function turn on or off the menu in Windows 7 Ultimate, nothing appears in the box that opens. What can I do?

  Microsoft has published an article in the knowledge base for this problem

  http://support.Microsoft.com/kb/931712

  If the problem is not resolved, you can try the methods in this article

  http://www.Raymond.CC/blog/fix-blank-or-empty-list-in-Vista-turn-Windows-features-on-or-off-optionalfeaturesexe/

  CheckSUR running results not additional problems, but I can't tell if the registry changes suggested works for Windows 7.

• Next Image in the pop-up window functionality

  I want to create a "next image" function in a pop-up window, a lot of the way it's done on this page:
  http://www.kovalenkohale.com/Folio/institutional_white_hall_08.htm
  
  It seems they use all just some kind of script to swap an Image that are familiar with to me. But I can't figure out how do it with the static 'next' button. I don't know I'm missing something really simple. Suggestions?
  
  -Jesse

  Yes, it is certainly the most elegant way to do it, reusing the page HTML and changing just the image. The page you cite, JesseLY, uses a simpler approach. Another page is used for each image, so "next" and "previous" are simple HTML links.

• "Stop" Windows function does not work correctly

  My windows stop does not. I can only close by manually pressing the power button or by Log off-change user-windows stop - stop.

  Pls help.

  Hello

  It's not easy to say why the closure works doesn t work.
  But above all harm or damage registry entries are responsible for these issues.
  You can try to use the System Restore tool to roll back the OS to the beginning.

  In addition, you can consult the Microsoft document that described the shutdown problems in Windows XP. It s useful. Check it out.
  http://support.Microsoft.com/kb/308029/en-us/

• I can't run Chess Titans for Vista professional after you install using the Windows function.

  When I go to chess programs running I get an error message in Chinese, trying to run Chess Titans for Vista Business

  I uninstalled and re installed 3 times.

  I have no other problems with Vista

  Hi Vicees,

  Welcome to the Microsoft Answers site!

  Mahjong Titans and Chess Titans are included in Windows Vista Home Premium and Windows Vista Ultimate as premium games. You may need to upgrade to Windows Ultimate for this game.

  To activate the other games on Vista business, you can follow the steps below.

  Access the link below for more information, who said that the games mentioned above are only available in Windows Vista Home Premium and Ultimate.

  http://www.Microsoft.com/Windows/Windows-Vista/features/Games-Explorer.aspx

  To activate the other games on Vista business, you can follow the steps below.

  1. click on start
  2. click on Control Panel
  3. click on programs of
  4. under programs and features, select features toggle Windows
  5. check the box games
  6. click on OK

  Concerning
  Varun j: MICROSOFT SUPPORT
  Visit our Microsoft answers feedback Forum
  http://social.answers.Microsoft.com/forums/en-us/answersfeedback/threads/ and tell us what you think

• Streaming Windows function stalls when you watch Xfinity - especially MSNBC and now CNN so

  I assume that it is a matter of Windows because I am working on a Toshiba Satellite with Intel Pentium CPU B940 2.00 2.00 GHZ GHz (dual processor), 4 GB of memory and by the looks of the monitor resource, everything works correctly.

  Neutral is not a problem of buffering... programs can be blocked for 20 minutes and then a commercial comes on and then it crashes again. This does not mean that the system takes to every commercial, just that from time to time a salesperson can run. This problem occurs with both IE and Google Chrome.

  Now I think Video card - except, I can see network activity on the resource monitor is flat.

  Thanks Kal,

  It turns out that the problem was / is with Comcast. I thought after the last weekend of 2Mbps they had fixed system there and they had 25 Mbps churning... but then, I checked after validation and in fact they go back up to 2 Mbps and more slowly...

  Best regards

  AB

• Anlytical &amp; Windowing function logic question

  All,

  Last question, I promise you

  
  I have often wondered why the below SQL never works how I think,

  You would think he would return the average value on Monday and Tuesday, according to the partitioning parameters (i.e. the ddate + 1 offset), but it doesn't!  He only brings the average for Monday.

  Anyone know why?

  For the query wait below:

  1 av_measure_value_mon = 5 (which does)

  2 av_measure_value_tue = 6 (which it doesn't not it returns 5 (of Monday))

  WITH tblData AS
  (
      SELECT  1 AS measure_value, TO_DATE('01/01/2015', 'DD/MM/YYYY') AS ddate FROM DUAL UNION ALL -- Thu
      SELECT  2, TO_DATE('02/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Fri
      SELECT  3, TO_DATE('03/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Sat
      SELECT  4, TO_DATE('04/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Sun
      SELECT  5, TO_DATE('05/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Mon
      SELECT  6, TO_DATE('06/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Tue
      SELECT  7, TO_DATE('07/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Wed
      SELECT  1, TO_DATE('08/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Thu
      SELECT  2, TO_DATE('09/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL  -- Fri
      SELECT  3, TO_DATE('10/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL -- Sat
      SELECT  4, TO_DATE('11/01/2015', 'DD/MM/YYYY') FROM DUAL UNION ALL -- Sum
      SELECT  5, TO_DATE('12/01/2015', 'DD/MM/YYYY') FROM DUAL           -- Mon
      
  )
     SELECT ddate,
            TO_CHAR(ddate, 'Dy') AS dday,
            av_measure_value_mon,
            av_measure_value_tue
       FROM (
         SELECT   ddate,
                  ROUND(AVG(measure_value) OVER ( PARTITION BY TO_CHAR(ddate, 'Dy')), 2) AS av_measure_value_mon,
                  ROUND(AVG(measure_value) OVER ( PARTITION BY TO_CHAR(ddate + 1, 'Dy')), 2) AS av_measure_value_tue
            FROM  tblData
      )
      WHERE   ddate = TO_DATE('12/01/2015', 'DD/MM/YYYY')
  ;
  

  Hello

  Analytic functions, perhaps not the best solution for this problem.

  For this problem, you might be better off using the aggregate AVG, not the analytical function, as this function:

  WITH got_avg AS

  (

  SELECT TO_CHAR (ddate, "Dy") AS the dy

  ROUND (AVG (measure_value)

  2

  ) AS avg_measure_value

  OF tbldata

  GROUP OF TO_CHAR (ddate, "Dy")

  )

  SELECT t.ddate

  , TO_CHAR (t.ddate, 'Dy') AS dy

  a0.avg_measure_value AS avg_today

  a1.avg_measure_value AS avg_tomorrow

  OF tbldata t

  JOIN got_avg ON a0.dy = TO_CHAR (t.ddate, 'Dy') a0

  LEFT OUTER JOIN got_avg ON a1.dy a1 = TO_CHAR (t.ddate + 1, "Dy")

  WHERE t.ddate = TO_DATE (December 1, 2015 ', "DD/MM/YYYY")

  ;