First - Division of polynomial

Similar Questions

• Internal ID

  Hi all
  
  I would like to create the attribute that contains the internal ID for each item in the hierarchy. How can I do this?
  
  For example,.
  Emlpoyee: internalID - EMP-00001
  First Division: internalID - EMP-00002
  Mike: internalID - EMP-00003
  Peter: internalID - EMP-00004
  SecondDivision: internalID - EMP-00005
  Steve: internalID - EMP-00006
  and so on...
  
  Best regards

  Everyone,

  It is not possible to influence the generation of somehow node ID. You can use the functionality of the feature next ID (see the Guide to DRM) to create own identifiers.

  You can query the internal ID using ID() formula. You can concatenate the return value with other property values.

  Best regards

  Hauke

• Top N group

  Hi all
  I have to create a report for 20 first Division values. DIvision and service requests come from area (we do not have access to RPD. we work with domain only)
  
  How can I display the first 20 values for each division.
  I tried with TOPN (COUNT (DISTINCT .SR "Request for Service"), 20). and
  
  COUNT (DISTINCT 'Request for services'.SR "Request for Service".) Division)
  but it is not work each division.
  
  Could you please help me on this.
  
  Thanks in advance

  Please close the thread...

• Combine data deletion of nulls

  Hi all
  
  I have a table with data that looks like this:
  
  
  

                        Co      Division           Dept
  
  1     abc      00     
  2     abc      01     
  3     abc      01020     
  4     abc      01040     
  5     abc      01060     
  
  194     abc                       0001
  195     abc                   0005
  196     abc                       0060
  197     abc                       0101
  198     abc                         01021
  {code}I'd like to combine the data so that the department values (0001, 0005 etc) populate the first 5 rows of the table in place of the null values. You can't tell from the formatting but values starting with '0001' in row 194 are in the Dept column. Thoughts?
  
  Edited by: BobH90024 on Sep 8, 2008 1:30 PM
  
  Edited by: BobH90024 on Sep 8, 2008 1:31 PM
  
  Edited by: BobH90024 on Sep 8, 2008 1:31 PM
  
  Edited by: BobH90024 on Sep 8, 2008 1:40 PM
  
  Edited by: BobH90024 on Sep 8, 2008 1:40 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

  Hello

  Here's a query that does what you requested:

  WITH     qn     AS
  (     -- Begin qn, query with divison_num and dept_num
       SELECT     company
       ,     division
       ,     dept
       ,     ROW_NUMBER () OVER
                 (     PARTITION BY     company
                      ORDER BY     division     NULLS LAST
                 )     AS division_num
       ,     ROW_NUMBER () OVER
                 (     PARTITION BY     company
                      ORDER BY     dept          NULLS LAST
                 )     AS dept_num
       FROM     table_x
  )     -- End qn, query with divison_num and dept_num
  SELECT     div_s.company
  ,     div_s.division
  ,     dept_s.dept
  ,     div_s.division_num     AS num     -- Not needed
  FROM     qn     div_s
  JOIN     qn     dept_s
  ON     div_s.company          = dept_s.company
  AND     div_s.division_num     = dept_s.dept_num
  WHERE     div_s.division     IS NOT NULL
  OR     dept_s.dept     IS NOT NULL
  ORDER BY     company
  ,          div_s.division_num
  ;
  

  You did not ask the last column (num), and you probably don't want it displayed, so feel free to remove from the SELECT the main query clause. I've included just to help illustrate this query works.

  You want to combine data from two different rows in the same table (for example, the line where division = 123 and the row where dept = 'mno') together on the same line of the result. This looks like a self-join, which is exactly what makes the main request.
  The self-join is made between two copies of all results of SB: one to get the division (div_s) and the other for the dept (dept_s).
  This query paris first division (in numerical order) with the first dept (in alphabetical order). I used the analytical ROW_NUMBER function to number each line according to the division and once again according to dept, to make the self-join. NULL values come after the actual values, as you requested.

  To test this, I used "abc company" you have published and added three more companies to test the special cases:

  COMPANY      DIVISION DEPT
  ---------- ---------- ----------
  abc               123
  abc               234
  abc               345
  abc                   mno
  abc                   xyz
  foo                   bar
  nada
  nada
  okay?             100 zebra
  okay?             200 ant
  

  "foo" is a company that's more than the divisions (1 > 0). You said that this can happen.
  "nada" is a company that has lines where Division and dept are both NULL. As you can see, there is nothing in the result set to indicate that this company still exists. You didn't say this can happen, and I don't know if that's what you want to do in this situation.
  "OK?" is a company with lines that have already have division and Dept. All data are displayed in the result set, but not necessarily as it is in the table. (For example, in the table, division = 100 is paired with dept = "Zebra", not with dept = 'ant'.) You did say that it can happen.

  Here are the results of this broader set of test data:

  COMPANY      DIVISION DEPT              NUM
  ---------- ---------- ---------- ----------
  abc               123 mno                 1
  abc               234 xyz                 2
  abc               345                     3
  foo                   bar                 1
  okay?             100 ant                 1
  okay?             200 zebra               2
  

  The situations illustrate companies 'nada' and 'OK?' may not be possible in your actual tables.
  If these situations are possible and you don't like how this request manages them, I am confident that the problem could be solved. Right after the results you want instead.

• Hide the first and the last Division in the WPF chart axis

  I want to hide the default marker of the first and the last major division in an axis of a chart of WPF. I tried to extend RangeDivisionsMode and define my own class object to the MajorDivisions.Mode property on the axis. But even when I returns a list empty in RangeDivisionsMode.GetDivisions(...), the first and the last marker is drawn.

  Thanks in advance, Jonas

  The minimum and maximum labels are transmitted separately when displaying a scale (even if technical RangeDivisionsMode custom can be used for the minor divisions).

  There is no direct configuration option to hide extreme labels, but you can achieve this effect by initializing the LabelPresenter property on MajorDivisions by a custom implementation:

  class CustomFormatter : GeneralValueFormatter {

        protected override UIElement VisualizeCore( TData value, ValuePresenterArgs args, UIElement existingVisual ) {

            UIElement element = base.VisualizeCore( value, args, existingVisual );

  var axis = (Axis)args.Context;

            Range range = axis.Range;

            var comparer = range.Comparer;

            bool isExtreme =

                   comparer.Compare( range.Minimum, value ) == 0

                || comparer.Compare( range.Maximum, value ) == 0;

            element.Opacity = isExtreme ? 0.0 : 1.0;

  return element;

        }

    }

• Polynomial function

  First of all, thanks to you in advance for reading my question and taking the time to respond. I greatly appreciate your effort.

  I have 30 lines of data. Each line represents the net amount of items sold every day.

  I created a graph 2D with these data and applied the polynomial regression for purposes of sales forecast. You can find this feature under series->-> polynomial trendlines.

  You also have the following options to order: 2, 3, 4, 5 and 6 (I chose 6). That really means this 'order'?

  Very simplified and general answer (from a non-statisticien):

  Trend curves are the "best fit" lines applied to a set of XY data that has been drawn on a diagram of dispersion. A linear trendline can be described using a polynomial function "order 1':

  y = a * x ^1 + b * x ^ 0

  (x ^ 1 = x, x ^ 0 = 1)

  Best suited for data graphics in a shape that looks like a curve will require a graphic that function as a curve, as a quadratic function (order 2):

  y = a * x ^2 + b * x ^ 1 + c * x ^ 0

  Data sites that seem to have a folding alternated in the curve, you need a higher order, such as a cubic function (order 3)

  y = a * x ^3 + b * x ^ 2 + c * x ^ 1 + d * x ^ 0

  Unless your data set is large enough, higher orders probably will not give you a more precise match.

  For more information, search for "polynomial regression function" and check out some of the statistics pages.

  Kind regards

  Barry

• First HP: Lack of Sections of first graph with steep slopes on HP

  I saw somewhere an old post on the Internet where a user was having difficulty to see the graph of y = x ^ 4 (x-2)(x-6) using a "Decimal point" display window and the "Evolutionary" method in the application of the function. The chart has not demonstrated the branch of the chart with the x origin of (6, 0). The response at the time was to use a different window or switch to advanced graphics application. I don't like either of these options, because much cheaper calculators have not this problem.

  With a little experimenting, I found that the calculator will be graphic curves where the absolute value of the slope (derivative) is less than about 375 * (Ymaximum - Yminimum) / (Xmaximim - Xminimum) where the minimum and maximum levels refer to the values specified in the configuration of the land. When the curve is steeper than this amount, the curve has holes and gaps until this value exceeds of approximately 1500 *(Ymaximum-Yminimum) / (Xmaximim - Xminimum). At this higher value, the curve is usually not in graphic form at all. These expressions are based on the study of graphs of the polynomial given above, y = 1 / x and y = e ^ x for different values of configuration of land.

  I realize with the option of touch screen on the first HP for the graphics window resizing, calculator, developers should be a little more sophisticated in how to get the calculator determine the graph. The current 'Adaptive' method is too risky for me to use unless I know a little on the chart. And the graphic progress is too slow. HP working on another option or is there maybe a setting on the computer I do not use its full potential?

  I've only used the calculator for a few days, but others who have used the calculator for many more are also puzzled. Thanks for any info. You can send our way.

  It is currently being considered. I can't say when / if there will be changes, however on the political basis of HP on 'future-looking '.

  However, graphical representation is one of those things that is "deceptively simple" because it seems to be pretty easy but is actually infinitely difficult. It has in fact been mathematically proven that you * don't * create an algorithm to be quite accurate for the same simple algebra. All graphics engines turn example is a very simple method that collapses quickly for something else then the case of some, it's well, a series of different behaviors for different types of problems in an attempt to account for different types of situations.

  The average general graphic has been done in the past was "moving pixel, evaluate and connect the dots." This works for simple things, but falls apart pretty quickly. Most of the calculators except the first on the market at the present time use some techniques of "smoothing" kind of hide the types of problems, this method can generate and generally work well for simple cases. While that hides things, the problem is he hiding things. :-) In more complicated cases, it actually makes things quite worse.

  In this simple case, most of the systems actually get the "right" result because they always assume that a big jump in values one line drawn to connect them. Result directly in other cases where it draws a vertical line to an asymtote that shouldn't be there. That's why things like Tan (x) go very often vertical asymtotes where there shouldn't be any. To try to avoid this, you need the code to make a special analysis in the case of start trying to filter false positives. It seems that in this case, it is bad filter and eliminate the line here.

  For another thing of pleasure, try the example simple "sin(e^x)" on all your systems. You will get some pretty crazy things and strange patterns here where there should not be any. The "speculative", the first will be closer, but only the grapher advanced with its graphics of interval it gets correct.

  So in short, yes - you put this to our attention. In long, graphic representation is in fact much more complicated then one might expect. :-)

• prefixes and units of first hp

  According to the manual, if you want to use a prefix with units, you select the prefix first. When I do this (after you put a value on the line of writing, of course), the prefix is indicated in brackets in the input line and the units menu disappears which is a surprise (I expect to wait until the units have been added). After that gate again the menu units and adding units, I press on enter and get a syntax error.

  This behavior is not consistent. I just tried again and the prefix appears without brackets, the unit has hooks and I always get a syntax error.

  I tried it in input mode of textbooks (I prefer RPN, but there are problems with the use anywhere but in mode 'calculator') does not. I must be missing something but have no idea what.

  Even if I'm here, nobody knows why there is not set explicitly for calculators?

  Also (you never know your luck), if someone wrote a good guide for the first HP? Whenever I pick it up, it brings me a new problem.

  Ah, I forgot to mention that the parentheses are always required if the appliance no symbol of multiplication or division.  In algebraic entry mode, you must type the brackets yourself (if the device contains no mathematical symbols as division), so that literally, you type this:

  2_(km/s)

  The manual entry mode and entry RPN mode type brackets automatically when you press the underscore character.

• First HP: error with partfrac

  I entered:

  partfrac ((2x^4-3x^3+7x^2+10x+10) / ()(x^2+3) x + 1 ^ 2) and press the Enter key and the first HP changes the denominator to:

  ((x + 1) *(x^2+3)) ^ 2 which is a different split, leading to the wrong solution for the fraction that I entered.

  I entered several fractions of this type with the same results when entering the fraction, first HP change the denominator of the quadrature of the whole denominator instead of just the last polynomial.

  Is it just me or is this a bug in the program?

  Hello

  I think that you must enter the equation with explicit multiplication, i.e.

  instead of: (x + 1) (x ^ 2 + 3) ^ 2

  Enter: (x + 1) * (x ^ 2 + 3) ^ 2

  You will also see that Joe put multiplication explicitly each number & x. This is because previous HPs like the 48/49/50 have alsways necessary.

  One of the reasons is the use of the variables of multiple characters, how do you know the difference between for example the variables XY and X * Y calculator. Most other graphical calculators allow only about 27 variables (A-Z, theta), but the HPS allows almost an infinite number of variables.

  The obligation to use the explicit multiplication is the price of additional luxuries.

• Time Division Multiplexing (TDM) Using USRP s 2943 with synchronization

  Hello

  I have two 2943R USRP.  One of them is transmitter another is the receiver. I wonder about the moment on USRPs division multiplexing. How could I implement this system? On the first slot of the Trasmitter USRP channel 0 will send the signal, receive USRP channel 0 will get the signal, on the second time slice Trasmitter USRP 1 channel it will send the signal, receive USRP channel 0 will receive the signal again. This process will goes in the order. So in detail, Ch0 of USRP0 will send the first niche hourly Ch0 of USRP1 will receive, Ch1 of USRP0 will send, Ch0 of USRP1 will receive again after the third slot Ch0 of USRP0 will send the signal. This process will be contiue until I stop VI. Signals will be displayed on the receiving party and release will signal where USRP0 Ch0 and Ch1 USRP0.   Example of synchronization is present on examples of NI Labview 2014 USRP on PPS trig. But I could not find example vi or a document on the TDM with synchronization.  You give me advice? How could I overcome this problem?

  Best regards...

  Hello again,

  I found an example on the community or my research: https://decibel.ni.com/content/docs/DOC-23677

  Can I use this paper for my purpose? Is this useful? Could you give me advice please?

  I don't have much experience on 2943R. I am trying to learn... How could I change this document for my research?

  Best regards...

• assessment polynomial vi giving inconsistent results

  I'm looking at an easier method to evaluate polynomial, rather than using formulas nodes that I currently use.  I found the "polynomial evaluation vi' who would think based on aid would be able to calculate the result of a polynomial Exhibitor multi.

  Currently, I would do something like the following in a node of the formula:

  float64 D1 = 0.387481063640E - 01;
  float64 D2 = 0.332922278800E - 04;
  float64 D3 = 0.206182434040E - 06;
  float64 D4 = - 0.218822568460E - 08.
  float64 D5 = 0.109968809280E - 10;
  float64 D6 = - 0.308157587720E - 13;
  float64 D7 = 0.454791352900E - 16;
  float64 D8 = - 0.275129016730E - 19;

  DC = (V * D1) +(D2*V**2) +(D3*V**3) +(D4*V**4) +(D5*V**5) +(D6*V**6) +(D7*V**7) +(D8*V**8).

  I tried the same calculation by writing a little VI which used the polymomial assessment vi and get seriously incorrect results.  (my vi attached).

  Research in the evaluation of the polynomial vi, honestly, I don't know how it is supposed to work, unless he's trying to do something completely different that I do.   (With the help of labview 2015)

  I'm open to suggestions here.  Thank you!  Mitch

  The first table is the constant term (V ^ 0 = 1), if you need to add an element that is equal to zero in the table of coefficients.

  The polynomial is defined as:

  DC = D0 + (V * D1) +(D2*V**2) +(D3*V**3) +(D4*V**4) +(D5*V**5) +(D6*V**6) +(D7*V**7) +(D8*V**8)

  In your case, D0 = 0, but there still need to be there.

  

  ... and are not the constant diagram EXT. As you can see about to constraint, it will be converted in any case to DBL.

• Test more to see if it s first WITHOUT using the function Q & A... Possible?

  We challenge each other in my place with LabVIEW challenges. So I threw a bunch of examples for this weeks challenge which requires finding numbers first, but put aside from a hack...

  Well, take a look at my code for the principal sum of the Presentation of NOR-week 2016. The two sieves (Eratosthenes, Sundaram) are not directly based on Q & R and could easily be rewritten to not use it (for example by replacing the innermost loop with a while loop and put an end to a comparison etc...) Try it!)

  Of course you can also write your own Q & R of other primitives, for example using newton-raphson. I have a writing very long ago for one of the coding challenges to support populations of arbitrary resolution.

  You can also use the ordinary division and see if the result is equal (or enough, due to the limitations of the DBL close) to the result being rounded up to the nearest whole number.

  Of course the primality tests of a very large number (lots and lots of numbers) is a specialty of mathematics.

• Issue of signal processing: first slope of tangetial derived vs?

  Hello world

  I have a question about a strain signal processing...

  Do the terms of the "first derivative" and "tangential slope" essentially refers to the exact same property; It is the change in the strain (y) compared to the change in time (x) in a precise point in time...

  I determined the rate of development of strains of calulating the first derivatives all points of data within segement signal of interest and obtained the average value dx/dt for the analysis... Is this the same as "means tangential slope? Or they the different?... My base, understand that they are one and the same... Could someone please confirm or correct this?

  Any feedback is greatly appreciated.

  Kind regards

  Jack

  The tangential slope of a curved line represents the slope of the tangent line to the curve at a point.  This can be calculated by taking the first derivative of the function and the evaluation to the point.  Yes, to all intents and purposes, "first derivative" and "tangential slope" refers to the same property.

  I guess that the average tangential slope could be calculated by taking the average of the evaluated derivatives.  A quick Google search confirms this.  I am a physicist, not a guy from the DSP, so maybe my opinion is not correct.

  You can also watch how you calculate your drift.  The default LabVIEW method is a simple calculation of two points which is very sensitive to noise.  If you have a fairly new version of LabVIEW, there included functions that calculate the Savitzky-Golay coefficients which you then use with the convolution filter to determine derivatives at each point. Savitzky-Golay method essentially computes a method of least squares adjustment to a polynomial to each point and takes the derivative of the polynomial.  This greatly reduces the noise.  Note that the coefficients Savitzky-Golay may be used to generate any order, provided you use enough points for the convolution.  The default value is an order of zero, or smoothing filter.  If your version of LabVIEW is not new enough to contain the Savitzky-Golay coefficient generator, you can do it yourself fairly easily.  A quick search on the internet for "Coefficients of Savitzky-Golay" should give you the formulas.

  However, as you take the average of a lot of points if do you or not will depend on how much noise your data contains, how many points are your average, and how many resolution/precision you need.

  Let us know if you have any other questions.

• Why the division operator give me different results in different screws?

  Hi all

  I'm quite the LabVIEW newbie, so please forgive me if it's elementary.  I have a signal that I'm acquisition.  The signal is fairly low amplitude (.01-0,1 V).  During each acquisition, I share the values of the sample defined by another few (0.047) using the division operator.  I see inconsistent results and I am puzzled as to why.

  In ex1, which I built from scratch for this post, everything works as expected.  I can confirm with the debugger that every reading of the sample overall is well divided and the average, max and waveform graph look like I expect.

  When I use a similar construction in my real application, however, the division often results in the INF file, and when I look with the debugger I see after fracture of the values of the signal... just don't make sense to me (x 2).

  I thought I must be missing something in the real application associated with split and merge multiple signals, so I ripped out everything except the Division (ex3).  Although this code looks a lot like the ex1 works well, the product always division infs and strange results.

  These three examples receive the same signal.  My best guess is at this point that the built-from-scratch example is force double passes to the operator of division "the right way" and that the examples of dysfunction are force double in a different way, incorrect.  I tried to delete and re-create the signal path in the examples of dysfunction without result.  My problem is that I don't know enough about the LabVIEW data types to find out how to impose the appropriate constraint.

  Can someone point me in the right direction for a solution?  I would be very happy to help.

  Your first image divides your signal of 0.047. Your second and third images are 0.047 dividing your signal. Reverse your son in fracture on image 2 and 3 knots, and I think you should be ok.

• Divisions of the auto and Auto precision in graphs

  Hi all

  Just a question about the functioning of divisions and accuracy on a line graph when the value VAL_AUTO.  I know what is happening on the scale when it is done automatically, but what is the basis of precision auto and auto divisions?  There are default values?  I tried to search it in the ICB help with no luck.

  Thank you

  Judy

  Hi Judy,.

  Basically auto settings mean only that the CVI will try to pick what he thinks are the best settings for the divisions and accuracy. The axis of the graph will display divisions as much as possible without the numbers being too cramped together. The number of divisions is calculated first, then we Auto-precision. First, we check to see how accurate would be necessary between divisions because the divisions are all equidistant. If 0 is necessary (i.e. divisions are numbers integers apart) then we look at the values min and max of the axis and determine who requires as accurate. There is a fuzzy logic too involved to ensure that values such as 1/3 show that the 0.3333333333333333333 or something stupid.

  There are no default values such as these are calculated on the fly, based on the size of the chart and the min and max values of it.