Matrix subtraction

Similar Questions

• a matrix subtracted by another gives a scalar value?

  Hello

  I implement an algorithm, method of recursive least-squares. Something was wrong with the matrix subtraction. This node below sets the context help gives a scalar value. It should be a matrix, anyway.

  

  How can I solve this problem?

  Thanks in advance.

  Chuan

  OK, so somehow messes up code matrix - good discovery/observation Feedback node.  Thank you for sending the 'example '.  Also, thanks for providing the context for this code.

  Bob Schor

• Function MATLAB Detrend in DIAdem

  Hello

  I'm trying to pre process certain data for the treatment of the fft in Matlab, I would use the Detrend function and I was wondering if it's something similar in tiara.

  I use DIAdem 2012

  Thank you

  Essentially in Matlab Detrend on a simple matrix subtracts the linear regression of each data value line in a table.

  For example, if you have a table a [2,3,5,7,5] and you had to he relaxes in MatLab, it would equal detA [-04 - 0.4, 0.6, 1.6, -1,4].

  If you subtract A detA you will get A-detA [2.4, 3.4, 4.4, 5.4, 6.4] which is exaclty same find the linera for optimal adjustment to A line.

• Storage of certain values, but not all

  Hi all

  I had trouble putting implement this: store a few values of some iterations of the loop as reference and use the reference to subtract any new value produced of the iterations of the loop later.

  For example:

  My sensor generates a table (size: 768) by timed loop iteration.

  I want to generate an array of background reference to iteration to iteration #220 #201. Currently I use the stacked shift (shift 20 saved stack) register to store the array generated by my sensor. The final basic table is averaged over 20 registees shift tables:

  Background reference table = (array array 1 + 2 +.. .array 20) / 20

  I want to remove this reference table background of table all collected subsequently the.

  new table - (table table 1 + 2 +.. .array 20) / 20

  The new table can by any array to a later iteration of the timed loop (#221 or beyond).

  In other words, I can't generate a table of fixed reference to normalize the data in real time, I've gotten. And the fixed reference table is harvested in the same channel that data in real time.

  How can I do this? (I tried the case structure over the stacked shift register, but it does not work...)

  Thank you!

  What you want to do is not clear.  Tell me if that's what you want to do:

  • Each iteration, get 768 points in a table "sample".
  • Throw sample 1 to 200 bays.
  • Calculate the average of berries sample of 201 to 220.  Call this average table of sample.
  • For all the "future" sample bays (what you want), record the Array - table of average sample sample.

  Is this correct?  If so, your algorithm can be expressed as a loop While (each loop Gets the data in a table in the sample) within which there is a Case statement to which is connected the index of the loop ('i').  If you increment 'i' before you wire this switch of case, the entries of your case will vary from 1... However, many samples you take, what makes easier "metering".

  Create the following cases:

  • .. 200 (which means that it is<= 200).=""  this="" is="" the="" "do="" nothing"="" case="" where="" you="" throw="" the="" data="">
  • 201, 219. It's "amounts Accumulate in the bays of the sample in a shift (initialization of the registry to an empty array) register.
  • 220 add the final sample, divide by 20 and save (in the same shift register) as average sample table.
  • 221... take your sample matrix, subtract table of average sample (of the shift register) and do what you want to do with your referenced sample.

  If it's your algorithm, it is very simple to implement (as you can see).  If you want to do something else, you will need to tell us specifically what you want to do, but maybe with the description I provided only, you might be able to understand for yourself how vary the algorithm.  If you're still stuck, clarify what you have tried (this is very useful if you attach your code, which means a VI (not an image, please, if this is an 'executable image', as will us want to try it and it ourselves).)  Among other things, the ambiguity in the description of Word of the algorithms are usually easier to understand by looking at the code.

  Bob Schor

• Subtract the average of a matrix of each element

  Hello

  I make a principal components analysis I have an original power of real matrix a matrix of covariance which gives the average to one of the nodes and want that subtract from each element of the matrix to form a new matrix. If it's hard to connect to the average of the covariance matrix is it possible just to find the average of the original matrix, and this by subtracting each element of the matrix to form a new matrix.

  Thanks for your help

  Concerning

  Canalian

  The average of a 2D array is simply the sum of all the elements, divided by the number of items (= the product of the dimensions).

  All you need is the following (works for arrays with more than 2 dimensions):

  

• All the diagonals of a matrix

  Hello! I want to find all the diagonals of a matrix. In the attachment, I m trying to shuffle column every time while the lines remain constant, so the first element must be rank num:01, then find the other elements of this refrence. The problem I m facing right now is that I do not m vectors with [1 diagonal, diagonal 2, diagonal3...] I get only last diagonal with 2 elements. I f I can flag out of the loop, it makes 3D, but the output remains the same and I m unable to separate all the diagonals as independent vectors. An iteration should give all elements like vector and then on the other iterations another vector, but I want to treat independently thereafter. For 4 x 4 matrix, there are five diagonal leading to 5 vectors I want... they're all 1 - D.Hope, that I managed to pass the question. Kindlt see vi which I enclose.

  I looked a bit the problem differently.  The number of diagonals is given by the number of columns less 1 plus the number of lines less 2. The clues to apply to Get diagonal matrix function also systematic, regardless of the size of the array. This model can be generated by adding or subtracting 1 to the line or column index appropriate without changing the program for each dimension table.

  I presented the output as clusters of the table table.  By putting each diagonal matrix in a cluster and then build an array of clusters, the individual tables of diagonals can have different lengths.  Because arrays in BT are of arbitrary length, you have no need to create a flag for each possible diagonal.  I ran my VI with 24 rows and 55 columns without changing anything, but the values of the entry of the size of the controls.

  I also added a delay in each iteration.  The execution of thousands of iterations per second is rather pointless.

  Lynn

• Value store on button click for the subtraction of the background

  Hi people,

  I am very new to labview so I hope you'll bear with me.

  I am acquiring data on intensity of a camera permanently in a while loop, turning it into a matrix 1024 x 1 and display them in a graph.  I need a way to subtract the background of the camera signal and display the rest.  In a programming language wrote that she would go something like:

  BG = 1024 zeros

  If (Button Pushed)

  BG = current frame

  on the other

  do nothing

  new_sig = current image - bg

  I tried case structures, global variables and shift registers, but none who seem to work.  I am somehow at the end of my rope.  I would like to know if there is any other info, I can provide.

  Thanks for your help!

  Something like that?

  

• Cannot add or subtract from the choice of backup discs

  I can't find how to add or subtract from the disks to use for storing upOne of my disks (3) is complete and I want to use new selecta. the preferences window is not resized

  IN aid, he said:
  «If you already set up Time Machine, your backup disks are listed, and information on each disc of the backup is displayed.» To select, add, or remove backup disks, click Select Disk or add or remove the backup disc. »

  I don't see this option in preferences:

  

  

  Simon,

  Scroll down in the window pane to display the add/remove disk backup option:

  

  

• Transpose lines / columns entered for Matrix

  Hi all

  Read a few pages on the forums of the community about me little challenge, but come to the conclusion that using the OFFSET would be the way to go, but I'm struggling with the syntax. Maybe, I'm thinking of it (Note: similar to copy paste n + transpose into excel). The idea is to, first, build the frame of the matrix by using the information in table 1 and 2 below, then laster, fill the inter connection of cells with the data of table 2.

  The first step is to transpose the first two columns of table 2 for the columns in a table (highlighted) two first is OF 2 + is the main reference OF-3 and this is the main reference and so on.

  The number of entries in table 2 will increase with time, so it's easy to update with here simple fill.

  Played with "SHIFT" without success - based on a similar problem posted on an earlier version of numbers / iWorks. So, I am convinced it can be done this way - of ideas or suggestions would be very welcome.

  Thanks in advance

  Perry

  

  Select the source table (shifts right in your screenshot), then select the menu item "Table > transpose the rows and columns."

  now, select the area you want to move, copy

  now select the destination, the dough

• With the help of check box in number to add/subtract a value of 0.5

  Hello

  I use a formula that calculates working hours daily and then subtract a half hour for lunch if a check box is selected. The formula applies with the exception of the time 0.5 being added or subtracted. Any ideas? The box strives to subtract the Boolean value (0 or 1), I just need this value to be represented as 0.5 If you get my drift...

  Thanks in advance!

  Tender Hello,

  

  Formula in D2 (fill down)

  = B2−a2−if(C2,"0.5H","0h")

  Kind regards

  Ian.

• I have a gen apple 1 dot matrix printer and I need a driver software for it

  I have a matrix printer of gen 1 Apple and I want it to work with my windows computer but I can't type good driver software.

  does anyone know of a good driver for the printer matrix apple for windows?

  What type of port is has a 'printer by points Gen 1 Apple?  If it has a serial port Apple, you may have a secondary problem is that it connects to a typical Windows PC?

• Hi, I recently bought numbers in order to create a commercial newspaper. I'm the pen and paper. I need help to create a formula. A purchase column determines if the entry price column is subtracted from the price of output column or output subtracted

  Hi, I recently bought numbers in order to create a commercial newspaper. I'm the pen and paper. I need help to create a formula. A purchase column; Determines if the entry price column is subtracted from the price of output column (buy) or subtracted from (Sell) entry exit. Thank you for your help

  Hi B',.

  Buying and selling in column B

  Price of entry in column c.

  Exit in column D price

  Formula (and outcome) in column E

  If the column will B always contained 'Buy' or 'Sell', it works. It is default to a calculation of 'sell' if sale or has been specified.

  E2: = IF (B = "Buy", D - C, C - D)

  If you want to delay the calculation until the amounts entered in C and D, use this version:

  E2: = IF (OR (LEN (C) < 1, LEN (D) < 1,"", IF (B = "Buy", D - C, C - D) ")

  If you want to delay the calculation until all three ducks are on a line (B contains buy or sell, C and D contain both data), use this version:

  E2: = IF (OR (LEN (C) < 1, LEN (D) < 1,"", IF (B = "Buy", D - C, IF(B="Sell",C-D,) "" ")))

  Third version used in this table.

  

  Kind regards

  Barry

• Premium HP: HP Premium - problems with adding an additional column to a matrix

  I have version 2015 7 28 (8151) firmware and can not be updated any further because I have only the Android app.

  I wanted to add a 4th column of a 3 by 3 matrix, which is stored in M1.

  I did this way:

  ADDCOL (M1, [0,0,100], 4);       Add the fourth column: [0,0,100]

  Another way to do it is:

  M1 (1.4): = 0;

  M1 (2.4): = 0;

  M1 (3,4): = 100;

  Both give the same result when I look in the catalog of the matrix.

  Also when I enter the House finds out or make some operations with it.

  Strange is that in the catalog of matrix the first matrix has a content of memory that is about twice the memory of the second matrix.

  Nothing to concern about one would say.

  But when I use the first matrix in the advanced version of TRIANGLE_P it gives lines output instead of triangles, and the second is behaving normally.

  I seems to me that there is something wrong with the ADDCOL command.

  I think that this has been corrected already past the 8151 must therefore in there when / if the android version is updated.

• Using a matrix with variables in it.

  Hi all, I'm new on my HP 50 g so it can be easier that I am make it look like.

  I'm writing an equation for my strength of class material. The equation is the following:

  K = ((E*A)/L) * [C ^ C * S 2 - C ^ 2 - C * S]
  [C * S S ^ 2 - C * S S ^ 2]

  [- C ^ 2 - C * S C ^ C * S 2]

  [-C * S S ^ C * S 2 S ^ 2]

  The matrix is a 4 x 4. I need to be able to assign values to E, A, L and the largest C & S. So basically, I just need a scalar multiplied by a matrix. I can't find a way to make it work.

  Anyone would be able to help out me?

  I use RPN and CAS mode only has verified digital mode. I am really new to the HP 50 g but I can pass anything as longa s we can make this work!
  
  Thank you!

  If you want to multiply many different measurers to the matrix,

  or replace it with many different values of S, C, E, A, L, the best way is the following

  store the original matrix (again, in this example, only using 2 lines of the matrix)

  [[' C ^ 2 ' * IT '-C ^ 2' '-(S*C)']]
  [[THE OF * c ^ 2' '-(S*C)' '-(S^2)']]

  "MAT".

  STO

  the matrix is now stored in a variable called MAST

  now store the meter

  ' E * A/L '.

  "SCAL".

  STO

  the meter is stored in a variable called SCAL

  now for the original equation

  "SCAL * MAST '"

  « K »

  STO

  now for the first group of variables

  5

  « E »

  STO

  6

  « A »

  STO

  7

  « L »

  STO

  8

  THE OF '

  STO

  9

  « C »

  STO

  all variables have now assigned values

  Press the VAR

  to make sure that the variables are showing on the keys F1 to F6

  Press the key to display for K

  EVAL

  SIMPLIFY (or ENLARGE ENLARGE)

  

  and if you want the solutions of matrix in decimal form, press SHIFT RIGHT-> NUM (key)

  

  to change the values of variables, for example, 'L', it is very simple... a value of 20 L

  ENTER 20

  LEFT SHIFT

  L key (note that, to the left, then the selection key for the variable to be stored in the format works only in mode RPL NOT algebraic mode)

  now to reassess the matrix * equation Measurer

  K key

  EVAL

  SIMPLIFY (or ENLARGE ENLARGE)

  

  If you want to change the scaler, the same process.

  "L * E * A + 13'.

  LEFT SHIFT

  softkey SCAL

  K key

  EVAL

  SIMPLIFY (or ENLARGE ENLARGE)

  to change the matrix...

  softkey MAST

  DOWN (this automatically the matrix in the matrix writer application)

  Edit the required cells, and then press enter

  with the matrix now published on stack level 1

  LEFT SHIFT

  softkey MAST

  K key

  EVAL

  SIMPLIFY (or ENLARGE ENLARGE)

  etc...

• Premium HP: HP Premium: PROGRAM FOR DOING MATRIX OF BATTERY of the CALCULATOR (don't DO NOT WORK!)

  Hello!

  I attend the University for electrical engineering, and so I plan to buy a good calculator for my needs:

  -programmable with enough memory

  -graphical representation

  -"Advanced" math

  I have not discovered only recently on the amazing HP calculators (e.g. HP 50 g), which are capable of the RPN notation and thus make the calculations very fast and effective. I really hate the new calculators that announce the entry "quick and easy" using graphic symbols and cursor to select the location of the entrance! It of a lot of your time and makes me crazy, especially when it comes to long and "complex" calculations

  As I am not able to get the new HP 50 g, I looked at his "successor": first HP. But unfortunately there many defects in the RPN notation and also in some functions. But I'm willing to compromise, especially if I can write programs to replace some missing critical functions of HP 50 G.

  BUT, when I started looking into writing my own duties I quickly discovered that the lack of management functions of the inputs/outputs and even some strange/inexplicable behaviors.

  I wrote a program:

  EXPORT array()
  
  BEGIN
  
  LOCAL a, b, i, j;
  
  a: = years (1);
  
  IF length (a) == 1
  
    THEN
  
  b: = MAKELIST (years (X), X, a + 1, 2,-1);
  
    ON THE OTHER
  
  i: = a (1);
  
  j: = a (2);
  
  b: = MAKEMAT (years (i + j + 2 - J-(I-1) * j), i, j);
  
  END;
  
  (b) return;

  This program takes the last argument ("a") of stack for the size of the list/matrix.

  If the argument 'a' is a number (list 1 item), it creates a list of the last 'a' arguments from the stack. -> WORK

  Otherwise, it creates a matrix with columns and the specified lines. -> DOES NOT

  Now when I tested the code without I or J arguments MAKEMAT service, she worked OK. He worked too, if I used a very simple expression: for example I have J-1 or i + j - J + 2 (column only scanning).

  (The upper part (1 expression in the stack is the return value after execution of Array ()))

  OK LIST:

  

  MATRIX not OK:

  

  MATRICES OK, so current of enforcement only of years (i + j - J + 2):

  

  MATRIX OK, so current execution really simple Ans(I+J-1) function:

  

  Why these anomalies! I was really looking forward to buy HP Prime, but after all these issues and no real control on the stack of the calculator for the impressive programs

  HP 50 g has built in functions for these conversions, but more recent first HP does not work.

  All the best,

  Ziga

  And summarize the features of the program:

  Make a list of last wrote the number (one being 1: command):

  

  Make a matrix using a schema = {i, j} (a being list in 1: command):

  

  The array() function:

  EXPORT array()
  
  BEGIN
  
  LOCAL a, b, i, j;
  
  a: = years (1);
  
  (A) IF size == 1
  
    THEN
  
      b: = MAKELIST (years (X), X, a + 1, 2,-1);
  
    ON THE OTHER
  
      i: = a (1);
  
      j: = a (2);
  
      b: = MAKEMAT (years (i * j - J + 2-(I-1) * j), i, j);
  
  END;
  
  (b) return;
  END;