Table 2D to real matrix

Similar Questions

• remove items from the table and resize the matrix

  Hello, I'm new to Labview so I'm struggling with ideas. I have the following matrix

  A = [1 2 3 4

  5 6 7 8

  9 10 11 12

  13 14 15 16]

  I want to get only follows resized in a matrix with items 6, 7, 10 and 11, that is

  B = [6 7

  10 11]

  I appreciate your help

  On the table-online matrix palette, there is a function to get a submatrix.

• How do to accumulate data acquired in the table for a real-time XY graph plotting

  I have current and voltage values which I would like to draw the graph XY.

  Problem is that these are 1 d signals.

  1. Please tell me how I can earn these value in table, so I can have my XY trace.

  2. is there another way to plot in time real graphic XY of the acquired values.

  (I use NI 9205 analog module. I can see real-time signals i.e. time vs current and voltage time vs on my front.

  I need voltage vs current values in real time).

  You can help.

  Thank you.

  Try something like this...

  Notes:

  • If you simulate "as soon as possible", you put a period inside the loop.
  • As the table grows forever, you will be eventually run out of memory.
  • Since the x and y of the simulation is at the same frequency, all points will be on the same line.

• The date in the table external or real

  Hi all
  
  We have to load the file .csv to external table, few of the columns are date data type
  If I load in an external table as tank and convert to date during the actual table loading
  In general, which is faster (making the conversion of the date when loading the external tables or at a real table).
  
  Oracle version: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
  
  Thank you
  Rambeau

  Here it is - very basic, no indexes or constraints, a single column. The input file has 99000 rows with 3 distinct values.

  create table xtest1 (dt date);
  
  create table xtest2 (dt date)
  organization external (
     type oracle_loader
     default directory gic
     access parameters (
        records delimited by newline
        fields
        (
    DT   CHAR(10) DATE_FORMAT DATE MASK "YYYY-MM-DD"
        )
     )
     location ('xtest.data')
  )
  ;
  
  create table xtest3 (dt varchar2(10))
  organization external (
     type oracle_loader
     default directory gic
     access parameters (
        records delimited by newline
        fields
        (
    DT   CHAR(10)
        )
     )
     location ('xtest.data')
  )
  ;
  
  create table xtest4 (dt date)
  organization external (
     type oracle_loader
     default directory test
     access parameters (
        records delimited by newline
        date_cache 0
        fields
        (
    DT   CHAR(10) DATE_FORMAT DATE MASK "YYYY-MM-DD"
        )
     )
     location ('xtest.data')
  )
  ;
  
  declare
    v_timer number;
  begin
    v_timer := DBMS_UTILITY.GET_TIME();
    INSERT INTO xtest1 SELECT dt from xtest2;
    DBMS_OUTPUT.PUT_LINE('External with date cache: Time Taken: '||to_char((DBMS_UTILITY.GET_TIME()-v_timer)/100,'999G999D99'));
    EXECUTE IMMEDIATE 'TRUNCATE TABLE xtest1';
    v_timer := DBMS_UTILITY.GET_TIME();
    INSERT INTO xtest1 SELECT to_date(dt,'YYYY-MM-DD') from xtest3;
    DBMS_OUTPUT.PUT_LINE('In SQL: Time Taken: '||to_char((DBMS_UTILITY.GET_TIME()-v_timer)/100,'999G999D99'));
    EXECUTE IMMEDIATE 'TRUNCATE TABLE xtest1';
    v_timer := DBMS_UTILITY.GET_TIME();
    INSERT INTO xtest1 SELECT dt from xtest4;
    DBMS_OUTPUT.PUT_LINE('External no date cache: Time Taken: '||to_char((DBMS_UTILITY.GET_TIME()-v_timer)/100,'999G999D99'));
    EXECUTE IMMEDIATE 'TRUNCATE TABLE xtest1';
  end;
  / 
  
  External with date cache: Time Taken:         .34
  In SQL: Time Taken:         .47
  External no date cache: Time Taken:         .41
  
  External with date cache: Time Taken:         .34
  In SQL: Time Taken:         .47
  External no date cache: Time Taken:         .41
  
  External with date cache: Time Taken:         .35
  In SQL: Time Taken:         .47
  External no date cache: Time Taken:         .42
  

  Kind regards
  Bob

• Load data from an intermediate table into a real table by using the value of the indicator

  I need a code quick and dirty pl/sql to read the intermediate table ' STG_TABLE, line by line and load data into a PROD_TABLE.» The load should fail altogether, is a restoration should occur when he there an error occurs during registration to insert into a table of production using a flag value of Y as outcome and N as a failure.
  Any suggestions?

  Hello

  It seems that if you want something like:

  BEGIN
      :ok_flag := 'N';
      INSERT INTO  prod_table (col1, col2, ...)
       SELECT               col1, col2, ...
       FROM     stg_table;
      :ok_flag := 'Y';
  END;
  

  RESTORATION is done automatically in case of error.

  Instead of a link to ok_flag variable, you can use another type of variable that is defined outside the scope of this PL/SQL code.

  Published by: Frank Kulash, June 5, 2012 22:47

• Gather_table_stats with Cascade option because table real lock?

  Hi all

  I have read many documents as well as topics on Oracle Community, but I can't make sure that DBMS_STATS. GATHER_ % _STATS using Cascade Locks table or not REAL (I mean prevent DML execution). Cascade = TRUE DBMS_STATS to collect index statistics too.

  I did a few tests but sometimes the table was locked, exclusive and I couldn't update the lines, sometimes the table was not locked and I could update. I was really crazy.

  Please help me understand.

  Thank you very much.

  I've never read that GATHER_ % _STATS locks the table or index.  I never heard of him or makes the experience.

  Hemant K Collette

• Matrix of MathScript

  Hello

  I have a simple question. See the file jpg or vi. The size (y) is m = 1 and n = 101 but 'y' output is a scalar value (no matrix and not in table). How to display the 'y' on the chart outside the MathScript service and why the output of 'y' is not a matrix?

  Best regards

  Maciej

  You must configure the output of the tunnels for the type you want.

  Right-click on the exit tunnels and select "choose the type of data... matrix... real matrix" or "select the data type of...". Table 2D... DBL 2D", as the case may be.

• How to divide each unique number in a matrix by the number with an index in another matrix?

  Hello

  Basically, the calculation, I tried to do is called "dividing element by element". It is a transaction between two matrices with few passes and lines. The result matrix also has the same demension and each element is obtained by dividing the element with the same index in a matrix of the element with the index even in a different matrix. for examlpe,.

  A = [2 4 6

  3 9 6]

  B = [2 2 3

  3 3 2]

  the result will be

  C = [1, 2-2

  1 3 3]

  Is there an easy way to do another going out each element using the table to index?

  Thank you very much

  Hao Liu

  Use the 2D tables instead of the matrix data type, then just use a simple primitive division. the operation will be done by item automatically.

  

  (Generally you should always use table 2D instead of the special matrix data type. The matrix data type is most useful for linear algebra)

  (Die, he must be very careful, for example, if you multiply two 2D tables, you get a multiplication of element by element, but if you do the same operation on two matrices, LabVIEW will substitute for a real matrix multiplication, which is not the same. For the division, it seems that the matrices are divided piece-by-piece, so it might work for you directly. You should just be aware that the matrices are often treated differently. "They are a very special type of data).

• Matrix problem

  A matrix that I calculate keeps display in an imaginary form i.e. 90 + 0i, 75 + 0i, even if I selected all mathematical operations which is the matrix to be "real matrix. Any ideas?

  The matrix control is complex.  In the front panel, right click on the matrix, select remplacer replace-> table, matrix &...-> RealMatrix.ctl

• manipulation of the table problem

  I'm using Labview 2009 and I have a problem with windows... I have to implement the following code in Labview (X and digital input boards):

  for (i = 0 to MAX (X)) {}

  If (X [i] > (X [i-1] + 1)) {}

  X.Add (X [i], X [i-1] + 1) / / add the value X [i-1] + 1 x [i] position of the X table

  Y [i] = 0

  }

  on the other

  Y [i] = Y [i]

  }

  If I try to add items in the original array Y with the function 'Replace subset of table', the output array is not changed by the VI. If I try to initialize and to build a new table, I get a matrix of zeros. Can someone help me?

  If you want to just add 0 to the index that does not exist in X [] then try this.

• 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):

  

• Going crazy on the values of stale table f *.

  Some seriouse need help now.

  My goal is to build a table whenever a real touch.

  1. create a table based on the values programitlitly beeing past in the table

  2. This should each time when a Boolean value is true.

  3. the table building function should wait 6 s before storing in the table when the value is true

  My problem is that when I press True, and I start changing the starting value (say 0) desired value I want that it either (say 5) before six seconds pass, the value passed to the table after 6 seconds is the starting value of 0 not the value of dessired 5. This value appears the next time that I push the real button.

  It drives me crazy

  And the desired value must come within a structure of sequence because of the structure of the main VI (this is just an excerpt of this cose)

  HELP Please!

  Probably, this should solve your problem.

• How to use table 1 d of waveform in the Matlab Script

  I use Lavbiew to make the classification of Vibration signal.

  The first problem I encountered is the form of incorrect data.

  The output signals are 1 d arrary of waveform. I don't know how to use the Matlab Script.

  is someone can help me with this?

  I really appreciate your help.

  Hey beauzhang,

  I hope that you are well today. It certainly seems that we lack in some problems with the different sources and data types of wells. LVM VI Express load you have emerged from a table of waveforms. So we would need to do a few things. First of all, we need to ignore the range of interests, and we must get the waveform data elements table.

  I have provided an example of how we can extract the waveform in position 0 of the table and then pass the array of data values to the script node Y. I have configured the entry of the data of a table 1 d Reals node (by adding an entry and then the right of entry and select choose data type.)

  If you are interested in getting the values Y and build the table like you did in the script, you need to implement a different subset of table and looping mechanism in LabVIEW code to move each item to the script individually. However, I would recommend working with the entry level instead.

  

  I hope this helps!

• Behavior strange table when getting values

  I have a table that contains the TypeDef'd controls and I need to get a reference to the control of each element individually. To do this, I use the values property of the array Index that I put to the index of the item that I want to get. From there on, I can get a reference to the control. This occurs when the value of the table is changed through a simple value change event.

  When you change the value of an element, and then by using the property of Index values for the reference control at this level, the control returned reference is not one that should be. What seems to happen when I change an element in an array, this item automatically becomes the index '0' in the table itself. It's a very strange behaviour and I tried to go around for a little while. I've attached pictures of the screw that I use to show you everything.

  In the first image, I stressed the important portions in green. Going from left to right, the first Green Watch box that I'll put the index at which the table should be starting at 0. The reason I do this is because it is possible that the index display may be replaced by another value and lag between what we expect, it is (0). In the loop for, I set the property to Index values for what is the value of i. This, in theory, loop through all the items in the table, and then I get the value and the reference of this element. In the probe window, you can see the different values of the sons and I will refer to this in a second.

  In the second picture you can see the value of the table on the real front. The values of the sensors in the first picture taken after that I changed the value of one of the properties of the "Alarm 7" line. The value of the façade, it is clear that the 'Alarm 7' index value is 2, but when you look at the probe in the first image there shows that it is at index 0. Anyone know why this is happening and how to get the references to their actual index?

  1.

  

  2.

  

  
  

• Matrix subtraction

  Hello

  I'm doing a subtraction with two matrices. Why doesn't this work?

  Chuan

  It looks like a bug. Works very well with a 2D instead of a matrix table.

  (As a solution, add a 'matrix in table' front and a ' matrix' table at the end.)