Adding elements of an array to its previous value

Similar Questions

• Substrating value of its previous value

  Suppose that I have given in a column as
  
  Col
  ____
  200
  230
  250
  290
  300
  
  then the output should show
  
  release of Col.
  ___ ______
  200 null
  30 230
  20 250
  40 290
  10 300
  
  can anyone help?

  with t1 (select 200 as c1
  of the double
  Union of all the
  Select 230 as c1
  of the double
  Union of all the
  Select 250 as c1
  of the double
  Union of all the
  Select 290 as c1
  of the double
  Union of all the
  Select 300 as c1
  the double)

  Select c1
  , c1 - lag(c1,1) over (partition by order by c1 null) output
  from t1

• multiplying the elements of an array with their index

  How can I multiply the elements of an array with their index values.

  Thanks in advance.

  Hi aksoy,.

  Multiply the elements with their index:

  

• How can I multiply all values of an array of 4 elements, with all its opposite values, resulting in an array with all 16 products?

  I'm quite new to LabVIEW (v.8.0) and I'm trying to understand the best way to have a table of 4 elements multiplied by its inverse values, resulting in an array of 16 elements

  Values of table 1 = 1, 2, 3, 4

  Values of table 1 reverse = 0.5, 0.33, 0.25, 1

  Resulting table = (0.33 0.25, 0.5, 1, 2, 1, 0.66, 0.5, 0.75, 1, 1.5, 3, 1.32, 4, 2, 1)

  Any advice would be appreciated. Thank you!

  You can try something like the following (the last operation is "reshaping table")

  

• How to add corresponding elements of two arrays in a continuous acquisition?

  Hi all

  I am writing a program (in version 9.0 of labview) to acquire the signal of a fast set. I use the acquisition rate of 1.25 Ms with an external trigger. Now what I need, is to add the "n" data these acqisitions and then further process.  E.g. If I signal to 200µs acqiring can total number of data points with the acquisition of 1.25Ms rate will be 250. I'll get a table 1 d of 250 data points whenever I run my acquisition.

  Let's say Array 1of acquisition number 1, 0.1, 0.3, 0.5, 0.6,... up to a total of 250 data points

  Table 2 of the acquisition by number 2, 0.4, 0.5, 0.8, 0.4,... up to a total of 250 data points

  ----------------------------------------------------------------------------------

  Added table should be 0.5, 0.8, 1.0, 1.3... .route to a total of 250 data points

  -----------------------------------------------------------------------------------

  To do this, I need first to save the table of acqisition number 1, then run the No. 2 acquisition and add points of data corresponding to the saved table. This should continue at a nuber defined by the user to purchase say 10, 20 or 50... I don't know how to do it. Can someone help me with this problem?

  Thank you very much in advance

  Kind regards

  Champion

  I guess that time avarages and acquisition will not change during the measurement, so keep a cela outside loops. If you know your settings for made her make it constant.

  you create task (outside the loop) and a narrow at the end.

  Avoid the dashboard generation where possible. With no.. AV., and no. acq.points declared, the size of the arrays is fixed and you can (re) use a single Bay and replace the elements in the array.

  No need to collect all the data and avarage them after the rally. Just add

  I add a suggestion

• Change the properties of a cluster element inside an array of clusters

  Hi all

  I have a table of cluster that has the shape of a line with different elements of the screen.

  A list or a tree would not have made it, so I had to use a cluster and make a.

  The problem is I want to change not only the text but also the color of the text.

  Individually.

  I found this:

  http://www.NI.com/example/30904/en/

  But it changes the property in all groups in the table, not just the one I need.

  Some people have the same problem:

  http://forums.NI.com/T5/LabVIEW/reference-to-array-of-clusters-with-an-array-element/TD-p/1006427

  http://forums.NI.com/T5/LabVIEW/different-set-of-values-for-two-rings-in-an-array-of-clusters/m-p/10...

  http://forums.NI.com/T5/LabVIEW/array-of-clusters-get-references-to-all-the-clusters/TD-p/1079456

  http://forums.NI.com/T5/LabVIEW/how-can-I-reference-the-properties-of-a-control-in-a-cluster-in/m-p/...

  http://forums.NI.com/T5/LabVIEW/writing-only-to-certain-cluster-elements-in-an-array-by/m-p/2200728

  http://forums.NI.com/T5/LabVIEW/update-properties-of-one-control-in-an-array/m-p/3015501

  http://forums.NI.com/T5/LabVIEW/array-of-clusters-and-in-the-cluster-is-a-bar-meter-how-can-I/m-p/15...

  http://forums.NI.com/T5/LabVIEW/property-node-of-a-control-inside-of-cluster-inside-an-array/m-p/946...

  Obviously, even if in a table/list or a tree, you can change the property of an individual

  cells (font, color), you can't do it in a cluster network, by a kind of magic.

  the property of an element of the cluster (font, color) are all connected together, so made

  the use of a table without value.

  A possible hack is available using masking of control, a visible setting and the

  other invisble, exchanging their position, whatever. This is a hack you have to perform,

  Therefore, add another code to maintain.

  Is that still the case, or is it now a more formal way to manage the individual cluster

  Properties, not only its data? After all it is a common example of a real life which should

  managed by Labview. In my opinion.

  David Koch

  Altenbach says:

  One of the elements could be an indicator of 2D about the same size image. You can create text in any color using the features of the image.

  Here's what I had in mind. Seems to work very well (I would refine the border picture fonts, etc., but this should help you get started).

  

• Changing the properties of the individual elements in the array

  In the attached VI, I have a table 1 d of the slider ('Phase Coefficients') controls where each element of the array represents the coefficient in a polynomial of arbitrary order. The problem I have is that the range of slider, I put to the coefficient of the lowest order (element 0 of the array) becomes quickly impossible for one more order coefficients (> 5 elements). Small changes in the highest order coefficients dramtically change the global polynomial.  I want each element/slider to have its own line, but I know that's not strictly possible that each element of a table shares the same properties. I've implemented a work around (use boolean to activate) in which the range of all cursors is set according to which the item is viewed, but my implementation prevents the modification of the range during execution of the VI. Is it possible to adapt my method (or use another method all together) in order to allow different, editable for each slider element ranges?

  Thank you!

  Each element of an array must have the same properties.  They can only differ in value.

  You can have an array of clusters, and each group can have the slider control.  Here, you will be able to regroup a slider with different properties in the cluster build clusters in a table.

• Why all the elements of the array does not appear?

  Hello

  I'm learning about the handling of tables.  The example finder includes this one, 'build array_forum.vi', which shows the two modes, concatenate and adding, I understand, HOWEVER, I can't understand how they built this vi.  For example, I can find the Array function to build, but I do not understand how they created the "digital data table 1" "data table 2" digital... etc, and I can't find the functions on the pallets that cause display "build the CONCATENATE entries table". ".  Where are these blue functions?

  Where these functions are found in the palette, and how we build them like that?

  The other vi indicated here, 'for loop array_forum.vi' is my attempt to reproduce, but it doesn't show all the elements of the array; However, it only displays a SINGLE element, the last element of the array.  How can I view all the items in the table I am creating using the FOR LOOP?  I am doing something wrong with the LOOP FOR?

  Thank you

  Dave

  Right-click your scoreboard, uncheck the "Display as icon" and see what happens.  There are two ways of viewing terminals, most of us like the simple point of view, the default value is the display of the icon.

• How can I view all the elements of an array?

  Hello

  I'm learning about the handling of tables.  The example finder includes this one, 'build array_forum.vi', which shows the two modes, concatenate and adding, I understand, HOWEVER, I can't understand how they built this vi.  For example, I can find the Array function to build, but I do not understand how they created the "digital data table 1" "data table 2" digital... etc, and I can't find the functions on the pallets that cause display "build the CONCATENATE entries table". ".  Where are these blue functions?

  Where these functions are found in the palette, and how we build them like that?

  The other vi indicated here, 'for loop array_forum.vi' is my attempt to reproduce, but it doesn't show all the elements of the array; However, it only displays a SINGLE element, the last element of the array.  How can I view all the items in the table I am creating using the FOR LOOP?

  Thank you

  Dave

  I think I posted this in the wrong place.  I reposted it on the forum of Labview.

  Dave

• Reference element of the array by name

  Hi, I have a table containing the different sprites... I am wanting to make reference to the sprite I want by its name rather than by its index in the table, and I was wondering if theres an easy way to do this? I know I could do a loop through all elements in the array and to see that we have a name that is equal to the name I'm looking for, but is something in the sense of myArray [elementName] possible?

  Well, if you did a loop for, you could then do something like:

  myArray .name = i;

• How to replace (assign) a part of the elements of an array in TestStand?

  Hello

  I would like to replace or assign values to the elements of an array.

  For example, I have a local variable with 6 elements, Locals.A = {1, 2, 3, 4, 5, 6},

  and I would do it is {1, 2, 13, 14, 5, 6}.

  Accordingly, I add an expression and write "Locals.A [2.3] = {13: 14}", but it failed.

  Is it possible to replace a part of a painting?

  My real question is I want to pass parameters to a sequence to a local variable of the MainSequence, like the picture as an attachment.

  I hope that I can assign the parameter (table 5 elements) for the range of 5th to 9th item of the local Variable.

  Could someone give me any suggestions? Thank you very much!

  

  (1) I meant move the entire table and in the subsequence programmatically update only a subset of the items.

  For 1 or 2, you'd have to write a loop as interates on and updates the items that you are interested in. There is no simple syntax that will do what you want. You can use a loop but, rather than make a statement of entitlement for each item.

  -Doug

• mathematical calculation in script on each element of the array.

  Hi all

  I am trying to write the VB script in which I want to do different mathematical operation on each element of channel-specific data. For example, for each element I want to find the next two index given way and both before and after publication of the results on the basis, then it is more calculating.

  It will be very useful if someone can guide me in the execution of operation on the elements in the array inside the script of tiara, that we can do in labview using indexes in the table. There are built-in math and statistics in tiara tab analysis tool. But I want to design for my custom mathematical operation.

  Thnks

  HS

  Hi HS,

  Here is a version 10.2 tiara from what I understand ask you:

  Window = 2

  Denom = 2 * window + 1

  Threshold = 10

  Chnum = CNo("[1]/Speed")

  FOR i = 1 + ChnLength (Chnum) window - window

  Sum = 0

  FOR j = i - window to i + window

  Sum = sum + ChDX (j, Chnum)

  NEXT ' j

  Ave = sum/Denom

  IF Ave > threshold CAN

  ' do action of contingent

  END IF

  NEXT ' I

  Brad Turpin
  Tiara Product Support Engineer
  National Instruments

• 'Replace the element of the array' replaces not only indexed items

  Hey masters LabView,.

  Fairly new to Labview and I'm trying to sort out how to create a table of images. I know that the total number of images I want in my 'stamp' (not the buffer of LabView), so I'm the initialization of an array of this size. Can I bring this table in a loop For with a shift register, and I want to capture images and write them in the table of the buffe continuously (a comment: I do a circular buffer, but I don't want to implement in LabView, because there a lot of things that I don't need and I will eventually have to the process to be as thin as possible).

  Here's the problem (I assume an implementation, that does not decompose LabView):

  I expect:

  AN element of the array, in the position indicated by the index of the loop [i], is replaced by the image newly caught

  I get:

  All THE elements of the array becomes the image newly caught.

  (I can tell because I taste under the table, grabbing a single image from a constant "Check Array" index - may 7, for example.) But my index of the loop [i] value is 13, and the subsample becomes again the image newly caught.

  What a ridiculous thing I am doing wrong?

  Any help would be greatly appreciated.

  

  Ah, I just noticed something.  Initialize you an array of references at the beginning of your program, but it is a complete picture OF THE SAME REFERENCE: you must call the IMAQ Create in a loop so that you actually get unique references in your table.  You must have a different NAME for each image.

• Type a table defined clusters to hold configuration data - definition of default values for each element of the array

  Hello

  I was wondering if I could get some information and opinions on the use of an array of type defined clusters to store configuration data.  I am creating a program to test several EHR and wanted to have a control of type defined for each HAD with the information needed to create the DAQmx tasks for all signals for it must HAVE.  I am eager to do so that the data are encoded in hard and not in a file that the user might spoil.

  Controls of type def are then put into a Subvi who chooses as appropriate, one based on the enumeration of Type DUT connected to a case structure.

  I have problems with the control of the defined type.  I see issues when you try to save a configuration unique to each element of the array in the array of clusters.  Somehow, it worked at first, but now by clicking on "Operations on the data--> default font of the current value ' on individual elements of the cluster or the entire cluster (array element) does not save data when I re - open the command def.  What I am doing wrong?  I'm trying to do something with the berries of the clusters that I shouldn't do?

  I enclose one of the defined reference type controls.  I tried to change it bare to see if that helped, but no luck.

  To reproduce, change the resource string for the element 0 of the array and do the new value by default.  Then close the def of type, and then reopen it.  The old value is always present in this element.  The VI is saved in LabVIEW 2012.

  The values of a typedef are not proprigated to the instances of the control. They get if created WHEN data values have changed. They will be not updated with the changes to come. You must create a VI specifically to hardcode your values or to implement a file based initialization. The base file would be much better and more flexible. If you don't want users to change the data simply encryption. There is a wedding blowfish library that you can download.

• How to find feel it between the elements in an array

  Hi guys,.

  It is easy for you probs, but how can you find the diffence between all elements in an array?

  for example array = 1 2 3 4 5 6

  so difference between 1 and 2 is 1, the difference between 1 and 3 is 2. all the way to the hollow of the differece between 6 and x is x etc.

  I tried using shift registers, but just can't get enough.

  Thank you

  No need for the outer loop.