Swap elements in 2d array

I'm looking for a way to swap a user-defined length of elements in a 2-dimensional array between rows. All of my efforts so far only take the elements and move them within the same row.
Basically I have a 2d array with 2 rows, and I want to take a few of the elements from one and put them in the other, getting a new array that has elements of both. This needs to be expandable to any number of rows.
Thanks for your help.
Solved!
Go to Solution.

Here is what I came up with. It allows for single element swapping.
CLD Certified 2014
Attachments:
Swaping Elements.vi ‏14 KB
Swaping Elements2009.vi ‏11 KB

Similar Messages

Change properties of a cluster element withing an array of clusters

Hello all,
I have an array of cluster that is shaped as a line with different display elements.
A list or a tree wouldn't have made it, so I had to use a cluster and make a table.
The problem is that I want to change not only the text but also the text color.
Individually.
I found this :
http://www.ni.com/example/30904/en/
But it change the property in all the clusters in the array, 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, while in a list/table or tree you can change the property of an individual
cell (font, color) you cannot do it within an array of cluster, by some sort of magic,
the property of a cluster element (font, color) are all linked together, hence rendering
the use of an array worthless.
A possible hack is proprosed by using control masking, setting one visible and the
other invisble, swapping their position, whatever. It's a hack you have to perform,
hence add another code to maintain.
Is that still the case or is there now a more official way to handle individual cluster
properties, not just its data ? After all that's a common real-life example that should
be handled by Labview. In my opinion.
David Koch
Solved!
Go to Solution.

altenbach wrote:
One of the elements could be a 2D picture indicator of about the same size. You can write text in any color using picture functions.
Here's what I had in mind. Seems to work just fine (I would fine-tune the font, picture border, etc. but this should get you started).
LabVIEW Champion . Do more with less code and in less time .
Attachments:
ColorText.png ‏13 KB
ColorText.vi ‏9 KB

Is there a way of determining what element in an array is being clicked on?

Hi all. I would like to setup an event to determine what element in an array is being clicked on/hovered over. I think I tried this before and found it wasn't working due to limitations of LV 7.0. If this code already exists, it would be great if I don't have to do a scavenger hunt for the solution.
I think one possibility I nixed was to use the refnum of the elements to determine which one it is. IIRC, this is not possible because the refnum of the element is for the edit box only.
The second possiblity is to get the on click event, and somehow determine which element in the array it is. This doesn't sound too difficult as it should be a simple calculation, but may get in to some hairryness based on if the indicies are visible or not, and if I am using a new or old array with new or old control (calc would change based on boarder size of the controls). I might just simplify it by removing indicies and using older control set which has minimal boarder size.
And just for fun, can I force a tool tip to show up?
Thanks all,
A
Using LV7.0 on WinXP.

blawson wrote:
Been bitten by LabVIEW wrote:
I think one possibility I nixed was to use the refnum of the elements to determine which one it is. IIRC, this is not possible because the refnum of the element is for the edit box only.
Using LV7.0 on WinXP.
This is indeed possible, at least in the newer versions I use.
Take the array refnum from the click event data terminal and get a reference to the array element. This refers to the element that was clicked, but you do need to work out how to get the index. My method is to use property nodes to get the screen position and size of the element and the screen position and size of the array, as well as the array's Visible Index property. For each direction, take the quotient of the relative position of the element (account for padding!) over the size of an element.
I suspect that taking the mouse coords and comparing to the array's sizes in pixels is similar, although I trust my method for events that don't have mouseclicks (what coords does Array:shortcut menu selection(User) return if you used the keyboard?)
Here's an old version I happened to have open. I've posted about this before, I suspect I have a clearer version in my gallery. I use this method in my example code contest entry to work out which square of the chessboard is clicked.
Thank you for that one!
I am currently "locked up behind a down-rev fence" (working an old app in an old version) so I had not heard of that.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

How do you assign multiple values to a single element in an array?

I'm probably not wording the question right.
I have an array, let's call it M[], and for each element in the array (we'll say M[1]), I need assign three integers: row, col and value.
I need to set it up so I can do something like this:
A.row = M[i].col;
A[i].col = M[i].row;
A[i].value = M[i].value;
The algorithm isn't what I need help with, it's assigning .col, .row and .value to an index of an array.
Please help if you can.

You are right. You did not word your question perfectly, but I still think I get what you want.
First of all: A single element in an array always has exactly one value. No more, no less.
But that's not a problem. The element in an array is either of a primitive type (boolean, byte, char, short, int, long, float, double) or it's a reference (to a Object, String, MyClass, ...).
You can simply write a class that holds your three values and create an array of that type:
public class SomeData {
public int row;
public int col;
public int value;
// somewhere else:
SomeData[] a = new SomeData[10];
a[0] = new SomeData();
a[0].row = 10;
a[0].col = 5;
a[0].value = 42;Note how you only assign a single value to the element (a[0]) itself. All other assignment actually go to fields of the object refered to by that element in the array.
Also note that in Java types (such as classes, interfaces, ...) should start with a upper-case letter, while variables (local variables, members, parameters) and method names should start with a lower-case letter.
Edit: I'm getting old ...

How can I change the properties of only one element in an array of booleans?

I'm displaying an array of booleans to my operators, with each boolean in the array representing some system status check. Some of these checks are critical and some are not, therefore I want some of these booleans to have a different color when in the TRUE state (Red for the critical ones and Yellow for the non-critical ones). I can change the boolean colors with a property node, but that effects every element in the array. Is there any way to change a property of an individual element in an array? I know that I could take the incoming array and break it into two arrays - one for critical and one for non-critical, but this system is replacing an older system and the operators are accustomed to seeing their indicator lights a certain way and I'm trying to replicate what they had exactly.

Here's what I had in mind
Of course you can use as many colors as you want.
Message Edited by altenbach on 12-21-2005 04:53 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
LEDarray.png ‏7 KB
ColorArray3.vi ‏23 KB

In LabVIEW6i, is there a way to make particular elements of an array invisible while the others stay visible (without losing any element's info.)?

I have an array of clusters. Each cluster pertains to a certain oscilloscope I am controlling. There is another control which specifies which oscilloscopes I have "on".
If a particular oscilloscope is "on" I want its cluster to be VISIBLE in the array. If a particular oscilloscope is "off" I want its cluster to be INVISIBLE in the array.
How can I implement this in my program without losing ANY of the info. in my array?

I suggest to use two arrays; one for user interface holding the ON clusters,
and one for internal use holding all clusters. The diagram periodically
updates the internal array with user interface array data.
By INVISIBLE do you mean "skipped from the array" or displayed as an empty
placeholder? To hide an OFF cluster you could put in the cluster a flat
button boolean that is small and transparent when ON and large enough to
cover the whole cluster area (and other controls) when OFF.
Jean-Pierre Drolet
Scientech R&D
"mcmastal" a écrit dans le message news:
[email protected]..
> In LabVIEW6i, is there a way to make particular elements of an array
> invisible while the others stay visible (without losing any element's
> info.)?
>
> I have an array of clusters. Each cluster pertains to a certain
> oscilloscope I am controlling. There is another control which
> specifies which oscilloscopes I have "on".
> If a particular oscilloscope is "on" I want its cluster to be VISIBLE
> in the array. If a particular oscilloscope is "off" I want its
> cluster to be INVISIBLE in the array.
> How can I implement this in my program without losing ANY of the
> info. in my array?
LabVIEW, C'est LabVIEW

How to highlight a specific element of an array

I'm having some trouble selecting which element in an array has key focus. I want to be able to selectively highlight individual elements in an array of strings and set the key focus so that the user can immediately enter the text into that specific element.
I have been able to get "selection.start" and "selection.end" to work, but when I get a reference to "array element" it always returns a reference to the last element manually clicked. This way, I can only programatically highlight different elements by manually clicking on them, which somewhat defeats the purpose.
Does anyone know if this is possible, or if I need to move to tables or something else in order to give me this functionality?
I'm using LV 6.1
on W2k.
Thanks
Shane.
Using LV 6.1 and 8.2.1 on W2k (SP4) and WXP (SP2)

I had the problem that I would like to highlight more than one cell in a 2d array.
multicolumn listbox is very slow working with large data volumes so I had to use a 2d array instead, but then I lose the possibility to highlight.
The solution I used was to bundle a LAD and control an put this in the array, takes a bit more coding but works fine.
Attachments:
2d array with marker.vi ‏23 KB

How to pass a single element in an array to XSL from BPEL

In a bpel (2.0) process I have a for-each loop iterating through a list in the original input document. Within that loop I need to construct an input document for a call to a web service based on data in the current node of the list objects I am looping through.
Constructing the input document via BPEL assign activity copies within the for-each loop is an option but due to the complexity of that document I would prefer to use XSL. But I don't know how to pass the index information (ie. the for-each counter) into XSL and use it there (and I would prefer not to have to do so, since that will prevent use of the XSL GUI in jdev), so I would prefer to send the current node of the list as input to XSL instead.
Is it possible to pass a sub-section of an XML document (e.g. one node in the array) as input into XSL rather than the whole document? In other words, I would like to send the current array element from the original input document rather than the entire original input document because I will be using the data within that array element to create the web service input document.
Example:
<forEach parallel="no" counterName="i"
                     name="ForEachEntry">
              <startCounterValue>1</startCounterValue>
              <finalCounterValue>$numTimeEntries</finalCounterValue>
If I used the BPEL assign activity to populate the input document I would need lots of copies similar to this:
              <copy>
                  <from>$inputVariable.OteStgTimecardCollection/ns3:OteStgTimecard[1]/ns3:oteStgTimecardDetailCollection/ns3:OteStgTimecardDetail[$i]/ns3:origtransactionreference</from>
                  <to>$InvokeOteDetailAbsenceErrorStatusService_OteAbsenceDetailFailureService_InputVariable.OteAbsenceDetailFailureServiceInput_msg/ns19:OrigTransactionReference</to>
              </copy>
I would prefer to send the current list object as an input variable into an XSL transform:
     $inputVariable.OteStgTimecardCollection/ns3:OteStgTimecard[1]/ns3:oteStgTimecardDetailCollection/ns3:OteStgTimecardDetail[$i]
Is there syntax in bpel that would do that?
Thanks

You need use While Element and use Array like Element[number]
With While element you iterate <employee> node
and with Element[number] you can extract information from that node.
I wrote a BPEL that scan a XML file, the input is:
<cliente>
        <codigo>01</codigo>
        <nombre>Deiby Mauricio Gomez</nombre>
                <productos>
                        <producto>
                                <nombre>Camisa Polo</nombre>
                                <precio>50</precio>
                        </producto>
                        <producto>
                                <nombre>Pantalon Lona</nombre>
                                <precio>100</precio>
                        </producto>
                </productos>
        </cliente>
        <cliente>
        <codigo>02</codigo>
        <nombre>Julio Cesar Ayapan</nombre>
                <productos>
                        <producto>
                                <nombre>Camisa Polo</nombre>
                                <precio>50</precio>
                        </producto>
                </productos>
        </cliente>
In my BPEL I added up all article prices and after that I write to txt file the client and the Total.
Example:
Deiby Gomez, 150
Cesar Ayapan, 50
My while element is this (Please pay attention in bold words):
<while name="While1"
           condition="bpws:getVariableData('variable1')<=count(bpws:getVariableData('Receive1_input_files','body','/ns4:clientes/ns4:cliente'))">
      <sequence>
        <assign name="Assign1">
          <copy>
            <from expression="sum(bpws:getVariableData('Receive1_input_files','body','/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:productos/ns4:producto/ns4:precio'))"/>
            <to variable="Invoke1_process_InputVariable" part="payload"
                query="/ns5:process/ns5:cantidad"/>
          </copy>
          <copy>
            <from variable="Receive1_input_files" part="body"
                  query='/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:codigo'/>
            <to variable="Invoke1_process_InputVariable" part="payload"
                query="/ns5:process/ns5:id"/>
          </copy>
        </assign>
        <invoke name="Invoke1" inputVariable="Invoke1_process_InputVariable"
                outputVariable="Invoke1_process_OutputVariable"
                partnerLink="ValidacionBancos2WS" portType="ns5:BPELProcess1"
                operation="process" bpelx:invokeAsDetail="no"/>
        <switch name="Switch1">
          <case condition="bpws:getVariableData('Invoke1_process_OutputVariable','payload','/ns5:processResponse/ns5:resultado')='true'">
            <bpelx:annotation>
              <bpelx:pattern>Si el cliente es aprobado</bpelx:pattern>
              <bpelx:general>
                <bpelx:property name="userLabel">Si Aprobado</bpelx:property>
              </bpelx:general>
            </bpelx:annotation>
            <sequence>
              <assign name="Assign4">
                <copy>
                  <from variable="Receive1_input_files" part="body"
                        query='/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:codigo'/>
                  <to variable="Approved_Write_input" part="body"
                      query="/ns7:clientes/ns7:cliente/ns7:id"/>
                </copy>
                <copy>
                  <from variable="Receive1_input_files" part="body"
                        query="/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:nombre"/>
                  <to variable="Approved_Write_input" part="body"
                      query="/ns7:clientes/ns7:cliente/ns7:nombre"/>
                </copy>
                <copy>
                  <from expression="sum(bpws:getVariableData('Receive1_input_files','body','/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:productos/ns4:producto/ns4:precio'))"/>
                  <to variable="Approved_Write_input" part="body"
                      query="/ns7:clientes/ns7:cliente/ns7:total"/>
                </copy>
              </assign>
              <invoke name="Invoke2" inputVariable="Approved_Write_input"
                      partnerLink="fileAdapterWriteApproved"
                      portType="ns6:Write_ptt" operation="Write"
                      bpelx:invokeAsDetail="no"/>
            </sequence>
          </case>
          <otherwise>
            <sequence name="Sequence1">
              <assign name="Assign5">
                <copy>
                  <from variable="Receive1_input_files" part="body"
                        query='/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:codigo'/>
                  <to variable="Rechazados_Write_input" part="body"
                      query="/ns9:clientes/ns9:cliente/ns9:id"/>
                </copy>
                <copy>
                  <from variable="Receive1_input_files" part="body"
                        query="/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:nombre"/>
                  <to variable="Rechazados_Write_input" part="body"
                      query="/ns9:clientes/ns9:cliente/ns9:nombre"/>
                </copy>
                <copy>
                  <from expression="sum(bpws:getVariableData('Receive1_input_files','body','/ns4:clientes/ns4:cliente[number(bpws:getVariableData("variable1"))]/ns4:productos/ns4:producto/ns4:precio'))"/>
                  <to variable="Rechazados_Write_input" part="body"
                      query="/ns9:clientes/ns9:cliente/ns9:total"/>
                </copy>
              </assign>
              <invoke name="Invoke3"
                      inputVariable="Rechazados_Write_input"
                      partnerLink="fileAdapterWriteRechazados"
                      portType="ns8:Write_ptt" operation="Write"
                      bpelx:invokeAsDetail="no"/>
            </sequence>
          </otherwise>
        </switch>
        <assign name="Assign2">
          <copy>
            <from expression="''"/>
            <to variable="Invoke1_process_InputVariable" part="payload"
                query="/ns5:process/ns5:id"/>
          </copy>
          <copy>
            <from expression="bpws:getVariableData('variable1')+1"/>
            <to variable="variable1"/>
          </copy>
          <copy>
            <from expression="''"/>
            <to variable="Invoke1_process_InputVariable" part="payload"
                query="/ns5:process/ns5:cantidad"/>
          </copy>
        </assign>
      </sequence>
    </while>

How can I change all Inf elements in an array to a specific value?

I would like to change all Inf elements in my array to -1. Basically, I am looking for something similar to the range and coerce function, except that I want all values above a certain value to be a specific negative value, rather than go to that value.
I could use a case structure and go through each element in the array, but I am hoping to find something more efficient.Any ideas?
Solved!
Go to Solution.

P@Anand wrote:
I would do that in this way.
Here's a simpler version...
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Attachments:
Replace in Array.png ‏4 KB

I want to create an array that goes into a case structure where each element in the array is an individual case and gets done in order

I want to create an array that goes into a case structure where each element in the array is an individual case and gets done in order. Any ideas, I've been playing with the idea but have had no luck, is this even possible?

Hi,
Please check it out the attached Vi.. Is this you need?
Sasi.
Certified LabVIEW Associate Developer
If you can DREAM it, You can DO it - Walt Disney
Attachments:
Event.vi ‏11 KB

How to change the properties of individulal elements in an array?

Hi all,
I have an array (size is 25) of string and I want to disable and grayout half of them. But how do I do it? How do I change the properties of individual elements in an array? I have tried to use some of the examples given in the discussion forums, but it didint work for the task mentioned above. Anybody would be able to help me with a suitable example that can be specifically used for disable or enable the individual array elements?
Dev

Telemaque wrote:
The user will see the first half of the string elements filled-in and the lower half grayed-out (to be filled in later). Make a test VI, play around.
... except that all elements "greyed out" with this method contain the default string for the array element (blank by default, but changeable). There is no way to have meaningful, unique text in the greyed out elements.
I would suggest to use a listbox as control/indicator. Here elements can easily be disabled programmatically.
LabVIEW Champion . Do more with less code and in less time .

How do I determine what element in an array was right clicked on?

I have an array set up on my front panel. When the user right clicks on an element in that array, I would like them to be able select from 3 different options. I have the shortcut menu working, but I need to know which element in the array the user right clicked on to determine what values to change. How can I get the index of the element?
Thanks for any help!
Solved!
Go to Solution.

Couldn't you get index values from the array property node?
Also this doesn't account for if scrollbars are seen or not. And I usually like to know if my range is valid, because again I could be clicking on a scrollbar, or label and still get the Mouse Down event.
Here is one I posted a while ago.
http://forums.ni.com/t5/LabVIEW/Interesting-way-to-detect-array-index-from-mouse-position/m-p/286841...
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

How do I extract the length of an element in an Array List

Hello there,
I am facing this problem with an Array List of elements. I am trying to extract the individual length of a particular element in the array list . Now if I know the element is a String is this valid?
int lengthOfElement = 0;
lengthOfElement = ((String)parms.get(i)).length();
Your answer is much appreciated
Regards

Snap!I don't know how many times I've seen people post
saying that they have a list where each element is a
String, but they keep on getting ClassCastException :)Damn those Integers!
� {�

Append a constant string to every element in an array

Hi Friend,
I have a small stuck in my labview program that is I need to append a constant string to each element of an array. Could someone provide guidance on this? Prior thanks to your help.
Have a nice day!
Lee Joon

Pass the array into a for loop with autoindexing; concatenate each element with the constant and then use the array output from the loop...
I was a few seconds behind the post above; great minds think alike!
Message Edited by Phillip Brooks on 11-15-2007 08:42 AM
Now is the right time to use %^<%Y-%m-%dT%H:%M:%S%3uZ>T
If you don't hate time zones, you're not a real programmer.
"You are what you don't automate"
Inplaceness is synonymous with insidiousness
Attachments:
Append String.gif ‏33 KB

How many elements in an array?

Sounds like a simple question, right?
Apparently not.
LV 2010
I have a huge data structure, stored in DataLog files (thousands of them).
I want to convert this structure to Name/Value pairs ("Operator_Name", "Joe Smith"), for use in a TDMS file.
The structure is a cluster, with various clusters inside that, and inside those are DBLs, strings, BOOLs, other clusters, arrays, you name it.
My strategy is to obtain the CONTROLS[ ] property of the outermost cluster and call this VI.
The VI processes each control, decoding what type it is and handling it accordingly.
It works fine for STRINGs, NUMERICs, ENUMs, BOOLEANs, COMBOBOXes, TIMESTAMPS, and CLUSTERs.
For those simple ones, I use the LABEL.TEXT as the NAME and get the value (based on what type it is) as the VALUE.
For a CLUSTER, I get the CONTROLS[ ] array of the cluster and call myself recursively, to handle all the elements within the sub-cluster.
That all works fine.
But to handle an ARRAY, I'm stumped.
Attached is the code showing the case for an ARRAY.
What I'm doing is getting the CLASS NAME of the current control.
I LEGALIZE the label name (turn spaces into underscores, and maybe other special handling later).
For an ARRAY, I cast the generic CTL reference into an ARRAY reference, and get its VALUE.
I want to loop over each element of the array, and modify the name by the index number, and process each element.
There are arrays of STRINGS, arrays of DBLs, arrays of CLUSTERs - all types.
The question is - how many array elements are there?
The constant "10" in this diagram is a dummy - just there to see if it works.
it does work, except that I get 10 sets of answers, whether the real array has 2 or 20 elements.
I thought the array's VALUE would be an ARRAY of VARIANTs, but no - it's a single VARIANT.
I can't use VARIANT to DATA on the array's VALUE - I don't know what TYPE the array is.
I thought maybe the ARRELEM refnum would be NIL if I was past the end, but that's not the case - there's only one refnum for any array element, whether it exists or not.
If I check for errors, it complains that I cannot set the INDEXVALS property of a strict typedef array, even though it works just fine.
If there was a method to SELECT ALL on the array, I could use the SELECTION SIZE to figure out how many elements there are, but I see no such method.
The NUMBER OF ROWS / COLUMNS refers to the number of VISIBLE rows/columns, and has nothing to do with how much data is present.
So... How do I find out how many elements are in the array?
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks

The ArrElem reference property is not a reference to any particular element of the array.
On the contrary, it is a reference to the element addressed by the current ARRAY INDEX(es).
That's why my code above can read out the values for element 0, element 1, etc. I've verified that this works.
There is only one set of PROPERTIES for the array elements; if you use the ArrElem refnum to set a background color of blue, then ALL elements turn blue, but you can obtain the VALUE of a given element by setting the ARRAY INDEX(es) and accessing via the ArrElem.
I was thinking that maybe LabVIEW did a trick by setting this to NIL to indicate "no such element", but that's not the case.
In any case, the question remains: How do I determine how many elements there are?
The VALUE of the array is a variant: just what is in that package?
As I said, I don't see how to use VARIANT TO DATA; I don't know what kind of data it is.
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks

Swap elements in 2d array

Similar Messages

Maybe you are looking for