Create an array of array

Hello,
How can I create an array of array please?
Regards,
Peter
Peter.
Labview 2010
Solved!
Go to Solution.

Array of array hack
Ragged array feature request
- Cheers, Ed

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Is it possible to/how can I create an array of arrays in Labview 6i?

I am trying to create a data structure based on a tree where each limb is an array of arrays and each of those arrays is an array of arrays...etc. My ultimate purpose of this is for multidimensional (infinite) data saving/data recovery.

I suspect it won't work for your intended application, but here is an answer to your question:
You can't create an array of arrays, because that would be the same as increasing the number of dimensions of the array. However, you can store an array in a cluster, then have an array of clusters with arrays in them. So, indirectly it is possible. This gives you the possibility of each array being a different size.
Bruce
Bruce Ammons
Ammons Engineering

How to create and use mutable array of UInt8

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If I get it right, UInt8 *buffer, buffer - is a pointer to a start of array?
Then how to create and use mutable array of UInt8 pointers?
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How can I create a variable size array?

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Trouble creating and populating an array of objects.

I'm trying to create/populate an array of objects with consisting of a {string, double, integer}, and am having trouble getting this theory to work in Java. Any assistance provided would be greatly appreciated. Following are the two small progs:
public class HairSalon
{ private String svcDesc; private double price; private int minutes;
//Create a constructor to initialize data members
HairSalon( )
svcDesc = " "; price = 0.00; minutes = 0;
//Create a constructor to receive data
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     svcDesc = s; price = p; minutes = m;
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public String getSvcDesc( )
     return svcDesc;
public double getPrice( )
     return price;
public int getMinutes( )
     return minutes;
public class SortSalon
     public static void main(String[ ] args)
     SortSalon [] sal = new SortSalon[6];
//Construct 6 SortSalon objects
          for (int i = 0; i < sal.length; i++)
          sal[i] = new SortSalon();
//Add data to the 6 SortSalon objects
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     sal[1] = new SortSalon("Shampoo", 5.00, 5);           sal[2] = new SortSalon("Sytle", 20.00, 20);
     sal[3] = new SortSalon("Manicure", 15.00, 15);
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//Display data for the 6 SortSalon Objects
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     System.out.println("End of Report");

Hey JavaMan5,
That did do the trick! Thanks for the assistance. I was able to compile and run the program after adding my sorting routine. Do you happen to see anything I can do to clean it up further, or does it look ok? Thanks again,
Ironjay69
public class SortSalon
     public static void main(String[ ] args) throws Exception
     HairSalon [] sal = new HairSalon[6];
     char selection;
//Add data to the 6 HairSalon objects
     sal[0] = new HairSalon("Cut", 10.00, 10);
     sal[1] = new HairSalon("Shampoo", 5.00, 11);
     sal[2] = new HairSalon("Sytle", 20.00, 20);
     sal[3] = new HairSalon("Manicure", 15.00, 25);
     sal[4] = new HairSalon("Works", 30.00, 30);
     sal[5] = new HairSalon("Blow Dry", 3.00, 3);
System.out.println("How would you like to sort the list?");
     System.out.println("A by Price,");
     System.out.println("B by Time,");
     System.out.println("C by Description.");
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//Bubble Sort the Array by user selection
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          case 'A':
          BubbleSortPrice(sal, sal.length);
               break;
               case 'a':
          BubbleSortPrice(sal, sal.length);
               break;
               case 'B':
          BubbleSortTime(sal, sal.length);                    break;
               case 'b':
          BubbleSortTime(sal, sal.length);
               break;
               case 'C':
          BubbleSortService(sal, sal.length);
               break;
               case 'c':
          BubbleSortService(sal, sal.length);
               break;
               default:
          System.out.println("Invalid Selection, Randomly Sorted List!");
//Display data for the 6 HairSalon Objects
          for (int i = 0; i < sal.length ; i++ )
     System.out.println(sal.getSvcDesc( ) + " " + sal[i].getPrice( ) + " " + sal[i].getMinutes( ));
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// Sorts the items in an array into ascending order by price
int a, b;
HairSalon temp;
int highSubscript = len - 1;
for(a = 0; a < highSubscript; ++a)
     for(b= 0; b < highSubscript; ++b)
     if(array.getPrice() > array[b + 1].getPrice())
          temp = array[b];
          array[b] = array [b + 1];
          array[b + 1] = temp;
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// Sorts the items in an array into ascending order by time
     int a, b;
     HairSalon temp;
     int highSubscript = len - 1;
     for(a = 0; a < highSubscript; ++a)
          for(b= 0; b < highSubscript; ++b)
     if(array[b].getMinutes() > array[b + 1].getMinutes())
     temp = array[b];
     array[b] = array [b + 1];
     array[b + 1] = temp;
public static void BubbleSortService(HairSalon[] array, int len)
// Sorts the items in an array into ascending order by time
     int a, b;
     HairSalon temp;
     int highSubscript = len - 1;
     for(a = 0; a < highSubscript; ++a)
     for(b= 0; b < highSubscript; ++b)
     if(array[b].getSvcDesc().compareTo( array[b + 1].getSvcDesc()) > 0)
               temp = array[b];
               array[b] = array [b + 1];
               array[b + 1] = temp;

How to create a separate new arrays for each loop

I have a question about creating new arrays. For example : In my for loop, the initial value is 1 and the final value is 4 and each iteration increment by 1, meaning that in this case i have 4 iterations. At the same time, i want to create 4 separate arrays called array 1 for first iteration, array 2 for the second iteration and so on, that depends on the number of iteration. Could you give me some advice please?

Hi Darren,
Your suggestion is what I want. However, when i try an example, it doesn't come out with the result that i want. Maybe I did something wrong. Basically, I have a 2D array with some default value in it. So if the number of loops is 2, it suppose to have 2 separate array with the same set of elements. However, I only had one array with growing set of elements. To illustrate, it suppose to be
Array1    Array 2
| 1 2 |     | 1 2 |                                        |12|
| 3 4 |     | 3 4 |         rather than              |34|
| 5 6 |     | 5 6 |                                         | 56|
                                                               |12|
                                                               |34|
                                                               |56|
I have attached the file. Could you please show me where the mistake is ?
Attachments:
newarray.vi ‏26 KB

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Is it possible to create a 1 D array with the "build array VI"? when receiving random number

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Is it possible to create a 1 D array with the "build array VI" when receiving random number?
I am receiving random data and the build array VI always create a 2D array which might cause some problem if you want to compute certain type of operation after.
Any example will be welcomed.
Thank you,
Israel

Hello Lynn and Yamaeda
First I want to Thank you Lynn for your linguistic contribution indeed "Build Array" is a primitive and not VI, thank you for the education. In reality what I am doing is simple.
I have two arrays of complex elements Array1 and Array2.
Array1 conains the complex elements ""(a0+ib0) ; (a1+ib1) ;...(an+ibn) ;
Array2 conains the complex elements ""(c0+id0) ; (c1+id1) ;...(cn+idn)
What I want to do is the multiplication of the first array by the conjugate of the second array element.
Array1*(Conjugate Array 2)" for the first element the results is "(a0.C0-b0.d0) + i(b0c0-a0d0)" and the etc...
and then taking the square root ([(a0.C0-b0.d0) power of 2]) + [(b0c0-a0d0) power of 2])
I was wondering if there were some dedicate primitive that could solve the computation above which is the cross correlation in Frequency domain.
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Create a 2-dim array dynamically

Hello!
I have had this problem here before but try one moore time :-)
This is the thing: We have a text-file from which we read. This textfile can be different from time to time. From this textfile we can catch numbers of columns and numbers of rows that a 2-dim array should have. The problem is how one can create this 2-dim array dynamically? We have a while-loop that the program runs inside already. Must one use the while-loop to solve this problem? Or can one solve this with only a for-loop? Hope you understand how I mean :-) Best regards

OK, I thought you want to read an array of the same size as the actual data in the file. You cannot read a 4x10 array if the file only contains data for a 3x5 array .
Is the array size determined by the data in the file or by some other calculation?
I would still read the entire file, then you can cut out a 2D subset using "array subset". This should not be a problem unless you have millions of array elements.
LabVIEW Champion . Do more with less code and in less time .

How do you create a 2-d array%3F

How do you create and write a 2-d array?? I have two operations in the same WHILE loop. Each execution of the loop should generate a new pair of values.
However, the BUILD ARRAY function only outputs a 1-d array to the WRITE TO SPREADSHEET FILE.vi.
Perhaps, more broadly, how does one put data into a 2-d array as it is collected? I think I am building two arrays simultaneously below, but, what I really want is to build a single 2-d array. Is this how you would do it? It looks clumsy connecting sequential BUILD ARRAY's together. Is this creating a 2-d array that I can search later by index and return the paired data?
Lastly, why does my front panel indicator only show data in the first column?? How do I make it display the data as it is collected across the rows?
Thanks,
Dave
Solved!
Go to Solution.
Attachments:
forum dec 12_2012 build 2d array.vi ‏13 KB

dav2010 wrote:
Sorry, very simple minded here...how do pairs go as a 1-d array? I thought that (x,y) data must be a 2-d array...a column of "x's" and a column of "y's"? Wouldn't a 1-d array just be all x's? I admit I'm pretty new to understanding arrays.
" build your 1D array from both scalars" --> how do you do this?? I cannot find a "convert to scalar" on the pallette.
Also, here is the vi saved down to 2009, I think.
Dave
Here's a simpler way, just write out your X and Y as a 1D array each iteration. The Write will append your data as a column of X's and a column of Y's:
or generate all your values and then write once:
(fix the broken wire).
“A child of five could understand this. Send someone to fetch a child of five.”
― Groucho Marx

Can we create a 2 dimensionnal array (Object[][]) from List.toArray() ?

I have a List that contains arrays and want to obtain a 2D array from the data stored into the list.
//Creation of the list
List list = new ArrayList() ;
Object anArray = new Object[]{"One", "Two", "Three"} ;
list.add(anArray) ;
anArray = new Object[]{"Four", "Five", "Six"} ;
list.add(anArray) ;
anArray = new Object[]{"Seven", "Eight", "Nine"} ;
list.add(anArray) ;
//Creation of the array
Object[][] data = (Object[][]) list.toArray() ;
//We should obtain the same as :
data = new Object[][]{
    {"One", "Two", "Three"},
    {"Four", "Five", "Six"},
    {"Seven", "Eight", "Nine"}
} ;How can I, with a single instruction convert my List to an array of arrays (Object[][]) ?

Object[][] data = (Object[][]) list.toArray(new Object[0][0]);

Java.sql.SQLException: Internal Error: at oracle.sql.ARRAY.getArray(ARRAY.j

hi all,
I am getting the below exception
Basically i am registering an out parameters like this
cs.registerOutParameter(4, Types.ARRAY, "ISSUESECTION_LIST");
my database version: oracle 11.1.0.7.0.
I have created a synonym and given the execute privileges ,but also it comes up with the below exception
java.sql.SQLException: Internal Error
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
at oracle.jdbc.oracore.OracleTypeCOLLECTION.initCollElemTypeName(OracleTypeCOLLECTION.java:1026)
at oracle.jdbc.oracore.OracleTypeCOLLECTION.getAttributeType(OracleTypeCOLLECTION.java:1056)
at oracle.jdbc.oracore.OracleNamedType.getFullName(OracleNamedType.java:110)
at oracle.jdbc.oracore.OracleTypeADT.createStructDescriptor(OracleTypeADT.java:2262)
at oracle.jdbc.oracore.OracleTypeADT.unpickle81(OracleTypeADT.java:1656)
at oracle.jdbc.oracore.OracleTypeUPT.unpickle81UPT(OracleTypeUPT.java:466)
at oracle.jdbc.oracore.OracleTypeUPT.unpickle81rec(OracleTypeUPT.java:416)
at oracle.jdbc.oracore.OracleTypeCOLLECTION.unpickle81_imgBody_elems(OracleTypeCOLLECTION.java:979)
at oracle.jdbc.oracore.OracleTypeCOLLECTION.unpickle81_imgBody(OracleTypeCOLLECTION.java:923)
at oracle.jdbc.oracore.OracleTypeCOLLECTION.unpickle81(OracleTypeCOLLECTION.java:743)
at oracle.jdbc.oracore.OracleTypeCOLLECTION._unlinearize(OracleTypeCOLLECTION.java:242)
at oracle.jdbc.oracore.OracleTypeCOLLECTION.unlinearize(OracleTypeCOLLECTION.java:208)
at oracle.sql.ArrayDescriptor.toJavaArray(ArrayDescriptor.java:963)
at oracle.sql.ARRAY.getArray(ARRAY.java:370)
at com.db.gmr.eds.sm.jdbc.IssueSectionStoreJDBC.getResources(IssueSectionStoreJDBC.java:69)
at com.db.gmr.eds.handler.GetResources.handle(GetResources.java:126)
at com.db.gmr.eds.servlet.PageController.handle(PageController.java:138)
at com.db.gmr.eds.servlet.PageController.doGet(PageController.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.db.gmr.core.servlet.filters.TomcatParameterBugFix.doFilter(TomcatParameterBugFix.java:65)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.valves.FastCommonAccessLogValve.invoke(FastCommonAccessLogValve.java:500)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:619)
If i use cs.registerOutParameter(4, Types.ARRAY, "SCHEMA_OWNER_NAME.ISSUESECTION_LIST"); Then i wont be getting the error.
COULD ANYONE LET ME KNOW THE WORK AROUND OTHER THAN THE ABOVE SOLUTION LIKE ADDING THE OWNER SCHEMA NAME WITH THE USER DEFINED COLLECTION TYPE.

There couold be two reasons:
1) it depends how u have defined type. if ISSUESECTION_LIST is defined in type SCHEMA_OWNER, then you have to call this ways only 'SCHEMA_OWNER_NAME.ISSUESECTION_LIST'
2) You might have defined using schema_owner_name like scott.<TYPE_NAME>. if its so, then drop it and again define type without using schema owner.
For detail help post your type declaration.

An array of arrays ???

I have the following sample code.
class arraytest
int A[] []A[];
how do I use this array declaration and what exactly is it. I can't figure out how to initialize it, or even what is going on ??
thanks for any enlightenment.
kris.

All these declerations create a two dimensional array
int[][]a;
int[]a[];
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a = new int[2][3]; //creates a 2*3 array
a = new int[2][ ]; //creates a size 2 array of arays
a[0] = new int[1]; //sets the first entry to an array of size 1
a[1] = new int[2]; //sets the second entry to an array of size 2

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hi!
i'm passing an array of arrays from java applet using
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Message was edited by: quaintpl
Message was edited by: quaintpl
Message was edited by: quaintpl
Message was edited by: quaintpl
Message was edited by: quaintpl

Thanks for the answer but the problem is the type of object of method and how from pl/sql is posiblle to call.
The method waiting a ArrayofAlicIva, but if i define this object is not posible to set the object inside the array because the wsdl not have this functions.
I need to define array of objects but the object is inside is the diferent type of array.
If i Define the array of object correct to object inside, the method expect that the other array type.
Is a Deadlock ??
The solution in Java is Simple
AlicIva[] alicIva = new AlicIva[1];
alicIva[0]= new AlicIva();
alicIva[0].setId(Short.parseShort(1));
fedr[0].setIva(alicIva);
this is the method imported in java class to form
-- Method: setIva (LArrayOfAlicIva;)V
PROCEDURE setIva(
obj ORA_JAVA.JOBJECT,
a0 ORA_JAVA.JOBJECT) IS
BEGIN
args := JNI.CREATE_ARG_LIST(1);
JNI.ADD_OBJECT_ARG(args, a0, 'ArrayOfAlicIva');
JNI.CALL_VOID_METHOD(FALSE, obj, 'FECAEDetRequest', 'setIva', '(LArrayOfAlicIva;)V', args);
END;

A structure with mutiple data types or array of array

I want to read some soft of a table from a text file and want to store in a structure (not in database) for future use. I want the structure to have rows and columns when I need to reach. Colums should store multiple data types (int and/or string). I have examined Collections that only store one data type and only one dimension. I need a structure that holds multiple datatypes and at least 2 dimension. In short I need array of array? Any example or suggestion?

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                    DataS kontrol = new DataS();
                    String [] temp = null;
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                        } else if (j== 8 && StrUtil.ValidNumber(temp[8])>0 ) {
                            kontrol.set_C_datalength(temp[8]);
                        } else if (j== 9 && StrUtil.ValidNumber(temp[9])>0 ) {
                            kontrol.set_C_dl(temp[9]);
                        } else if (j== 10) {
                            kontrol.set_C_conditionop(temp[10]);
                        } else if (j== 11) {
                            kontrol.set_C_conditionval(temp[11]);
                    liste.add(kontrol);
                i++;
                buffer.close();
        catch (IOException e) {
            return Long.valueOf(-1);
        /*For reading test*/
        try{
            DataS stored_kontrol = new DataS();
            Iterator itr = liste.iterator();
            int i = 0 ;
            while(itr.hasNext()) {
                //Object obj = itr.getClass();
                // Here were I stuck... How can I read from collection which is filled with object
        } catch (Exception e) {
            return Long.valueOf(-1);
        return Long.valueOf(1);
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Create an array of array

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