Initializing a array of elements

long[] ids
want to initialize ids to 0
how to do that??
Thanks.

getting compilation error that array might not have
been initialized.Then your code didn't necessarily create an array. You probably have something like this:
long[] ids; <-- not assigned (yet)
if (condition1) {
ids = new long[42]; <-- assigned here, but conditionally
ids[0] = 0; <-- oops - ids might not have even been initialized at all!

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Initializing string array registers

Hello. I have posted my project. It is not even close to finished but I am having trouble initializing the array's labeled "Up values" and "Down values", to "0" for all elements, at beginning of Vi run. So, when I am at the Front Panel and running the Vi, I would like all of the fields to begin with a "0", the moment the Vi is started. I have tried a couple different things I could think of and watched the Core 1 Video about arrays again however, it doesn't give the example for a string and nothing I have tried so far, is working. Thank you.

crossrulz wrote:
There are a few options to you:
1. Use an initialization state to write to your indicators their default values via a local variable
2. Put the default values into the indicators and then right-click on them and choose Data Operations->Make Current Value Default. This will store the default value in the indicators themselves.
I would recommend going with #1.
2. Put the default values into the indicators and then right-click on them and choose Data Operations->Make Current Value Default. This will store the default value in the indicators themselves. I put a "0" in each field, I slected "make current value default, but after the Vi ran, and then I started the Vi again, it keeps the numbers in the registers that are left over from the previous test. I also tried your suggestion #1. however, it still isn't writing a "0" in all the fields. The reason for this is that I don't want the operator's to read old data accidentally, when the Vi is running. I thought if I wipe all the registers out, it will prevent that from happening.

How to insert 2-D array of elements in excel sheet

I have a 2-D array of elements. I want to insert this array into an excel sheet and display the data in a graph. I used the example "excel insert table" but the problem with that VI is, it is inserting the elements cell by cell which is taking long time. I am wondering whether there is way to insert a complete column or row into excel sheet at a time.
Thank you,
Mudda.

Hi,
Try this vi which inserts the table in one operation. You can modify it to suit your purposes.
Hope this helps.
Edit: Should note that it works for both string and numeric array inputs.Message Edited by DavidT on 06-29-2005 10:09 AM
Attachments:
Excel Insert Table (LV7.1).vi ‏100 KB

Array of cluster to array of element - or - Cluster of arrays?

Hi all,
I have a large cluster (lets call it C_data) containing measured data e.g. 10 Temperatures, Pressure, (Temp_1, ...).....
All these data are measured once per second. I now collect all data
measured over a certain time in an array of the aforementioned cluster,
that is
an array of C_data. In order to display time series of data in graphs I
need to extract arrays of elements from this array of C_data.
In a text based programming language this could look like the following:
Struct C_data {Temp_1, Temp_2, P_1.....}
ar_C_data is an array of C_data
now I want to do something like:
array_of_Temp_1 = ar_C_data[*].Temp_1
In some programming languages this works but I cannot unbundle_by_name the array of Temp_1 from ar_data in Labview.
Since my cluster is large and may change in structure (for this reason I use a typedef) a generic solution would be the best.
I know that I could: loop over all elements of ar_C_data, unbundle by
name, index elements into arrays, and use these but this seems very
inefficient if it is done every second on a large cluster (30 elements) with several thousand array elements....
Olaf

You can minimize the overhead of scanning through all elements and extracting if you pre-define the array and use "replace array subset". This avoide having to re-size the array which is costly.
Or you can keep an array separately in memory. When one cluster element is added, the corresponding element is added to the array too. Causes some memory overhead, but you're going to have that anyway if you generate them "on the fly".
I don't see a way to do this other than either search through the array and pick the elements you need -or-
keep a copy of the data in a form you can use.
It's a common question of how to structure data to best suit two sometimes conflicting needs - efficiency and useability.
What might be of interest is to change the "Array" - "Cluster" order and have a single cluster C-Data with arrays of each element required. Might be a bit more difficult to use, it depends on your application.
This way you have all arrays ready at all times, but generating a single cluster requires bundling the individual units on the fly.
Shane.
Using LV 6.1 and 8.2.1 on W2k (SP4) and WXP (SP2)

Array to elements

Hello to all,
I am creating a program and, at this point, I need to extract an indefinite number of items from an array. If I knew the exact number of elements to extract there is no problem but how do I do not know this number?
thanks
I attach the image of my Block Diagram
Attachments:
Array to elements bd.png ‏6 KB

You certainly won't be able to use Arrray to Cluster without providing a cluster size to the primitive; this needs to be known at design-time. Answer pincpanter and someone can suggest an alternative.
<mta> You posted as I was writing mine. What do you mean by "bind (as appropriate) to a case structure"? It sounds like you want to have the array elements become individual cases in the Case structure. Is that correct? That's another design-time decision.
Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice

Initializing object array

Hi,
I am having problem initializing object array - here is my scenario -
I have created class a -
public class A {
Public String a1;
Public String a2;
Public String a3;
}the I have created class b
public class B {
Public A [] aa;
}and I want to initialiaze my class bi in anoither clas c
public class C{
A ar = new A;
ar.aa[0].a1 = "test"
}this gives me null ..please anybody help me
Neha
}

Thanks for the reply ..I know this is not good code ..but I have to write the classes in this way in SAP to create the Webservice ...the SAP side understand this type of structure only ..I still got the same error ..here are my original classes -
public class GRDataItem {
     public String AUFNR ;
     public String EXIDP ;
     public String EXIDC;
     public String MATNR ;
     public String WERKS ;
     public String CHARG ;
     public String VEMNG ;
     public String VEMEH ;
     public String CWMVEMEH ;
     public String CWMVEMNG ;
     public String STATUS;
public class GRDataTab {
     public GRDataItem [] grItem;
Public class webservice {
            int sn = 20 ;
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            tab.grItem = new GRDataItem[sn];
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}Thanks for all your help
Neha

I bought elements 13 and downloaded it , but when asked to sign into my adobe account as requested at initial set up of elements 13 , I know my correct password etc and i have a good internet connection But nothing happens even if i wait an hour or so. An

i bought elements 13 and downloaded it , but when asked to sign into my adobe account as requested at initial set up of elements 13 , I know my correct password etc and i have a good internet connection But nothing happens even if i wait an hour or so. Any help would be appreciated.

Hi Michael,
Thanks for posting on the Adobe forums.
Please follow these steps :
Go to following location:
for Win
C:\Program Files (x86)\Common Files\Adobe
C:\Users\username\AppData\Local\Adobe
for MAC
Finder> Go > Go to Folder
\Library\Applicaiton Support\Adobe
~\Library\Applicaiton Support\Adobe
Locate folder OOBE and rename it OOBE.old
Download and install�
Adobe - Adobe Application Manager : For Windows : Adobe Application Manager
Adobe - Adobe Application Manager : For Macintosh : Adobe Application Manager
After the installation
Try to Open Adobe Application Manager / Creative Cloud App.
Log in that with Adobe ID and Password.
If it does not work first try couple of times more.
Let me know if this resolves the issue.
Regards,
Sandeep

Function: create an array through initial/step/number of elements

Does LabVIEW have the function which directly creates an array by giving intial value, step and number of elements?
thanks,
WT
Solved!
Go to Solution.

You can use the Build Waveform function.
It is located in the Programming >> Waveform palette
Cory K

Initializing an array question

if i wanted to initialize elements of an array and get input from the user of how many there will be. where can i find some info on this?
basically instead of initializing 0,1,2,3, and so on i wanted to do it in a for loop, but i have tried it a couple of different ways with no luck.
maybe you guys can give me some insight on how i need to set this thing up or what i need to think about or where some of the reading is?
any info would help
thanks in advance guys

well here is the code for it i thought i was intializing it correctly??
public static void main(String[] args) {
        int y;
        int x;
        int maxValue = 0;
        int numRepitions;
        int [] counters = new int[maxValue];
        Scanner keyin = new Scanner(System.in);
        Random generator = new Random();
            System.out.println("please enter how many random numbers you would like to generate");
            maxValue = keyin.nextInt();
            System.out.println("please eneter how many values your would like to draw for");
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               counters[y] = numRepitions;
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Stalling a form from loading until the initial javascript arrays are loaded

I am looking for a way to get a form to be hidden based on the onload event. I would like to call a javascript function to initially populate some select boxes based on javascript arrays, but I would like this to happen before the page loads or at least stall displaying the select boxes until they are populated.
The way it is setup now, when the page loads, the select boxes try to load first and then the rest of the form loads. I would like to know if there is a way to load the select boxes from the javascript arrays, then have the select boxes and other form elements show up at the same time. I have tried putting a <div> around the entire form and within the javascript populate function I first use "document.formname.div_id.style.visibility=hidden" then at the end of the select box population within the function, I use "document.formname.div_id.style.visiblity=visible". I tried this and the select boxes appear blank; it is as if the populate function doesn't work at all.
I realize this is a very long question, but I will award you Duke Dollars if you help me out!!!

right now, I have it set up where I click on a link which is a jsp page which forwards me to the jsp page that has all the html in it. That page is where I initially try to populate the select boxes with the javscript arrays...I also have a number of javascript functions which change the contents of the select boxes based on another select box in the form. Will i have access to those "java" arrays, [instead of using the javascript arrays], that you are suggesting in the javascript code? I do need to use whatever arrays I create in javascript functions.

How to declare value binding to array list element in a pojo?

I have a POJO called P, that contains an ArrayList member called w.
class P {
private ArrayList w = new ArrayList(5);
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The POJO is in the SessionBean and I would like to reference individual
elements in the ArrayList via a value binding like so;
#{SessionBean1.instanceOfP.w[5]}
I'm not sure how to declare the getter/setter for member W in POJO P
so that setter and getter injection work.

You may not be able to directly set the indexed value.
Try some thing like this.
Add a property that returns the indexed value.
Ex. if you ArrayList objets are of type "String"
int index = 5;
public String getMyValue(){
return w.get[index]
Now your value binding would look something like
#{SessionBean1.myValue}
BTW, if you want to access different index, create another method
public void setIndex(int index){
this.index = index;
- Winston
http://blogs.sun.com/roller/page/winston?catname=Creator

Creating array of references to another array's elements

I have been coached by NI support to read an array of picture files into an array of picture indicators and then in order to save memory, establish an array of references to the array of picture indicators' elements so that I can use them in a subsequent loop. Does anyone know a quick way to create this array of references from an array of picture indicators?
Solved!
Go to Solution.

My understanding is there is only one reference to an array element. There is no such thing as references to different array elements.
Why wouldn't you use a reference to the array, use the value property node, then use index array to get out the picture you are interested in?

Initializing an array of clusters in a CIN?

I'm trying to write a CIN to connect to a mySQL database, retreive some information, and return it to labVIEW for display. The connection works perfectly using ODBC, but I'm having major trouble getting the information back to LabVIEW. I'm new to CINs and I'm still slightly confused as to how the different structures work. I want to return the data in an array of clusters (using struct names, a 'Set' of 'Records'). LV generated the structs, and I simply renamed some of the fields/names. The code I have so far works up to the point specified in the source below, when I try to initialize the array for data entry. I think what's throwing me off is the conplexity of my structures. Since it's an array of clusters, and not an array of say strings or integers, I'm getting confused. If anyone could help me out by telling me what's wrong with my code, and/or filling in the section of the while loop I'm rather clueless on.
typedef struct {
LStrHandle Number;
LStrHandle SerialNumber;
} Record;
typedef struct {
int32 dimSize;
Record ptr[1];
} Set;
typedef Set **SetHdl;
MgErr CINRun(COpt *ConnectionOptions, LStrHandle *Number, SetHdl *RecordSet);
MgErr CINRun(COpt *ConnectionOptions, LStrHandle *Number, SetHdl *RecordSet)
// LV error code
MgErr err = noErr;
// ODBC environment variables
HENV env = NULL;
HDBC dbc = NULL;
HSTMT stmt = NULL;
// Connection options data variables
UCHAR* dsn = malloc(SQL_MAX_DSN_LENGTH * sizeof(UCHAR));
UCHAR* user = malloc(32 * sizeof(UCHAR));
UCHAR* pass = malloc(32 * sizeof(UCHAR));
UCHAR* num = malloc(16 * sizeof(UCHAR));
// Query variables
INT qlen;
INT nlen;
UCHAR colNumber[5];
SDWORD colNumberSize;
UCHAR* query;
INT numRows;
// ODBC return code storage
RETCODE retcode;
/** Prepare data from LV for C++ manipulation **/
strcpy(dsn, LStrBuf((LStrPtr)(*(ConnectionOptions->DSN))));
dsn[(*(ConnectionOptions->DSN))->cnt] = '\0';
strcpy(user, LStrBuf((LStrPtr)(*(ConnectionOptions->Username))));
user[(*(ConnectionOptions->Username))->cnt] = '\0';
strcpy(pass, LStrBuf((LStrPtr)(*(ConnectionOptions->Password))));
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// Program crashes here too, but that's the least of my concerns right now. Keep reading down.
//num[(**Number)->cnt] = '\0';
qlen = (int)strlen(
"SELECT m.Number FROM master AS m WHERE (m.Number LIKE '');"
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query = malloc((qlen + nlen + 1) * sizeof(UCHAR));
sprintf(query,
"SELECT m.Number FROM master AS m WHERE (m.Number LIKE '%s'\0);",
num);
// Prepare and make connection to database
SQLAllocEnv (&env);
SQLAllocConnect(env, &dbc);
retcode = SQLConnect(dbc, dsn, SQL_NTS, user, SQL_NTS, pass, SQL_NTS);
// Test success of connection
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
retcode = SQLAllocStmt(dbc, stmt);
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retcode = SQLExecute(stmt);
SQLBindCol(stmt, 1, SQL_C_CHAR, colNumber, sizeof(colNumber), &colNumberSize);
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(**RecordSet)->dimSize = numRows;
retcode = SQLFetch(stmt);
numRows = 0;
while (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
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SQLDisconnect(dbc);
else
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SQLFreeConnect(dbc);
SQLFreeEnv(env);
// Return LV error code
return err;

This looks incorrect:
MgErr CINRun(COpt *ConnectionOptions, LStrHandle *Number, SetHdl *RecordSet)
Did you let LabVIEW generate the C file??
When you pass an array of clusters to a CIN, what is passed is a handle to the array. You are declaring a pointer to a handle. I just did a test passing an array of clusters to a CIN. The C file looks like this (comments are mine):
typedef struct {
int32 Num1;
int32 Num2;
} TD2; // the cluster
typeDef struct {
int32 dimSize;
TD2 Cluster[1];
} TD1; // the array
typeDef TD1 **TD1Hdl; // handle to the array
CIN MgErr CINRun(TD1Hdl Array);
Notice that it passes you a HANDLE, not a pointer to a handle.
On this line:
DSSetHandleSize((*RecordSet), sizeof(int32) + (numRows * sizeof(Record)));
If RecordSet is a HANDLE, then (*RecordSet) is a POINTER - you are passing a POINTER to a routine that expects a HANDLE.
The line:
(**RecordSet)->dimSize = numRows;
Is also incorrect - if RecordSet is a HANDLE, then (*RecordSet) is a POINTER, and (**RecordSet) is an ARRAY, but you're asking it to be a pointer. (*RecordSet)->dimSize would be the size to fetch.
Read the rules again on what is passed to CINs.
I strongly suggest developing the interface first - the VI that calls the CIN. Put the CIN in place and let LabVIEW generate the initial C file.
Then modify the code to do something simple with the input arguments, like fetch the array size, and put this number into an output argument. Something VERY basic, just to test the ins and outs. Debug this until all ins and outs are working.
THEN AND ONLY THEN add code to do whatever work needs doing.
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks

Complex types with single array type element, marshaling exception

For our JAXRPC web service, we have a complex type, as follows:
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<xs:restriction base = "xs:NMTOKEN">
<xs:enumeration value = "INVALID_1"/>
<xs:enumeration value = "INVALID_2"/>
<xs:enumeration value = "INVALID_3"/>
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</xs:simpleType>
We are running into Marshaling exceptions on the server side when the response/fault complex type has a single array type field.
weblogic.wsee.codec.CodecException: Failed to encode
com.bea.xml.XmlException: failed to find a suitable binding type for use in marshalling object "[Lnamespace.type.ErrorMessageWSType;@693767e9". using schema type: t=SomeFault@http://namespace/SOME/v1 java type:namespace.type.ErrorMessageWSType[]
If I change SomeFault, by adding another element, the error goes away.
<xs:complexType name = "SomeFault">
<xs:sequence>
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<xs:element name = "dummyString" type="xsd:string" minOccurs="0" />
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Am I doing something wrong during the wsdlc code generation or is this a known issue?
<wsdlc srcWsdl="${wsdl.dir}/${wsdl.file.name}"
destJwsDir="${gen.src.dir}/gen-src-jar"
destImplDir="${main.src.dir}"
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Any luck with this? I am running into the same error. Apparently, this is not an issue with Java binding, but when invoking remote EJBs, we run into this. I am running 10.1.3.1 and the error is:
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org.collaxa.thirdparty.apache.wsif.WSIFException: Class 'ca.bc.gov.pssg.c3.webservices.identitymanagement.Identity' is not compatible; nested exception is:
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Problem when getting array's elements in JSF

Using Struts/EJB/JSF.
Here is the code:
Action servlets code:
request.setAttribute("colSellers", (List<SellerDTO>) List );JSF part:
<c:out value="${colSellers[projectForm.client].id}"/>Error message:
*[ServletException in:/html/forms/project/read.jsp] The "[]" operator was supplied with an index value of type "java.lang.String" to be applied to a List or array, but that value cannot be converted to an integer.'*
But it works when i use real integer values....like
<c:out value="${colSellers['2'].id}"/>

Sorry, but this doesn't look like JSF, it looks like a combination of servlets, JSP EL and JSF. It will all work alot better if you choose your poison.
Put the array in a managed bean and use a JSF component like h:datagrid or t:datalist to display the elements. If that seems too restrictive, do what I did and switch to Spring MVC.

Initializing a array of elements

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