How do I resize an array of strings in a CIN ?

I've been using a call to NumericArrayResize() to allocate enough memory for numeric arrays, but I now have an array of strings that I need to build in a DLL/CIN and pass back to Labview. Can someone point me to a snippet that will demonstrate how to populate an array of strings with data?
Kindest,
Warren

Check the follwing example. It may be what you want:
Using a CIN to Create an Array of Strings in LabVIEW
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&AD517F5DCCAF70228625683A000A570F&cat=2F4F574886553A62862567AC004F032D
Also, check the following example, as it provide an example on how to handle strings.
Code Interface Node (CIN) That Converts a LabVIEW String to a C String, Modifies it, and Returns it as a LabVIEW String
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&D978409908EA760D8625683A000B6B6E&cat=2F4F574886553A62862567AC004F032D
Regards;
EV
www.vartortech.com

Similar Messages

How can I resize an array of strings?

I'm having a problem of not being able to use the CIN functions and therefore can't use the convenient resizing methods. I have tried to use NumericArrayResize to resize an array of strings, but it's not working correctly. Here's what I've tried most recently. I have tried many variations, so if you want to modify what I have posted, or just provide new code, please feel free.
typedef struct {
int32 dimSize;
LStrHandle elt[1];
} LStrHandleArray;
typedef LStrHandleArray **LStrHandleArrayHandle;
void someMethod(LStrHandleArrayHandle arrayOut) {
// attempting to write the string "asdf" in the first element in the array. (1D array)
int newSize = 1;
MgErr e = NumericArrayResize(uL, 1L, (UHandle*)&arr
ayOut, newSize);
(*arrayOut)->dimSize = newSize;
LStrHandle hdl = *(*arrayOut)->elt;
long str_size = strlen("asdf");
MgErr err = NumericArrayResize(uB, 1L,(UHandle *)&hdl, str_size);
LStrLen(*hdl) = str_size;
MoveBlock("asdf", LStrBuf(*hdl), str_size);
The code above doesn't result in crashing labview at any time. The string "asdf" is not copied though. And, after being able to copy one string I would like to extend this to many elements in a 1D array of strings.
Thanks!
Naveen

LabVIEW stores string arrays as an array of handles to those strings. To resize an array of strings you need to declare a new string in LabVIEW's data space, resize the handle array, and add a handle to your new string. Here is an example program which does this.
-Aaron Marks
National Instruments
Attachments:
resize.zip ‏252 KB

How do I pass an array of strings? (Help Me... Please!!! .Read Me....)

Dear All.
Help Me...
English is not very good. Google translator is used.
How do I pass an array of strings?
Please refer to the VB program
===========================================
Private Sub m_btn_Click()
    Dim nReturn As Long
    Dim sPpid As String
    Dim sMdln As String
    Dim sSoftRev As String
    Dim nCount As Long
    Dim saCCodes(2) As String
    Dim naPCount(2) As Long
    Dim saPNames(10) As String
    sPpid = "PPID001"
    sMdln = "Mdln"
    sSoftRev = "Rev001"
    nCount = 2
    saCCodes(0) = "1"
    naPCount(0) = 5
    saPNames(0) = "Param001"
    saPNames(1) = "Param002"
    saPNames(2) = "Param003"
    saPNames(3) = "Param004"
    saPNames(4) = "Param005"
    saCCodes(1) = "2"
    naPCount(1) = 5
    saPNames(5) = "Param006"
    saPNames(6) = "Param007"
    saPNames(7) = "Param008"
    saPNames(8) = "Param009"
    saPNames(9) = "Param010"
    nReturn = m_XGem.GEMReqSend(sPpid, sMdln, sSoftRev, nCount, saCCodes(0), naPCount(0), saPNames(0))
    If (nReturn = 0) Then
        Call Me.AddMessage("[EQ ==> XGEM] GEMReqSend successfully")
    Else
        Call Me.AddMessage("[EQ ==> XGEM] Fail to GEMReqSend (" & nReturn & ")")
    End If
End Sub
=================================================
nCount, naPCount enough saCCodes, saPNames value must be sent.
How to handle an array of strings in LabView is impatient.
I want to VB program implemented in LabView.

Have you actually tried to right click on the according node parameter and select Create->Constant or Create-Control??
And I don't see any string array in the parameter list. That are all simple strings and the VB code in your first post clearly shows that the call to the function only indexes the first element of those arrays to be passed to the function, not the entire array.
If the function really reads arrays despite being declared as only taking strings then it is using some weirdo VB trickery and there will be no way to replicate that in LabVIEW.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How do I write an array of strings to a single Excel row?

I'd like to write test data, as an array of strings, to an Excel file. Attached is my attempt to modify one of the Labview 6.1 example files. This modified example will write the data to the correct row, which is determined by serial # of the UUT, but to a new sheet for each unit. I'd like to do the same thing, but to just one sheet. This sheet's data would then be saved after 50 rows of collected test data.
Thank you in advance,
Tim Denson
Attachments:
Write Table To XL.vi ‏58 KB

Sorry I didn't get back to faster on this. I've been out of town working and just really haven't had time.
Yes,
The Report Generation toolkit would make this very easy. If you have it, I'd suggest using it.
The image shown below shows the five VIs from the toolkit that I've used to write to Excel.
What this loop does is receive a string through a Queue, either open a
template or open todays file, convert the tab delimited string to an
array, write the array to the next line of the Excel file, Save (with
todays date stamp if opened from the tempate) and close it. It's a good
idea to always save and close teh file after each write if it's not
being continuously written to. In this case, a new line will be written
only once a minute or so. This lessens the chance of losing data if the
machine locks up for some reason. Opening and closing does take time
and can slow down a loop that needs to run at a certain rate. This loop
actually runs in a background process and several other processes send
data to it through the queue to be written. The queue can buffer
several data streams if needed so you won't lose data if it's busy and
you don't have to worry about two processes accessing the Excel sheet
at the same time.
Ed
Message Edited by Ed Dickens on 02-18-2006 11:12 AM
Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.
Attachments:
RGTK Array to Excel.gif ‏14 KB

How can i combine an array of string and an array of integers ?

i have an array of string data [to be used as header], and an array of multiple column integer vakues;i need them together in one file.
Am not able to combine them so that i can write them into a single file.
Solved!
Go to Solution.
Attachments:
string file input.txt ‏1 KB
Test build_1.vi ‏13 KB

There are a few ways you can do this. What I recommend is:
Open the file
Use the Array to Spreadsheet String to turn your headers into a single string
Write this to the file.
Use the Array to Spreadsheet String to turn your numeric data into a single string
Write this to the file.
Close the file
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

How to convert an int array to string array?

Hi,
Can anyone please help me with this question?
int number={4,6,45,3,2,77};
I like to convert this into a list and sort
List mylist = Arrays.asList(number);
Collections.sort(mylist);
But first I need to convert the int array to String array.
Please advise. Thanks.

If you want to convert your int array to a String array, you have no choice but doing a conversion element by element in a for loop.
However, if the sort method doesn't behave as desired, you can use the one with 2 parameters, the second parameter being a comparator class.
Check the javadoc for more information : http://java.sun.com/j2se/1.3/docs/api/java/util/Collections.html
/Stephane

How do I make an Array Of Strings

I want to make a program that will accept up to 10 lines of text but maybe less depending on the what the user want to put in... i can't seem to figure out where i put the number after a string... after String [10] text; or String text[10]?? am i even going about this correctly??
thanks,
Disco Hristo

No, you are not.
You need to do something like:
String [] text = new String[ 10 ];Remember, Java creates all objects on the Heap. So you tell an array the appropriate size to be when you actually allocate an array with new.

How can I resize an array directly (without using reshape array)?

Hi everyone,
I have a porgam in which I am using an array as a command (with specific values that the user enters before running the program). By mistake, at the beginning I created a 4 dimension array (for instance), but I didn't know because I was only showing the first 3 values (not expanding the array to 4 or more). I would now like to change the size of the array from 4 to 3. I don't seem to be able to find an option (right clicking on the array) that enables me to do this directly. I don't want to use the "reshape array" icon, because this is not what I want to do. I hope I am clear enough.
Thanks for any help,
regards,
Marc
Solved!
Go to Solution.
Attachments:
Forum array.vi ‏7 KB

HI,
If i have understood your question hope this helps you. If you want to change the size of the array right click on the array element and click Data Operations>Delete Element or if you want to do programmatically delete the particular element.
Attachments:
Forum%20array[1].vi ‏11 KB

How to get correct byte array from String

I have a string which contains binary value from 0 to 255. Now, if I use String.getBytes(),all the chars in the string which range from 128 to 160 will be convert to 63.
What's the problem?

You're assuming that you're working with Ascii values.
You're actually working with Unicode values.
When you use getChar() on a String, you get back a 16bit integer, the unicode index. When you do a getBytes() the Unicode values get mapped back to the default codepage of your machine.
Eg. on an english pc, the default locale is Windows latin, codepage 1252. On non-english pcs, it could be any encoding scheme.
If you're on a machine set up for a chinese locale, then the Unicode
values get mapped to your chinese codepage. The extended ascii values,
above 127 may not be defined in your codepage.
Try String.getBytes ( "Cp1252" );
Although I suspect that, whatever you're trying to do, it's probably not the right approach....
regards,
Owen

Array of Strings?

How can I make an array of strings?

or, depending on what the heck you're talkingabout
That's bad advice now that Java is in version 5.
The standard loop is the for-each loop. If you don't
use it you're going down in complexity which is a
very bad thing according to the "premature
optimization is evil" bunch. So use for-each if you
don't want to be accused of "premature optimization"
by jverd and yawmark and other prominent members of
that bunch.Thanks for your advice. I use version 1.4.2. I did not intend to give bad advice. My post was targeted at someone who obviously did not understand "nuts and bolts" of java. It was not intended to be a lesson about "good design" or "real life applications" or "standard for loops in version 1.5". I gave an example that i feel is both adequate and appropriate for the target audience. It's intended purpose was to demonstrate very simple and basic concepts to someone who asked a seemingly simple and basic question that could possibly irritate a seasoned programmer like yourself. I have read your helpful posts in this thread and would welcome comments from yawmark and jverd also. I am sure they would be helpful to others who would read this thread in the future but their level of experience (along with Mr Warnerja) would perhaps be lost and uncomprehended by the OP. If in the context of the original question, you believe that my posts and simple examples are inappropriate, then would you kindly explain in terms that the OP can understand? Also explain (in this context) how my posts were wrong and meaningless.
respectfully yours,
Arbie

Resizing an array of struct inside a DLL using the memory manager

Hi all,
I dug deep inside the boards, but wasn't able to find a solution for my problem.
I'm building a dll, which does some imageprocessing and should return an array of structs to labview, with one struct for every element in the image.
As I don't know the number of elements beforehand and the limit of the number is numbers of magnitude larger then the expected one, I don't want to allocate such a huge chunk of memory prior to the dll call in labview.
In a former version I used a 2d array for the elements, where each row holds the values of every element. Here I used the NumericArrayResize-function, which worked quite well. But I have to add more sub-processes and using structs (or clusters in labview) appears to be more usefull and cleaner for me, in addition I had to cast some of the elements back and foreward a few times.
So one element-struct should hold 2 singles and 1 uint32. My question is now, how can I resize this array of struct with memory manager functions as the NumericArrayResize-functions does not suit this purpose?
(Accessing a given array of structs inside the DLL and after that reading the changed values in Labview is surprisingly easy )
Thanks in advance
Solved!
Go to Solution.

Well, I was able to solve it myself. I found this thread, where the first post of rolfk made me thinking. It appeared to me, that the numericarrayresize-function behaves very similar to the realloc-function of c. So I used the type unsigned int 8 (which is just one byte) and multiplied it by the number of bytes used by one struct, in my case 12 bytes (4+4+4) and then multiplied it by the number of structs (elements in the image) i have. Luckily it worked and the memory block was resized exactly as I wanted it to be. Important to note: do not forget to adjust the size element of the handle, otherwise Labview does not know about the changed size.

Array of String Arrays

How do I make an array of String Arrays, not knowing how big the array will be
or how big any of the arrays it contains will be at the time I create it?

The size of an array is not dynamic, i.e. if you use an array, you must know its size at the time you create it.
Use one of the collection classes (like java.util.Vector or one of the implementation classes of java.util.List).
regards
Jesper

Add an array of strings into ArrayList

Hi Guys
I would like to add an array of strings into an ArrayList, which i have implemented by using the following code:-
String[] strReturnWords = getInput2(line);
List.add(strReturnWords);strReturnWords returns an array of Strings.
How do i retrieve the array of strings from the ArrayList. I have tried
String[i] strString = List.toString();Am i doing this correctly, are their any other ways??
Many thanks
Jason

That should work.NO. That wont work AT ALL.
This:
String[] arrayOfString = new String[listName.size()];Is not right. The number of elements in the list is MUCH different
then the size of the array which is an element in the list.
This:
arrayOfStrings[ i] = (String)listName.get(i);Will fail. The list contains an Object of StringArray not an Object of String.
import java.util.*;
public class StringList{
public static void main(String[] args){
     String text = "this is some text";
     String[] words = text.split("\\s+");
     ArrayList list = new ArrayList();
     list.add(words);
     String[] array = (String[])list.get(0);
     for(int i = 0; i < array.length; i++){
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How do I get ColdFusion to put information in the WSDL to show it returns an array of strings?

How do I specify that the return value of my web service is an array of strings?
Saying
<cffunction name="getInfoSources" access="remote" returntype="string[]">
produces the error:
coldfusion.xml.rpc.CFCInvocationException: [coldfusion.xml.rpc.SkeletonClassLoader$UnresolvedCFCDataTypeException : Cannot resolve CFC datatype: string.]
when I try to create the WSDL
I know that I can specify "array", which puts into the WSDL:
<wsdl:part name="getInfoSourcesReturn" type="impl:ArrayOf_xsd_anyType"/>
I want users of the service to know that the array is specifically made up of _strings_.
Thanks!
-- Mabel :-)
[email protected]

What if you click Never remember for this site and later change your mind? There should be a way to remember the username and password later if you'd like. I installed the Saved Password Editor 2.6.3 extension and added in the information manually i.e. by choosing New and it still isn't making a difference. What happened to the live chat support Firefox used to have?

How to store Array of Strings in MS-Access

Dear all,
i am facing a problame from the couple of days can any one plzzzzzzz guide what should i do to over come my problame....>
I want to store a String array in Microsoft Access database but i couldn't find the way how can i do so
public class ArrayJDBC {
/** Creates a new instance of ArrayJDBC */
public ArrayJDBC() {
public static void main(String[] args){
System.out.println("main started");
new ArrayJDBC().enterArray();
System.out.println("main after data entry");
public void enterArray(){
Connection con = null;
PreparedStatement pstm = null;
String dataSource = "checkArray";
String query = "INSERT INTO array(Object) VALUES(?)";
String[] strArray = {"one","two","three"};
con = new JDBCConnection().makeConnection(dataSource);
try{
pstm = con.prepareStatement(query);
System.out.println("pstmt created");
pstm.setObject(1,strArray);
System.out.println("array seted as object");
int r = pstm.executeUpdate();
System.out.println("data updated "+r);
pstm.close();
con.close();
}catch(SQLException se){
System.out.println("Data could not be update "+se);
this is my class the conncection is already established.
i use updateObject() method but it doesnt work..
plz guide me that how can i store
strArray in Microsoft Access and also tell me that what should be the data type in my database i.e ms-access

Well easiest way to do that is to create a single String where the values from array will be separated by some separator for example semicolon so you will get "one;two;three" this string you will store in database as a text, then when you read it back you need to parse it again to get an array of Strings. I am originally C# programmer there i would do serialization to XML and store it into database try looking here http://iharder.sourceforge.net/current/java/xmlizable/ they are creating XML Serializer.
Peter.

How do I resize an array of strings in a CIN ?

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