Initializing arrays

Hello!
I'm doing a program which works with arrays. I use initialize block arrays to create them. But it depends on other variables the dimension of these arrays. If I want to change the length of a dimension I wire a variable to the block, but I have no idea what can I wire to the block to modify the number of dimensions....it cannot be modify when the program is running?? How I have to do modify the number of dimensions depends on a variable?
Thank you in advance!
Larson

The initialize array function is a growable function, that is it changes the function inputs by dragging the dimensions not programatically. There is a work around, you can use a case structure to call different versions of the function. This will work but will only for a finite number of cases. The other way is to initialize a multidimensional array as a single dimension and then pass it to the resize array function, i.e initialize ARRAY[i*j*k] and resize to ARRAY[i][j][k]. This is a little unusual to deal with arrays which change at runtime. The final approach it to write polymorphic functions to handle the different cases, again you will not have full dynamic run-time handling of all possible cases but can handle a few cases easily.
Paul
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

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Combined declaration and initialization of array

Hello All,
What is the difference between the below mentioned arrat initializations?
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Regards
Sojan

The first creates an anonymous array and copies its reference in the variable myArray. The second implicitly creates and initializes an array (there isn't really a perceptible difference). However, the second can only be used in declarations. Consider the following:
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Initialize an array of union types

Hi,
I'm trying to the use the C99 designated initializer feature to initialize an array of union types, but I'm getting a compiler error as shown below. Am I using the correct syntax?
#include <stdio.h>
union U
     struct {int data;} a;
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main()
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"u.c", line 13: structure/union designator used on non-struct/union type
cc: acomp failed for u.c
% cc -Version
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%

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Initialize indexes array

Hello!
I am new to LabView and I am struggling with this problem for a couple of days...
I have a 2D array CH x spike_time and on each row (1D array) I need to implement a logic that requires the possibility to dynamically initialize two indexes.
To be more clear, if I indicate with CH each row of the 2D array, this is the logic I should implement on each row:
i=0;
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{ j=i+1;
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What is the best way to implement this logic in labview?
How can I manipulate the value of the indxes i and j to initialize them as in the code? I tried to use the "Subset of Array" function in order to "cut" subset of the row starting from i and j and shift registers to pass the subset again as input of the loop, but I couldn't get to anywhere close to a solution.
If anyone could share some ideas with me or has a useful similar vi, I would be very thankful!
Thank you so much!
Solved!
Go to Solution.

MG70 wrote:
Thank you Hoovahh and GerdW for helping me!!
No problem. In the spirit of teaching I'd like to teach you another trick on the forums. The large majority of us work on these forums for free, and the recognition we get partialy comes from the number of posts we are able to answer, and the number of kudos we get for helping others. So feel free to give kudos to those that help you, and mark topics solved by a post that solves your question.
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.

Initialize object array without specifying dimention

Hi,
Can anybody help me in suggesting a solution for this:
I have a class called Test. I can create instance array and initialize for class Test using
Test test[] = {new Test(), new Test()};
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statement.
How can I give infinite initialization for Test
Thank you
Regards
Anoop

Anoop.Retna wrote:
Hi,
Can anybody help me in suggesting a solution for this:
I have a class called Test. I can create instance array and initialize for class Test using
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or
Test test[] = new Test[100];
statement.
How can I give infinite initialization for TestYou can't. There's no such thing.
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In my program I want to initialize some 20 odd variables(all of the same type) to the same value having their names as Input1, Input 2 .. Input 20. Want I want to do is to use an array to do this rather than writing the 20 variables one after the other. Is there any way to do so ?
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Thanx in advance,
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Hi Again,
I am sorry for framing the question wrongly. What i want exactly is this :
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Any way to Initialize Java Array to start with 1

Hi Friends,
Is there anyway to initialize the java array with starting with 1 instead of normal 0.
Thanks and Regards.
JG

JamesGeorge wrote:
Hi Jacob,
Thanks for you time..
Coding like 1 - n will make everything uneasy, I find in other languages like vbscript,lotusscript it can be done..so just a thought to check in Java too..
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Thanks
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- LOAD A, ArrayAddress
- LOAD B, Index
- MUL B, ElementSize
- ADD A, B
- LOAD (A)
One-based:
- LOAD A, ArrayAddress
- LOAD B, Index
- ADD B, -1
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- ADD A, B
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Initialization of Array

Hi
Is possible to initialize a collection of record (or varray) with values without to need to use a loop ?
Example I must to initialize a multidimensional array
   TYPE rec_names IS RECORD (
      cod_cli1    varchar(6),
      zipcode1   char(8),
      city1      VARCHAR2(30),
      state1      char(2),
      cod_cli2    varchar(6),
      zipcode2   char(8),
      city2      VARCHAR2(30),
      state2      char(2)
   Is possible build a array with initialization without to do a loop ?
tia

Hi,
Maybe in the type declaration you can put a default value:
Connected to Oracle Database 10g Express Edition Release 10.2.0.1.0
Connected as hr
SQL>
SQL> SET SERVEROUTPUT ON
SET SERVEROUTPUT ON
SQL> DECLARE
DECLARE
2     TYPE rec_names IS RECORD(
   TYPE rec_names IS RECORD(
3        cod_cli1 VARCHAR(6) := '0',
      cod_cli1 VARCHAR(6) := '0',
4        zipcode1 CHAR(8),
      zipcode1 CHAR(8),
5        city1    VARCHAR2(30),
      city1    VARCHAR2(30),
6        state1   CHAR(2),
      state1   CHAR(2),
7        cod_cli2 VARCHAR(6),
      cod_cli2 VARCHAR(6),
8        zipcode2 CHAR(8),
      zipcode2 CHAR(8),
9        city2    VARCHAR2(30),
      city2    VARCHAR2(30),
10        state2   CHAR(2));
      state2   CHAR(2));
11     v_rec_names rec_names;
   v_rec_names rec_names;
12 BEGIN
BEGIN
13     DBMS_OUTPUT.put_line('v_rec_names.cod_cli1:' || v_rec_names.cod_cli1);
   DBMS_OUTPUT.put_line('v_rec_names.cod_cli1:' || v_rec_names.cod_cli1);
14     v_rec_names.cod_cli1 := 'b';
   v_rec_names.cod_cli1 := 'b';
15     DBMS_OUTPUT.put_line('v_rec_names.cod_cli1:' || v_rec_names.cod_cli1);
   DBMS_OUTPUT.put_line('v_rec_names.cod_cli1:' || v_rec_names.cod_cli1);
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17 /
v_rec_names.cod_cli1:0
v_rec_names.cod_cli1:b
PL/SQL procedure successfully completed
SQL> Regards,

How to initialize Object Array Data Provider (OADP)with data from txt file

Hi,
I want to show in a table some columnar data from a txt file. I ran the creator demo application on OADP successfully. http://blogs.sun.com/divas/entry/using_the_object_array_data
I created a javabean class to read a txt file.However, I am stuck at how I can fill the data into an OADP array:
I am familiar with C extensively but not much at java. can anyone help??
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Thanks for that. I changed it a little bit, but when i ran this script, got ORA-06532: Subscript outside of limit.
declare
O_voucher_comment SYSADM.AP_COMMENT_COLL := sysadm.ap_comment_coll(null);
begin
FAS_AP_EXCEPTIONS.GET_VOUCHER_COMMENTS('FCCAN', '20494753', 0, 'KEHE', O_voucher_comment);
end;
PROCEDURE get_voucher_comments (
v_bu_in IN VARCHAR2,
v_voucher_in IN VARCHAR2,
v_line_in IN NUMBER,
v_userid IN VARCHAR2,
voucher_comment OUT      sysadm.ap_comment_coll
IS
i NUMBER := 1;
v_comments VARCHAR2 (254) := ' ';
comment_type sysadm.ap_comment_type;
v_line_num NUMBER := 0;
CURSOR get_all_comment
IS
SELECT voucher_line_num, descr254_mixed FROM ps_fas_ap_comment
WHERE business_unit = v_bu_in AND voucher_id = v_voucher_in;
CURSOR get_line_comment
IS
SELECT descr254_mixed FROM ps_fas_ap_comment
WHERE business_unit = v_bu_in AND voucher_id = v_voucher_in
AND voucher_line_num = v_line_in;
BEGIN
--voucher_comment() := SYSADM.ap_comment_type (NULL, NULL, NULL, NULL, NULL, NULL);
--' ', ' ', 0, ' ', '', ' ' sysadm.ap_comment_coll
voucher_comment := sysadm.ap_comment_coll(null);
IF v_line_in = 0
THEN
OPEN get_all_comment;
LOOP
FETCH get_all_comment
INTO v_line_num, v_comments;
          if i > 1
          then
               voucher_comment.EXTEND;
          end if;
voucher_comment (i) := ap_comment_type (v_bu_in,
v_voucher_in, v_line_num, v_userid,
TO_DATE (TO_CHAR (SYSDATE, 'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS'), v_comments );
i := i + 1;
END LOOP;
ELSE
OPEN get_line_comment;
LOOP
FETCH get_line_comment
INTO v_comments;
          voucher_comment.extend(6);
voucher_comment (i) := ap_comment_type (v_bu_in, v_voucher_in, v_line_num, v_userid, TO_DATE (TO_CHAR (SYSDATE, 'DD-MON-YYYY HH24:MI:SS' ), 'DD-MON-YYYY HH24:MI:SS'), v_comments);
i := i + 1;
END LOOP;
END IF;
END get_voucher_comments;

Attempting to initialize an array of MAX Aliases is throwing an error on first loop's iteration...

Hey folks,
I'm gonna ttach a photo of what's in place right now.
I think the DELAY init vi is good to go for this application because I have it working in another vi but it's just not applied in the same array/for-loop config.
However inside that init vi, I get an error from the VISA Open. (Only when I try to execute the code in the looped fashion at the top of the picture). Do any of you guys see anything I'm missing here? It's almost like the string element (alias name) isn't being indexed into place?
Thanks for your time!
-pat
Solved!
Go to Solution.
Attachments:
thanks for looking.JPG ‏126 KB

These are two other attempts I couldn't get to work either (the init vi is the same).
EDIT: just noticed that my error in isn't wired up... but it still doesnt work with it wired in, I thought maybe I got the old error on the first iteration... got excited.
Attachments:
Delay DVR Array.jpg ‏100 KB
Delay DVR Array 2.jpg ‏127 KB

How Do I Initialize an Array of Array Objects?

I have an NSMutableArray object that stores NSMutableArray objects.
For example
- (void)loadMainArray
NSMutableArray *tempAry = [[NSMutableArray alloc] init];
//mainArray defined in header
self.mainArray = tempAry;
self.mainArray = [self loadSubArrays];
[tempAry release];
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NSMutableArray *tempAry = [[NSMutableArray alloc] init];
self.subArray = tempAry; //subArray defined in header
[tempAry release];
//populate subArray with data using [subArray addObject:blah]
return self.subArray;
This works perfectly when first running the app. Each successive call however to loadMainArray fails, causing a “EXCBADACCESS” error. I'm assuming that once that mainArray is populated, it isn't as easy as just re-assigning it. I have tried running through the array and removing the objects one by one. That doesn't work. I have tried re-initializing the entire array (as shown)...doesn't work...I'm stuck...any ideas what might be the problem?
If it helps, this is how I have defined mainArray and subArray in my headers:
NSMutableArray *mainArray;
@property (nonatomic, retain) NSMutableArray *mainArray;

mnemonic_fx wrote:
Why do it in such a inconvenient way ?
- (NSMutableArray *)loadSubArrays
self.subArray = [NSMutableArray array]; //subArray defined in header
// populate subArray with data using [subArray addObject:blah]
return self.subArray;
- (void)loadMainArray
//mainArray defined in header
self.mainArray = [NSMutableArray arrayWithArray:[self loadSubArrays]];
Message was edited by: mnemonic_fx
Unfortunately, this gives the same exact error. Just to be a bit more clear, my mainArray consists of n subArray objects. Each subArray object consists of m objects. (where 'n' and 'm' are variable depending on the data I'm loading)
When I first launch my app, my mainArray object loads just fine. However, when I try to alter my mainArray object in ANY way once it is populated, it crashes with the above error. I have tried to manually go through and do a replaceObjectAtIndex for each individual element. I have tried to just release the entire array, I have tried to call my loadSubArray method which returns a full new list. I'm not finding any debug info that is helping me with the issue.
any info would be great!

How to initialize the array with object?

Here is type I have.
CREATE OR REPLACE TYPE SYSADM.AP_COMMENT_TYPE AS OBJECT
BU_AP VARCHAR2(5),
VOUCHER VARCHAR2(10),
V_LINE INTEGER,
USERID VARCHAR2(20),
COMMENT_DTTM DATE,
COMMENT VARCHAR2(254)
CREATE OR REPLACE TYPE SYSADM.AP_COMMENT_COLL AS VARRAY(1000) OF SYSADM.AP_COMMENT_TYPE;
Then I created a procedure to grab some data.
PROCEDURE get_voucher_comments (
v_bu_in IN VARCHAR2,
v_voucher_in IN VARCHAR2,
v_line_in IN NUMBER,
v_userid IN VARCHAR2,
voucher_comment OUT      sysadm.ap_comment_coll
IS
i NUMBER := 1;
v_comments VARCHAR2 (254) := ' ';
comment_type sysadm.ap_comment_type;
v_line_num NUMBER := 0;
CURSOR get_all_comment
IS
SELECT voucher_line_num, descr254_mixed
FROM ps_fas_ap_comment
WHERE business_unit = voucher_comment (i).bu_ap
AND voucher_id = voucher_comment (i).voucher;
CURSOR get_line_comment
IS
SELECT descr254_mixed
FROM ps_fas_ap_comment
WHERE business_unit = voucher_comment (i).bu_ap
AND voucher_id = voucher_comment (i).voucher
AND voucher_line_num = voucher_comment (i).v_line;
BEGIN
voucher_comment (1) := ap_comment_type (' ', ' ', 0, ' ', '', ' ');
--voucher_comment (1) := ap_comment_type (null, null, null, null, null,null);
IF voucher_comment (i).v_line = 0
THEN
OPEN get_all_comment;
LOOP
FETCH get_all_comment
INTO v_line_num, v_comments;
          voucher_comment.EXTEND;
voucher_comment (i) :=
ap_comment_type (v_bu_in,
v_voucher_in,
v_line_num,
v_userid,
TO_DATE (TO_CHAR (SYSDATE,
'DD-MON-YYYY HH24:MI:SS'
'DD-MON-YYYY HH24:MI:SS'
v_comments
i := i + 1;
END LOOP;
ELSE
OPEN get_line_comment;
LOOP
FETCH get_line_comment
INTO v_comments;
          voucher_comment.EXTEND;
voucher_comment (i) :=
ap_comment_type (v_bu_in,
v_voucher_in,
v_line_num,
v_userid,
TO_DATE (TO_CHAR (SYSDATE,
'DD-MON-YYYY HH24:MI:SS'
'DD-MON-YYYY HH24:MI:SS'
v_comments
i := i + 1;
END LOOP;
END IF;
END get_voucher_comments;
But when I tried to test the procedure, got error: ORA-06531: Reference to uninitialized collection. Does anyone have experience of handling array with object?
declare
O_voucher_comment SYSADM.AP_COMMENT_COLL;
begin
FAS_AP_EXCEPTIONS.GET_VOUCHER_COMMENTS('FCCAN', '20494753', 1, 'KEHE', O_voucher_comment);
end;

Thanks for that. I changed it a little bit, but when i ran this script, got ORA-06532: Subscript outside of limit.
declare
O_voucher_comment SYSADM.AP_COMMENT_COLL := sysadm.ap_comment_coll(null);
begin
FAS_AP_EXCEPTIONS.GET_VOUCHER_COMMENTS('FCCAN', '20494753', 0, 'KEHE', O_voucher_comment);
end;
PROCEDURE get_voucher_comments (
v_bu_in IN VARCHAR2,
v_voucher_in IN VARCHAR2,
v_line_in IN NUMBER,
v_userid IN VARCHAR2,
voucher_comment OUT      sysadm.ap_comment_coll
IS
i NUMBER := 1;
v_comments VARCHAR2 (254) := ' ';
comment_type sysadm.ap_comment_type;
v_line_num NUMBER := 0;
CURSOR get_all_comment
IS
SELECT voucher_line_num, descr254_mixed FROM ps_fas_ap_comment
WHERE business_unit = v_bu_in AND voucher_id = v_voucher_in;
CURSOR get_line_comment
IS
SELECT descr254_mixed FROM ps_fas_ap_comment
WHERE business_unit = v_bu_in AND voucher_id = v_voucher_in
AND voucher_line_num = v_line_in;
BEGIN
--voucher_comment() := SYSADM.ap_comment_type (NULL, NULL, NULL, NULL, NULL, NULL);
--' ', ' ', 0, ' ', '', ' ' sysadm.ap_comment_coll
voucher_comment := sysadm.ap_comment_coll(null);
IF v_line_in = 0
THEN
OPEN get_all_comment;
LOOP
FETCH get_all_comment
INTO v_line_num, v_comments;
          if i > 1
          then
               voucher_comment.EXTEND;
          end if;
voucher_comment (i) := ap_comment_type (v_bu_in,
v_voucher_in, v_line_num, v_userid,
TO_DATE (TO_CHAR (SYSDATE, 'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS'), v_comments );
i := i + 1;
END LOOP;
ELSE
OPEN get_line_comment;
LOOP
FETCH get_line_comment
INTO v_comments;
          voucher_comment.extend(6);
voucher_comment (i) := ap_comment_type (v_bu_in, v_voucher_in, v_line_num, v_userid, TO_DATE (TO_CHAR (SYSDATE, 'DD-MON-YYYY HH24:MI:SS' ), 'DD-MON-YYYY HH24:MI:SS'), v_comments);
i := i + 1;
END LOOP;
END IF;
END get_voucher_comments;

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