How to write a function block?

Hi There,
Does anybody know how to write a function block with LabVIEW? Something like those in Real-Time VIs>>Function Blocks>>.
Thank you very much in advance?
Solved!
Go to Solution.

I don't want to overwelm you but there is tons of free training material online. One of these is the one already mentioned.
NI Learning Center
NI Getting Started
-Hardware Basics
-LabVEW Basics
-DAQ Application Tutorials
3 Hour LabVIEW Introduction
6 Hour LabVIEW Introduction
Self Paced training for students
Self Paced training beginner to advanced, SSP Required
LabVIEW Wiki on Training
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.

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How to write a function generator from labview and using PCI-MIO-16

Hallo, [email protected],
Du (x) meintest am 27.07.01 zum Thema How to write a function generator:
> How to write a function generator from labview and using PCI-MIO-16
Look to the examples - there are many VIs with that function.
Viele Gruesse!
Helmut

How to write Boolean function (If Then Else)?

Hi all,
I have a logic to write in the query. It is:
If (A = 0 and B = 0)
Then 0
Else
        If (A = 0 and B > 0)
        Then 100
        Else
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How to use boolean function to write this Netted If Else statement? Thank you in advance!

Hi
If (A = 0 and B = 0)
Then 0
Else
If (A = 0 and B > 0)
Then 100
Else
A/B (we want to show %)
1. create a formula in the query designer. and use this formula for if - else
( ( (A==0) AND (B==0) ) * 0) + ( ( a==0 ) AND (B >0 ) * 100 + (A/B*100) )
: denotes THEN
+ : denotes ELSE
See if this works.
Assign points if helpfull
From
ManesH

How to write a function read line from a file in FDK?

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I want to write a function that can read a file in line by line in FDK. How do I write it. If FDK could not. Is there any the way? Please help.
Thank you,
Thai Nguyen

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You can use the "channel" functions for this. I'm far from an expert on channel programming but I've read files line-by-line successfully by going one character at a time, looking for a carriage return.
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FilePathT *path;
UCharT ptr[1];
IntT numRead;
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How to write printing function using JSP?

dear all,
i want to add a printing function in my project but i do not know how to do it? could anyone teach me how to do it?
thanks
eric

salut eric,
you can do it this way :
1 - create a html link in your code to this javascript
function : (I am using Struts, but you can write it in
pure html
<html:link href="#bodyStart"
onclick="openWindowForPrinting()"
titleKey="msg.status.print"> <bean:message
key='app.print' />
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</script>
</html:link>
>
>
2 - here is the javascript function : it open a window
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function openWindowForPrinting(){
window.open('/your_project/pages/common/print.jsp','',
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toolbar=no, menubar=yes, location=no, scrollbars=yes,
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example, the boby of the current page).
<%@ taglib uri='/WEB-INF/tlds/perso.tld'
prefix='perso' %>
<html>
<head>
<perso:csslink page='${cssRelativeLocation}' />
</head>
<body onload="var SymTmpWinOpen = window.open; window.open = SymWinOpen; printPage();; window.open = SymTmpWinOpen;">
<body>
<jsp:include page="${currentBodyRelativeLocation}"/>
</body>
<script language="JavaScript">

</script>
</html>
<script language='javascript'>
function printPage(){
window.print();
window.close();
</script>
hai,
i'm not very understand how is your code work. when i write html code, do i need to mind about this code: "msg.status.print" ? what is this code mean?
i have too much question on this thing. would you mind to be further explain to me? or is it any reference for me to refer? i'm really new to write printing function on JSP.
i never write this function before. i'm feel so lost.....:(
thanks again
eric

How to write a function module?

How can i write a function module that does the same thing as BAPI_FLIGHT_GETLIST in the SAP system?

Hi
Hope it will help you.
Reward if help.
Function Modules;
Check this matter.
Function Modules are Global ABAP programs created by SAP for reusable purpose.they have IMPORT,EXPORT and TABLE parameters, and EXCEPTIONS to through when error occurs.
You can create them from TCode SE37.
Go through the following doc:
Function modules are cross-program, reusable procedures that are organized into function groups, and whose functions are implemented between the statements FUNCTION and ENDFUNCTION. Function modules and their interfaces are created in the Function Builder.
Function Module Interfaces
The parameter interface of a function module is defined in the Function Builder. It includes the definition of interface parameters and the specification of exceptions that can be triggered by a function module. The Function Builder automatically generates comment lines below the FUNCTION statement in the source code of the function module, which represent the interface of the function module with the following syntax:
Syntax
... [IMPORTING parameters]
[EXPORTING parameters]
[CHANGING parameters]
[TABLES table_parameters]
[{RAISING|EXCEPTIONS} exc1 exc2 ...]
The syntax and semantics of IMPORTING, EXPORTING, CHANGING, RAISING, and EXCEPTIONS mainly correspond to the definition of method interfaces with [CLASS-]METHODS. The additional option of defining table parameters using TABLES is obsolete.
Interface parameters
The interface parameters are defined on the relevant tab pages in the Function Builder.
IMPORTING parameters are input parameters. When the function module is called, a suitable actual parameter must be specified for every non-optional input parameter. The content of the actual parameter is passed to the input parameter when the call is made. The content of an input parameter for which 'pass by reference' is defined cannot be changed in the function module.
EXPORTING parameters are output parameters. When the function module is called, a suitable actual parameter can be specified for every output parameter. The content of an output parameter that is defined for 'pass by value' is transferred to the actual parameter if the function module is completed without errors. An output parameter that is defined for pass by reference is not initialized when the function module is called.
CHANGING parameters are input and output parameters. When the function module is called, a suitable actual parameter must be specified for every non-optional input or output parameter. When the function module is called, the content of the actual parameter is passed to the input/output parameter, and when the function module is completed, the content of the input/output parameter is passed to the actual parameter.
TABLES parameters are table parameters. Table parameters are obsolete CHANGING parameters that are typed as standard tables with a header line. If an internal table without a header line or a table body is passed as an actual parameter to a formal parameter of this type, an empty local header line is generated in the function module. If an internal table with a header line is used as an actual parameter, both the table body and the header line are passed to the function module. Pass by value is not possible in formal parameters defined using TABLES. Formal parameters defined with TABLES can be replaced by formal parameters defined with CHANGING. A local work area can be created for the internal table in the function module by using the addition LIKE LINE OF itab of the DATA statement.
Exceptions
The exception of a function module are defined on the Exceptions tab page in the Function Builder. Here you can select exception classes to define whether class-based exceptions are declared or non-class-based exception are defined. Class-based exceptions are represented in the above syntax by RAISING, and non-class-based exceptions are represented by EXCEPTIONS.
The addition RAISING is used to declare class-based exceptions that can be propagated from the function module to the caller. Exceptions in the categories CX_STATIC_CHECK and CX_DYNAMIC_CHECK must be explicitly declared, otherwise a propagation can lead to an interface violation. A violation of the interface leads to the treatable exception CX_SY_NO_HANDLER. Exceptions of the category CX_NO_CHECK are implicitly always declared. The declaration of exceptions of the category CX_STATIC_CHECK is statically checked in the syntax check. For exceptions of the category CX_DYNAMIC_CHECK, the check is not performed until runtime. In a function module in which class-based exceptions are declared with the RAISING addition, the statement CATCH SYSTEM-EXCEPTIONS cannot be used. Instead, the relevant treatable exceptions should be handled in a TRY control structure.
The addition EXCEPTIONS is used to define a list of non-class-based exceptions that can be triggered in the function module using the statements RAISE or MESSAGE RAISING. Exceptions defined in this way - as with formal parameters - are bound to the function module and cannot be propagated. If an exception of this type is triggered in a function module, and no return value has been assigned to it with the homonymous addition EXCEPTIONS of the CALL FUNCTION statement when the call was made, this leads to a runtime error.
Note
For new developments after release 6.10, SAP recommends that you work with class-based exceptions that are independent of the function module.
RFC is a technology which is used to access a functions (Modules) from
the remote systems.
If a function module is set as remote enabled which can be access from
the remote system via RFC.Eg: U can access the Remote enabled function modules in ur VB,Webdynpro,Java,Visual composer program.
A function module can be set as remote enabled by SE37->Go to ur FM->click the option Button "remote enabled".
But Normal function modules can not accessd from the remote system.
Good Example for RFC enabled function module is : BAPI(Business Application Programming Interface)
Note: All BAPIs are Remote enabled but not all remote enabled function modules are BAPI.
CALLING A FUNCTION MODULE:
1)In U ABAP Editor --> Click "Patter" ---> Selection Option Button "Call Function"
--> Write the Corresponding FM name --> Hit Enter
2)The appropriate import ,export Parameters will be displayed in ur editor
3)Pass the Values Here.
Also check these links.
http://www.geocities.com/victorav15/sapr3/abapfun.html
Check this link:
http://help.sap.com/saphelp_erp2004/helpdata/en/9f/db988735c111d1829f0000e829fbfe/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/ef/d94b78ebf811d295b100a0c94260a5/frameset.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/43/41341147041806e10000000a1553f6/frameset.htm
Check this link:
http://help.sap.com/saphelp_erp2004/helpdata/en/9f/db988735c111d1829f0000e829fbfe/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/ef/d94b78ebf811d295b100a0c94260a5/frameset.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/43/41341147041806e10000000a1553f6/frameset.htm
See the following links:
http://help.sap.com/saphelp_erp2005vp/helpdata/en/9f/db970e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_erp2005vp/helpdata/en/9f/db970e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_erp2005vp/helpdata/en/9f/db970e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_erp2005vp/helpdata/en/9f/db970e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_erp2005vp/helpdata/en/9f/db970e35c111d1829f0000e829fbfe/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/26/64f623fa8911d386e70000e82011b8/content.htm

How to write selection-screen block on 15th position?

Hello all,
I want to write selection-screen block on 15th position, How can I do this?
I know that we can write parameter/select-option on perticuler position using following code.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE t7.
SELECTION-SCREEN BEGIN OF LINE.
SELECTION-SCREEN POSITION 15.
PARAMETERS: fdat LIKE SY-DATUM,
SELECTION-SCREEN END OF LINE.
SELECTION-SCREEN END OF BLOCK b1.
It writes parameter(FDAT) on 15th position. How can I write whole block on 15th position?

Hi,
For this u have to use comment lines. See the below simple program...
SELECTION-SCREEN COMMENT /2(50) TEXT-001 MODIF ID SC1.
SELECTION-SCREEN SKIP 2.
SELECTION-SCREEN COMMENT /10(30) COMM1.
SELECTION-SCREEN ULINE.
PARAMETERS: R1 RADIOBUTTON GROUP RAD1,
R2 RADIOBUTTON GROUP RAD1,
R3 RADIOBUTTON GROUP RAD1.
SELECTION-SCREEN ULINE /1(50).
SELECTION-SCREEN COMMENT /10(30) COMM2.
SELECTION-SCREEN ULINE.
PARAMETERS: S1 RADIOBUTTON GROUP RAD2,
S2 RADIOBUTTON GROUP RAD2,
S3 RADIOBUTTON GROUP RAD2.
SELECTION-SCREEN ULINE /1(50).
INITIALIZATION.
COMM1 ='Radio Button Group 1'.
COMM2 ='Radio Button Group 2'.
LOOP AT SCREEN.
IF SCREEN-GROUP1 = 'SC1'.
SCREEN-INTENSIFIED = '1'.
MODIFY SCREEN.
ENDIF.
ENDLOOP.

How to write exit functions

Hi
i have to write exit functions in bps.can any body tell me how these are to be written.please explain the structure and flow of exit functions.please explain me in detail if posiible give me some links for exit functions.
thanks and regards,
sekhar reddy

Hi Sekhar,
Go through the below links
Re: user exit
https://websmp104.sap-ag.de/~sapidb/011000358700005475091999
https://websmp104.sap-ag.de/~sapidb/011000358700005475101999
Hope it helps
Regards

How to write a function

Is there a way to write a function
function f(c sys_refcursor) return number;
which is called from sql (for example like this)
select f( cursor(...) ) from dual
and returns the number of columns specified in the cursor expression;
One suggestion could be to use the dbms_sql package, but it is impossible to invoke the dbms_sql.to_cursor_number function as it wants IN OUT parameter, and SQL doesn't allow in out parameters. so what to do.
thanks in advance

DimaK wrote:
Is there a way to write a function
function f(c sys_refcursor) return number;
which is called from sql (for example like this)Yes. If this is truly needed - yes, you can create a cursor handle in SQL and pass that to a PL function to process. Example:
SQL> create or replace function FunkyFoo( c sys_refcursor ) return varchar2 is
2          type TStrings is table of varchar2(4000);
3          buffer          TStrings;
4          csvLine         varchar2(4000);
5 begin
6          fetch c bulk collect into buffer limit 10;
7          close c;
8
9          for i in 1..buffer.Count
10          loop
11                  csvLine := csvLine || buffer(i);
12                  if i != buffer.Count then
13                          csvLine := csvLine || ',';
14                  end if;
15          end loop;
16
17          return( csvLine );
18 end;
19 /
Function created.
SQL> show errors
No errors.
SQL>
SQL> col LINE format a50
SQL> select
2          FunkyFoo( cursor(select object_name from user_objects order by 1) ) as LINE
3 from dual
4 /
LINE
FUNKYFOO,TOKENISE,TSTRINGS,WEBURL
SQL>
and returns the number of columns specified in the cursor expression;No. Reason - a ref cursor does not have a describe interface. Thus you cannot determine the SQL projection of the cursor and number of columns, column labels and column data types and precision in the projection.
But the question is.. why on earth do you want to have such a function? What purpose is it suppose to fulfill? What is the underlying requirement that needs to be met? As from what you've stated here, it seems to be pursuing a very incorrect solution for the unknown problem at hand.

How to write a function with table name as parameter

I created a function like this:
create or replace function "GETNAME"
(did in NUMBER, dtable in VARCHAR2)
return VARCHAR2
is
dname varchar2(200);
begin
select lastname || ' ' || firstname
into dname from dtable
where id = did;
return dname;
end;
i got an error: table or view does not exist.
Could somebody tell me how to fix it?
Thanks,
Jen

or by using a reference cursor: create or replace function dynamic_cursor (pTab varchar2)
    return sys_refcursor as
    c sys_refcursor;
begin
    open c for 'select * from '|| pTab;
    return c;
end;
SQL> exec :c := dnamic_cursor('emp');
SQL> exec :c := dynamic_cursor('emp');
PL/SQL procedure successfully completed.
SQL> print c;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7566 JONES      MANAGER         7839 02-APR-81       2975       1000         20
      7902 FORD       ANALYST         7566 03-DEC-81       3000                    20
      7839 KING       PRESIDENT            17-NOV-81       5000                    10
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7369 SMITH      CLERK           7902 17-DEC-80        800                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
      7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30
      7788 SCOTT      ANALYST         7566 09-DEC-82       3000                    20
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7876 ADAMS      CLERK           7788 12-JAN-83       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
      7934 MILLER     CLERK           7782 23-JAN-82       1300                    10
      7945 CINDY      SALESMAN        7698 16-JAN-83       1800                    30
      7950 TINA       SALESMAN        7698 18-JAN-83       1850                    30
16 rows selected.
SQL>

How to write a function to find weekday

my code as follow:
create or replace function getweekday(arg_day_IN VARCHAR2)
RETURN varchar2
IS
arg_day VARCHAR2(8) := arg_day_IN;
ls_week VARCHAR2(1);
ls_week_name VARCHAR2(4);
ls_date_1 date;
BEGIN
ls_date_1 := to_char(SUBSTR(arg_day, 5, 2) || '-' || SUBSTR(arg_day, 7, 2) )|| '-' ||SUBSTR(arg_day, 1, 4));
ls_week := OMWB_emulation.utilities.WEEKDAY(ls_date_1);
RETURN ls_week;
END getweekday;
There is a problem that when i execute this function it returns a error code ora-01843, it shows that it is not a valid month.
How can I know what is a valid month format? How to find the correct month format?
Which one is the valid date format- 02-01-2004 or 02-Jan-2004 or 02-January-2004.
Please help me to solve this problem. Thanks a lot.

If the input parameter format is 'yyyymmdd' you can do:
create or replace function getweekday(arg_day_IN VARCHAR2)
RETURN varchar2
IS
ls_week VARCHAR2(1);
BEGIN
ls_week := to_char(to_date(agr_day_IN,'yyyymmdd'),'D');
RETURN ls_week;
END getweekday;

How to write a function to move MC

I am not really experienced in AS.
I would like to write a simple function which would move a MC
on _x or _y coordinates, both ways - left to right, right to left,
up to down, down to up.
Than I want to call this function whenever I need to move
some MC objects on the stage, just giving the START point (x,y) and
the END point (x,y).
Could anyone help me? please ...

Hi,
I have written a function to solve your problem
use this
function moveMc(movName:MovieClip, from_x:Number,
from_y:Number, to_x:Number, to_y:Number) {
movName._x = from_x;
movName._y = from_y;
movName.onEnterFrame = function() {
(this._x<to_x) ? this._x++ : this._x--;
(this._y<to_y) ? this._y++ : this._y--;
(Math.floor(this._x) == to_x and Math.floor(this._y) ==
to_y) ? delete this.onEnterFrame : nothing;
moveMc(my_mc, 0, 0, 500, 500);
cool :)
Arun

How to write global functions?

Hi,
I have some functionality in my app that I feel will be used
in multiple places. Typically in HTML/Javascript I could do:
<script type="Javascript"
src="js/functions.js"></script>
In the functions.js file I could have various functions and
call them from any display page.
How can I have a set of functions like this in
Flex/ActionScript? For example I have a couple of places where a
user can "Add an Employee" for example. I'd like to call the same
function.
How can I globally include some functions so they can be
called from anywhere in my application.
-Westside

2 things:
instead of doing
<mx:Script>
<![CDATA[
functions here...
]]>
</mx:Script>
make a new actionscript file, code.as or whatever you want to
call it.
then you can do <mx:Script source="code.as"/> and put
your actionscript code inside the file like you would inside of
CDATA.
also, SharedObjects are useful for sharing variables between
different mxml files.
they go something like this:
public var sharedVariables:SharedObject =
SharedObject.getLocal("variables");
(this will need to be decalred in each script)
to set or retrieve a value you do this:
sharedVariables.data.myVariable = new String();
sharedVariables.data.myVariable = 'string here';
on a further note: SharedObjects are written to the local
file system, the user's/client's file system, useful if you need to
store keep settings for a user or something like that. Also,
getLocal will create the file if it doesn't exsist already, if it
does.. it just reads it. Read the docs on SharedObject.
you will probably find those 2 things useful if you dont
already know about them.

How to write Boolean function (If Then Else) For Date Caluclation.

Dear All,
I have a scenario where i need to calculate Position time hold by an employee in an organisation.
I have 2 date Char ( DATE FROM & DATE TO), the problem is that is , If an employee is having
2/3 position in an organisation its current position End Date is always 31.12.999 as its End date is
not know. For previous position End Date is maintained.
My requirement is to calculate Position hold time including Current position.
Can it be done directly in formula variable with If Then Else condition.
or i need to write user exit if its exit,
please guide me for ABAP Code.
Thanks V V much.
Regards,

Hi,
Following options are available for you:
1. Is the valid to, valid from dates available as a result of standard time dependency of navigational attributes? if yes , you can not use them in calculations, in such case you may have to write a full fledged routine at formula variable, using uxer exit.
2. Another simple method, that i would suggest would be using temporal joins (infoSets), that precisely fits you case.
Helpful links:
About Infosets:
[http://help.sap.com/saphelp_nw70/helpdata/EN/ed/084e3ce0f9fe3fe10000000a114084/frameset.htm]
About Temporal joins:
[http://help.sap.com/saphelp_nw70/helpdata/EN/11/723c3b35703079e10000000a114084/frameset.htm]
Hope this helps.
Cheers,
Sumit

How to write decode function in plsql

hi
guys
can u plz help me in this topic
.........

Hi ,
You could use the decode function in an SQL statement as follows:
SELECT supplier_name,
decode(supplier_id,      10000,      'IBM',
     10001,      'Microsoft',
     10002,      'Hewlett Packard',
          'Gateway') result
FROM suppliers;
The above decode statement is equivalent to the following IF-THEN-ELSE statement:
IF supplier_id = 10000 THEN
result := 'IBM';
ELSIF supplier_id = 10001 THEN
result := 'Microsoft';
ELSIF supplier_id = 10002 THEN
result := 'Hewlett Packard';
ELSE
result := 'Gateway';
END IF;
The decode function will compare each supplier_id value, one by one.
Regards,
xaheer

How to write a function block?

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