Accessing Matlab functions

Is it possible to access Matlab functions (m-files) in Labview.
Is there a dll that fixes the problem?
I don't know how to calculate feedback gains using the lqr-algorithm and
kalman and that sort of stuff...
Thanks
Toon

Under LabVIEW 5.1 and higher, there are a number of excellent additional
Mathematics functions built into the palette, including a Matlab script formula
node. If you've got LabVIEW 5.1 under 32-bit Windows, you can simply pop one of
these nodes down on your diagram, right-click it to import your m-file, and
you're all set.
Depending on your OS and your versions of LabVIEW and Matlab, there will
probably be additional possible ways to communicate between the two
applications, but if you're doing a lot of Matlab integration, LabVIEW 5.1 is a
good investment.
Regards,
John Lum
National Instruments
Toine wrote:
> Is it possible to access Matlab functions (m-files) in Labview.
> Is there a dll that fixes the problem?
>
> I don't know how to calculate feedback ga
ins using the lqr-algorithm and
> kalman and that sort of stuff...
>
> Thanks
>
> Toon

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Error - Creating a Web Dynpro Application Accessing ABAP Functions

Dear All,
we are trying to implement a web dynpro application with accessing ABAP functions.
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Some hints:
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System.err] [Invoked from com.sap.s2x.tools.GUID.getnodeaddress(GUID.java:585)]
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-     Im able to start the application out of the Web Dynpro content manager with run => only the user interface is displayed without any functionality
-     The normal start over the NWDS fails => error text
com.sap.tc.webdynpro.services.sal.core.DispatcherException: The requested deployable object 'local/J08_Flugdat_Daventdcflight~xxx.com' and application 'FlightListApp' are not deployed on the server. Please check the used URL for typos.
There two different URLs in use.
Start via NWDS:
http://frasapp562:50000/webdynpro/dispatcher/J08_Flugdat_Daventdcflight~xxx.com/FlightListApp
Start via web dynpro content manager:
http://frasapp562:50000/webdynpro/dispatcher/xxx.com/aventdc~flight/FlightListApp
For test purposes, we started the BAPI (BAPI_Flight_Getlist) on the ABAP system directly. It works.
Any ideas about the system behaviours (different URLs and missing functionality)?
Thanks a lot in advanced!
Best regards
Christoph

The Error has been solved The implementation of a method was missing....
Thx
Christoph

Accessing ABAP Functions in Web Dynpro

Hi all,
for testing reasons I would like to implement a simple Web Dynpro Application which access APAP functions (or BAPIs) on a remote SAP backend system. The problem is that I dont have a SAP backend system
There is a tutorial :
<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/355b9c90-0201-0010-d2a8-89fece426526">https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/355b9c90-0201-0010-d2a8-89fece426526</a>
which states some prerequisites.
My question:
Is it possible to comply to all these prerequisites by installing NetWeaver Preview and minisap as remote SAP backend system ? Where can I get minisap ?
I'm quite new to SAP so I'm al little unsure which part belongs where.
Maybe someone can give me a hint.
Thanx a lot

Hi Oliver,
here you can download all you need:
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/library/uuid/cfc19866-0401-0010-35b2-dc8158247fb6
Note: read the column comment in the page to understand what you need (java or abap stack).
Hope this help you,
Vito

Accessing ABAP Functions in Web Dynpro Java

Hi,
I am trynig to do "Accessing ABAP Functions in Web Dynpro Java" this application, (which is the example application which i got from www.sdn.sap.com) but everything is fine no error also while dyploying.
But it is not dysplaying the first page after i run the application i am getting plain web page ,without any content.
Can any body help me.
Regards,
H.V.Swathi

k.. now iam getting some error on page.
I have embeded the two view in to window.
But now after running the application i am getting connection error
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=jktr3 GROUP=SPACE R3NAME=R32 MSSERV=sapmsR32 PCS=1 ERROR Group SPACE not found TIME Fri Sep 26 15:05:59 2008 RELEASE 700 COMPONENT LG VERSION 5 RC -6 MODULE lgxx.c LINE 4288 DETAIL LgIGroupX COUNTER 1
    at com.sap.mw.jco.MiddlewareJRfc.generateJCoException(MiddlewareJRfc.java:457)
    at com.sap.mw.jco.MiddlewareJRfc$Client.connect(MiddlewareJRfc.java:989)
    at com.sap.mw.jco.JCO$Client.connect(JCO.java:3193)
    at com.sap.dictionary.runtime.mdi.DataProvider.<init>(DataProvider.java:90)
    at com.sap.dictionary.runtime.mdi.DataProvider.<init>(DataProvider.java:122)
    ... 61 more
Rgards,
H.V.Swathi

Web Dynpro Application Accessing ABAP Functions

I wrote the example application for Web Dynpro Application Accessing ABAP Functions, as described in the tutorials for NWDS. But when I run, it only show me a blank blue page nothing else, how to fix this issue?
Thanks,
Jawed Ali

Hi Jawed,
Again, I'll insist you to please check if your view is embeded in the Window.
write some output message in the view to ensure that not only gui's, even the messages in the view are not coming.
if there is another issue, Please share with us.
Thank & Regards,
Namrta Mahajan

Creating a Web Dynpro Application Accessing ABAP Functions

Hi all,
I implemented Creating a Web Dynpro Application Accessing ABAP Functions .But recently i heared a new word BW query.Is it not wat i did in the above application or is this a new backend sytem , does it have a new procedure to create model for BW Query in webdynpro rather than what i did in the above app
Regards
Padma N

The Error has been solved The implementation of a method was missing....
Thx
Christoph

Accessing the functions in C

Hai,
I am new to JNI world. I want to access the functions that are written in C using JNI, can any one of you tell me some references to the sample code. Also is it necessary to convert the data types that are used in the C functions with the JNI data type ? Thanks in advance,
Bala

see my post to the previous thread about accessing the wndows registry.

I can access a function in a package using OCI drivers but not PDO drivers

Hello all, i am a newbie to Oracle and its drivers for PHP. I would like to use PDO, and I have my database activity in packages, which have procedures and functions. My package has overloaded functions and that has been giving me a tough time with these drivers. So one signature of my function get_data contains a four arguments and all four are numbers, while another signature of get_data has the first two as numbers and the next two as varchar2. So when I try to access this function which is part of a package, I am able to retrieve data, and the driver I am using is OCI8, but when I try to do the same with PDO, it does not work. It gives me this error,
*General error: 6553 OCIStmtExecute: ORA-06553: PLS-307: too many declarations of 'GET_DATA' match this call (/var/www/php-5.3.3/ext/pdo_oci/oci_statement.c:146)' in /var/www/pdo_check.php:251 Stack trace: #0 /var/www/pdo_check.php(251): PDOStatement->execute() #1 /var/www/pdo_check.php(345): dbPDO->execPackage2() #2 {main} thrown in /var/www/pdo_check.php on line 251 *
I got this error earlier with OCI drivers, then I added the datatype while binding the values.
Has anybody had this headache earlier??
##Works
*$qu = oci_parse($connect, 'select pack.get_data(:p1,:p2,:p3,:p4)as rc from dual');
$p1 = (int)121;
$p2 = (int)222;
$p3 = (int)324;
$p4 = (int)001;
oci_bind_by_name($qu,":p1",$p1,10,OCI_B_INT);
oci_bind_by_name($qu,":p2",$p2,10,OCI_B_INT);
oci_bind_by_name($qu,":p3",$p3,10,OCI_B_INT);
oci_bind_by_name($qu,":p4",$p4,10,OCI_B_INT);
oci_execute($qu) or die("did not execute");
$r = oci_fetch_array($qu);*
##Does not work
*$sql = 'select pack.get_data(:p1,:p2,:p3,:p4) from dual';
$result = $this->dbConnect->prepare($sql);
$p1 = (int)2;
$p2 = (int)2;
$p3 = (int)2;
$p4 = (int)6;
$result->bindParam(':p1', $p1, PDO::PARAM_INT);
$result->bindParam(':p2', $p2, PDO::PARAM_INT);
$result->bindParam(':p3', $p3, PDO::PARAM_INT);
$result->bindParam(':p4', $p4, PDO::PARAM_INT);
$result->execute();*
I am still perplexed why is PDO giving me an error, when I have virtually mentioned everything is asks for?

I think the only person who can really answer this question is Chris Jones. For my money I tend to steer clear of PDO as it is a bit quirky ( at least in my experience ) and it does not support reference cursors.

What is the Oracle equivalent of the Microsoft Access FIRST function?

Using: Oracle 10gR2 RAC on SUSE Linux 9 (10.2.0.3)
In the process of converting a Microsoft Access database to Oracle, an Access query is using the FIRST function.
What is the Oracle equivalent of the Microsoft Access FIRST function?
In the attempt to convert, the Oracle FIRST_VALUE function was used. However, the same results was not achieved.
Thanks,
(BLL)
Query:
h2. ACCESS:
SELECT
     TRE.GCUSNO,
     UCASE([DCUSNO]) AS DCUSNO_STD,
     *FIRST(UCASE([DNAME])) AS DNAME_STD*,
     *FIRST(UCASE([DADDR])) AS DADDR_STD*,
     *FIRST(UCASE([DCITY])) AS DCITY_STD*,
     TRE.DSTATE,
     FIRST(TRE.DZIP) AS DZIP,
     TRE.DREGN,
     TRE.DDIST,
     TRE.DSLSMN,
     TRE.DCHAIN,
     TRE.MARKET,
     TRE.MKTPGM,
     TRE.EUMKT
FROM
     TRE
GROUP BY
     TRE.GCUSNO,
     UCASE([DCUSNO]),
     TRE.DSTATE,
     TRE.DREGN,
     TRE.DDIST,
     TRE.DSLSMN,
     TRE.DCHAIN,
     TRE.MARKET,
     TRE.MKTPGM,
     TRE.EUMKT;
h2. ORACLE:
SELECT DISTINCT
TRE.GCUSNO,
UPPER(TRIM(TRE.DCUSNO)) AS DCUSNO_STD,
UPPER(TRIM(TRE.DNAME)) AS DNAME_STD,
UPPER(TRIM(TRE.DADDR)) AS DADDR_STD,
     FIRST_VALUE(UPPER(TRIM(TRE.DNAME)) IGNORE NULLS) OVER (ORDER BY TRE.GCUSNO) AS DNAME_STD,
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     FIRST_VALUE(UPPER(TRIM(TRE.DCITY)) IGNORE NULLS) OVER (ORDER BY TRE.GCUSNO) AS DCITY_STD,
TRE.DSTATE,
TRE.DZIP,
FIRST_VALUE(UPPER(TRIM(TRE.DZIP)) IGNORE NULLS) OVER (ORDER BY TRE.DZIP ASC) AS DZIP,
TRE.DREGN,
TRE.DDIST,
TRE.DSLSMN,
TRE.DCHAIN,
TRE.MARKET,
TRE.MKTPGM,
TRE.EUMKT
FROM CRM.TREUP100R TRE
GROUP BY
TRE.GCUSNO,
UPPER(TRIM(TRE.DCUSNO)),
TRE.DNAME,
TRE.DADDR,
TRE.DCITY,
TRE.DSTATE,
TRE.DZIP,
TRE.DREGN,
TRE.DDIST,
TRE.DSLSMN,
TRE.DCHAIN,
TRE.MARKET,
TRE.MKTPGM,
TRE.EUMKT;

A slight correction to odie's post. I think you want min not max to replicate the Access first function, but see below to be sure. So:
min(upper(trim(tre.dname))) keep (dense_rank first order by tre.gcusno) as dname_std
user10860953 wrote:How does one ignore null values?The min and max functions will ignore nulls automatically, so if there is a null value in tre.dname, it will not be be returned, unless all of the values are null. For example:
SQL> WITH t AS (
2     SELECT 65 id, 'ABCD' col FROM dual UNION ALL
3     SELECT 37, 'DEFG' FROM dual UNION ALL
4     SELECT 65, 'DEFG' FROM dual UNION ALL
5     SELECT 65, null FROM dual UNION ALL
6     SELECT 70, null FROM dual UNION ALL
7     SELECT 70, null FROM dual UNION ALL
8     SELECT 37, 'ABC' from dual)
9 SELECT id,
10         MIN(col) keep (DENSE_RANK FIRST ORDER BY id) min_dname_std,
11         MAX(col) keep (DENSE_RANK FIRST ORDER BY id) max_dname_std
12 FROM t
13 GROUP BY id;
        ID MIN_ MAX_
        37 ABC DEFG
        65 ABCD DEFG
        70John

Some problems using some Matlab functions

Hello,
I have some trouble with MathScript when i want to use some MATLAB functions in it such as unique or histc. (i'm using windows 7 and LV2010 SP1)
These functions are theoretically supported by MathScript insofar as they exist in MathScript Documentation but they return an error. This error explains that my matrix sizes are invalid but when we are doing exactly the same process with the same matrix in MATLAB, it ends well.
So I checked the two MATLAB and MathScript documentations in order to see if there is a difference between the same functions. It is proving to be the same functionning in MathScript and in MATLAB so I am a little lost.
In order to show you a concrete example :
If we have a X matrix equals to (77 77; 88 96) and we are doing unique(X). The result is supposed to be (77 88 96) but mathscript returns an error.
On the other hand, if X is not a matrix but a vector, unique ends well but i'm not interested in using some vectors (because it is exactly the same kind of problem with some others functions using only matrix).
I could use a matlab node script but in this project, we would to avoid the use of a Matlab Licence.
Do you have some idea in order to fix this kind of problem
Thanks a lot

Hi,
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unique(X(:))
instead.

Mathscript all matlab functions are not working

Hello,
I am using mathscript node in my labview development. I have used right away "imfill" function to fill the holes in my edge detected image. But the "imfill" function is not working in mathscript.
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Attachments:
Candel.vi ‏96 KB

Did you take this code directly from MATLAB and put it in the MathScript node? (I'm guessing the imfill function is a MATLAB function?)
If so, you're going to be sorely dissapointed. While MATLAB and the MathScript node both use .m files, they are not the same language. The language is very similar, but the syntax differs slightly in some cases. My guess (since I've used MATLAB but never the imfill function) is that the imfill function is part of a toolkit for MATLAB. Unless the MathScript node has a corresponding function (you'd have to search the help to see) you will not be able to use this function in the MathScript node.
If the MathScript node has no corresponding function and you must use this function in LabVIEW, I would reccommend the MATLAB Script Node. This structure actually calls MATLAB through the ActiveX interface. This means that you must have MATLAB installed on the computer you are running your VI on.
Chris
Certified LabVIEW Architect
Certified TestStand Architect

Jintegra problem - accessing Matlab from Java??

Hi:
Sorry if this post doesn't belong here!!
I am accessing Matlab from JAVA using JIntegra for COM. I tried running the example in their website.
(http://j-integra.intrinsyc.com/support/com/doc/other_examples/Matlab.htm)
I have also posted the example below. I am using their trial version and have included all the jars as said. I get the an unexpected output (all zero's) for reading a variable in the matlab workspace. I don't understand why I get this. Can anyone let me know if this runs for you??
Thanks
Pavan
Example code from Jintegra website:
public class MatlabExample {
public static void main(java.lang.String[] args) throws Exception {
try {
// DCOM authentication: Make sure NT Domain, NT User, NT Password are valid credentials.
// Uncomment this line if MatlabExample.java remotely accesses MATLAB :
// com.linar.jintegra.AuthInfo.setDefault("NT DOMAIN", "NT USER", "NT PASSWORD");
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// Specify host name or IP address of MATLAB machine as parameter if
// MatlabExample.java remotely accesses MATLAB.
// mlapp.MLApp mlApp = new mlapp.MLApp("123.456.789.0");
mlapp.MLApp mlApp = new mlapp.MLApp();
String result = mlApp.execute("a = [1 2 3 4; 5 6 7 8;]");
System.out.println("Execute result is " + result);
double mreal[][] = new double[2][4];
double mimage[] = new double[0];
mlApp.getFullMatrix("a", "base", new Object[]{mreal}, new Object[]{mimage});
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 4; j++) {
System.out.println(mreal[i][j]);
} finally {
com.linar.jintegra.Cleaner.releaseAll();
}

......How are you declaring the class in your JSP? ... are you instantiating it as a bean using the useBean tag, or just instantiating it in your code like normal.
Maybe you could post the relevant JSP code too?
Hello again,
Only the last string is populating after the file has be tokenized. What I'll like to accomplish is passing the very first string in the file. I did not get too far in the JSP file setup because the code is still in it's testing stage, but any help will be highly appreciated.
Here is the JSP code
<%@page import="dev.*" %>
<%@page session="true" language="java" import="java.io.*" %>
<jsp:useBean id="wagerhist" scope="request" class="dev.RoundDetail2" />
<html>
<head>
<title>Round Detail</title>
<body>
<table width="530" bordercolor="#000000" valign="top">
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</table>
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How to use matlab function with labview?

Hello,
I just want to use some matlab functions like floor(),ones()... in my labview code, who can tell me how to do it?
I want to only install MCR in my PC, so MATLAB script node can not work because it need matlab installed.
Thanks
Solved!
Go to Solution.

floor() exists on the standard labview pallet already and the ones() function would be fairly simple to reproduce. If you only need a few basic functions repost asking for direction on recreating those specific methods. However, you're right - there is not a direct way to use compiled matlab code in labview without full matlab and the math script nodes. If you're really desparate to reuse some some exisiting IP there are C++ alternatives that implement many of the same methods and syntax as matlab (http://arma.sourceforge.net/faq.html). I'm fairly sure there are other tools that attempt to translate matlab code into pure c functions, both of which can be called via a DLL from within labview: https://decibel.ni.com/content/docs/DOC-9076
Alternatively, here is an all NI linear algebra solution: http://sine.ni.com/nips/cds/view/p/lang/en/nid/210525

How user define matlab function will work in labview

Hi all
iam trying to implenet the matlab function which i have wrote in Matlab 7.9(R2009b)
function [ op ] = myimplement( ip )
the file is attached below
i want to use matlab function in labview ,i have tried Matlab script node but few of function define in matlab function are not working properly
so is any alternative way to implement matlab function in labview environment to implement my algorithm & getting same results
thnaks
waiting for kind reply
iam trying from many days but not geting any results
Attachments:
myimplement.zip ‏2 KB

Hi smercurio_fc nd sry if u mind my double post actually iamin last month of my post graduate research so i want to complete it urgently
iam attaching detail file what iam facing?/
same thing iam doing in Matlab & getting result but while doing in Labview by using Matlab script node not getting
error 1048 is occured
iam attaching word file kindly help me out regarding that problem
i will be thankfull for u
tc
Attachments:
my matlab function.docx ‏134 KB
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Problems of integrating Matlab functions in Labview

Hi,
Does anyone know how to completely integrate Matlab functions into Labview program without a copy of Matlab in the system when I run the entire program?
Initially I used 'Mathscrip' node but I heard that it doesn't support Matlab toolbox. Thus, I tried out the other option 'Matlab script' node. This node works well in implementing Matlab functions but it indeed requires Matlab installed in the system.
So in other words, how could I realize the full integration(as what Matlab script node achieves.) without Matlab installed in the system?
Cheers,
Nicholas

hi smercurio,
So you mean that the Matlab script is no longer necessary in my case right?
Could I just ask my colleague to compile his codes to matlab dll and I use the Call Library Function Node instead of Matlab script to call it?
About MCR, is it the correct source at the following link http://www.mathworks.com/matlabcentral/fileexchange/5268 ?
Sorry for those basic queries in Matlab as I have very little experience in it. lol... thanks a lot.
Cheers,
Nicholas

Accessing Matlab functions

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