[Scilab-users] Question about javasci V2
Perrichon
perrichon.pierre at wanadoo.fr
Wed Feb 15 11:21:47 CET 2017
Hello Daniel,
Here is a basic program I’ve realized under netbeans 7.01
It works with scilab x64 windows 7 or 10, scilab 5.5.2 ; not with 6.0.0 b2
Also here are the libraries to incilude in your java project (eclipse if i well understood) :
org.scilab.modules.jvm.jar
org.scilab.modules.javasci.jar
org.scilab.modules.core.jar
org.scilab.modules.types.jar
JDK1.8
It works with jdk1.8.0_40
//----------------------------------------------------------------------------------------------------------------------------------------------------
// Java program and main program
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package testscilabv2;
import org.scilab.modules.javasci.Scilab;
import org.scilab.modules.types.ScilabType;
import org.scilab.modules.types.ScilabDouble;
/**
*
* @author pierre
*/
public class TestScilabV2 {
static boolean bgraph;
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
try {
Scilab sci = new Scilab(true);
if (sci.open()) {
/* Send a Scilab instruction */
sci.exec("foo = [ 2, 4, 6; 4, 0, 10; 6, 10, 12 ];");
/* Retrieve the variable foo */
ScilabType foo = sci.get("foo");
/* Display the variable */
System.out.println("Representation of : " + foo);
/* Get the data and retrieve the 2,2 value */
double[][] aReal = ((ScilabDouble)foo).getRealPart();
System.out.println("foo[1,1] = " + aReal[1][1]);
/* Change the value of 2,2 */
aReal[1][1] = Math.PI;
/* Create a new variable */
ScilabDouble bar = new ScilabDouble(aReal);
/* Send it to Scilab */
sci.put("bar", bar);
/* Display it through Scilab */
sci.exec("disp(bar)");
sci.exec("about();");
sci.exec("plot3d();");
System.out.println("\nFermer le grahique pour terminer le programme de test...");
do {
// Boucle tant que le graphique n'a pas été refermé
//-------------------------------------------------
bgraph=sci.isGraphicOpened();
sci.exec("aPPeScilabJavasciv2=1;");
}while (bgraph);
sci.close();
System.out.println("...Fin du programme de test");
} else {
System.out.println("Could not start Scilab ");
}
/* Can be improved by other exceptions: AlreadyRunningException,
* InitializationException, UndefinedVariableException,
* UnknownTypeException, etc
*/
} catch (org.scilab.modules.javasci.JavasciException e) {
System.err.println("An exception occurred: " + e.getLocalizedMessage());
}
}
}
De : Daniel Neutzler [mailto:daniel.neutzler at haw-hamburg.de]
Envoyé : lundi 13 février 2017 13:07
À : Perrichon <perrichon.pierre at wanadoo.fr>; 'Users mailing list for Scilab' <users at lists.scilab.org>
Objet : Re: [Scilab-users] Question about javasci V2
Hello Pierre,
thank you for your answer. It is nice to hear that my Problem is probably a Bug.
I'm not sure how to use your example. Which Libs do I need for it or may you have a simple example to use it?
I'm sorry, my Java knowlegde is restricted (Beginner).
Thank You for your Help,
Daniel Neutzler
Am 04.02.2017 um 19:29 schrieb Perrichon:
Hello Daniel
I’ve already met your problem one year ago, and for me it is really a bug.
I work with scilab x64 5.5.2, netbeans 7.01, on W7 or W10 platform.
I’ve sovled it in my application, so I’m just able to propose parts of code.
I’ve delay the 2 instructions Scilab sci = new Scilab(true) and if (sci.open()) {, by creating a ScilabManager class, … and a thread class named Idle
Part of ScilabManager (also note the public static void OpenScilab())
public class ScilabManager {
public static Scilab sci; //Driver Scilab
public static boolean bScilabOpen;
public static boolean InitScilab;
public static Fifo FifoScilab;
private static TListeFifo SciJob;
static ScilabError TErrorScilab;
public static File ScilabFile;
private static int dim = 500;
public static String [] Script;
private static int iScript;
public static Configuration AppConfiguration;
public static Log LogScilab;
public static int NumGraph=0;
ScilabManager() {
try {
sci = new Scilab(true);
InitScilab=true;
} catch (JavasciException.InitializationException ex) {
Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);
}
}
@SuppressWarnings("CallToThreadDumpStack")
public static void OpenScilab() {
try {
bScilabOpen=sci.open();
} catch (JavasciException ex) {
ex.printStackTrace();
}
if (bScilabOpen) System.out.println("\nScilab est ouvert\n");
else System.out.println("\nErreur ouverture Scilab\n");
ScilabError.ClearScilabError();
try {
// Initialisation et chargements des fonctions Scilab
//---------------------------------------------------
AppConfiguration = new Configuration();
} catch (FileNotFoundException ex) {
Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);
} catch (JavasciException ex) {
Logger.getLogger(ScilabManager.class.getName()).log(Level.SEVERE, null, ex);
}
try {
// Initialisation du fichier de log out (Traces commandes Scilab)
//--------------------------------------------------------------
LogScilab = new Log();
OptsimView.SetLogFile();
} catch (FileNotFoundException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
Script = new String[dim];
Now note part of Idle task :
public class Idle extends Thread {
protected volatile boolean IdleRunning = true;
public static boolean bCloseIdle=false;
private static int Count=1;
private static int setGraphe=0;
private static JTextField TF=null;
private static Timer bTimer;
private static JLabel AnimationLabel;
private static Icon idleicone;
private int ThreadNumber;
Idle (JTextField TFi, Timer busyIconTimer,
JLabel statusAnimationLabel, Icon icone) {
TF=TFi;
bTimer=busyIconTimer;
AnimationLabel=statusAnimationLabel;
idleicone=icone;
this.ThreadNumber=Count++;
}
@Override
public synchronized void run() {
boolean bTest;
if (ScilabManager.InitScilab) {
ScilabManager.OpenScilab();
}
ScilabManager.sci.exec("aPPeScilabJavasciv2=1;");
while (IdleRunning) { …etc
So instructions Scilab sci = new Scilab(true) and if (sci.open are delayed.
This is the only solution I’ve found. After that Scilab well run with Java netbeans and javasci2.
Also well note that my program doesn’t work with Scilab 6.0.0 b2 at compile time and see :
http://bugzilla.scilab.org/show_bug.cgi?id=14626
Hope it helps you
Sincerely
Pierre
De : users [mailto:users-bounces at lists.scilab.org] De la part de Daniel Neutzler
Envoyé : mardi 31 janvier 2017 13:15
À : users at lists.scilab.org <mailto:users at lists.scilab.org>
Objet : [Scilab-users] Question about javasci V2
Hi, I am using Scilab 5.5.2 and trying to open a Scilab script from
Java. Therfore I followed the documentation: Compute and run with javasci v2.
I use Eclipse to compile and run. It works, but I want now to open it in "advanced mode" to get grahpics
(Scilab sci = new Scilab(true);). If i do it, I get a compile Error. What's wrong ?
Code and Error Plot out see below.
Thank You for your Help,
Daniel Neutzler
####Error####
java.lang.ExceptionInInitializerError
at org.scilab.modules.commons.xml.XConfiguration.<clinit>(Unknown Source)
at org.scilab.modules.core.Scilab.<clinit>(Unknown Source)
at org.scilab.modules.javasci.Call_ScilabJNI.Call_ScilabOpen(Native Method)
at org.scilab.modules.javasci.Call_Scilab.Call_ScilabOpen(Unknown Source)
at org.scilab.modules.javasci.Scilab.open(Unknown Source)
at StartUp.main.main(main.java:17)
Caused by: java.lang.NullPointerException
at java.io.File.<init>(Unknown Source)
at org.scilab.modules.commons.ScilabConstants.<clinit>(Unknown Source)
... 6 more
Exception in thread "main"
#### JAVA Code####
package StartUp;
import org.scilab.modules.javasci.Scilab;
import org.scilab.modules.types.ScilabType;
import java.io.File;
import java.io.FileNotFoundException;
public class main {
public static void main(String[] args) throws FileNotFoundException{
System.out.println("Starte Programm Pin-Positionsanalyse-Tool V1.0...");
try {
Scilab sci = new Scilab(true); // Starts in advanced mode
if (sci.open()) {
sci.execException(new File("C:/Users/Daniel/Desktop/test.sce"));
sci.close();
} else {
System.out.println("Could not start Scilab ");
}
/* Can be improved by other exceptions: AlreadyRunningException,
* InitializationException, UndefinedVariableException,
* UnknownTypeException, etc
*/
} catch (org.scilab.modules.javasci.JavasciException e) {
System.err.println("An exception occurred: " + e.getLocalizedMessage());
}
}
}
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