Quote

BTW, is there any chance to include some other (free) symbolic engines into SMath?

Joel Moses. Symbolic Integration. AI Memo 97, Artificial Intelligence Project, MAC-M-310, Project MAC, Massachusetts Institute of Technology, June 10, 1966, 17 pages.

Joel Moses. Symbolic Integration II. AI Memo 97a, Artificial Intelligence Project, MAC-M-327, Project MAC, Massachusetts Institute of Technology, October 13, 1966, 12 pages.

Quote

If I understood you well, your intention is to improve the SMath own symbolic engine.

Wrote

Please, Uni or Omorr, could you translate the text on the image on first post?

Thanks a lot

oscampo

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        // Вычисления на уровне термов
        static public bool ExpressionEvaluation( Term root, Term[][] args, ref Store context, ref Term[] result ) {
            
            // Application path and command line arguments
            string ApplicationPath = Path.GetDirectoryName( System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName )
                + "\\plugins\\mapledos.exe";

            string InFile = Path.GetTempFileName();
            string OutFile = Path.GetTempFileName();
            
            string ApplicationArguments = InFile;
            
            MItem expression = SMath.Math.Symbolic.Converter.ToMItem(args[0]);

            SMath.Math.Symbolic.Expansion.Prepare( ref expression );
            
            SMath.Math.Symbolic.Expression.SimplifyEx( expression, context );
            
            string Expr = SMath.Math.Symbolic.Converter.ToString( expression );

            StreamWriter sw = File.CreateText( InFile );
            
            // From long to shot name
            StringBuilder shortPath = new StringBuilder(255);

            GetShortPathName( OutFile, shortPath, shortPath.Capacity );
            
            sw.WriteLine( "interface(quiet=true);" );
            sw.WriteLine( "writeto(`" + shortPath.ToString().Replace( "\\", "\\\\" ) + "`):" );
            sw.WriteLine( "convert(" + Expr.Replace( ",", "." ).Replace( ";", "," ).Replace( "{", "(" ).Replace( "}", "" ).Replace( '\u2261', '=' ).Replace( '"', '`' ) 
                + ",string);" );
            sw.WriteLine( "quit:" );
            
            sw.Close();
            
            // Create a new process object
            Process ProcessObj = new Process();
            
            // StartInfo contains the startup information of
            // the new process
            ProcessObj.StartInfo.FileName = ApplicationPath;
            ProcessObj.StartInfo.Arguments = ApplicationArguments;

            ProcessObj.StartInfo.WorkingDirectory = Path.GetDirectoryName( System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName )
                + "\\plugins";

            // These two optional flags ensure that no DOS window
            // appears
            ProcessObj.StartInfo.UseShellExecute = false;
            ProcessObj.StartInfo.CreateNoWindow = true;

            // If this option is set the DOS window appears again :-/
            // ProcessObj.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

            // This ensures that you get the output from the DOS application
            ProcessObj.StartInfo.RedirectStandardOutput = true;
            ProcessObj.StartInfo.RedirectStandardInput = true;

            // Start the process
            ProcessObj.Start();

            // Wait that the process exits
            ProcessObj.WaitForExit();

            if ( File.Exists( InFile ) ) { File.Delete( InFile ); }

            StreamReader sr = new StreamReader( OutFile );

            string OutStr = sr.ReadToEnd().Trim().Replace( ",", ";" ).Replace( ".", "," ).Replace( '`', '"' );
            
            sr.Close();
            
            result = SMath.Math.Symbolic.Converter.ToMItem( OutStr ).ToTerms();
            
            if ( File.Exists( OutFile ) ) { File.Delete( OutFile ); }
            
            return true;
        }

Wrote

I have forgotten that separators can be different. As you see I use other adjustments ("," and ";" instead of "." and "," like on your example). Number PI isn't supported yet, it is necessary to write so: Pi (maple notation).

Wrote

Quote

If I understood you well, your intention is to improve the SMath own symbolic engine.

Yes, that's right.

Wrote

Radovan, I think that there is a possibility to connect any mathematical package (like Maple, Matlab, Mathematica...), but they should be installed in system. If you have Matlab (for example, with size of 1-10 Gb ), why you need SMath Studio in this case?

Wrote

It is possible to be connected to free packages (AlgLib, ...), but only without fanaticism. Otherwise SMath Studio will lose the status of the mathematical program, and will be only the interface with plug-ins to mathematical engines. That's why I am careful in this question.

Wrote

Hi uni. Can you upload again the maple plugin? File was deleted from cd.ru. Thanks.

Wrote

Please, Uni or Omorr, could you translate the text on the image on first post?

Thanks a lot

oscampo

Wrote

Hello uni

Wrote

Please, Uni or Omorr, could you translate the text on the image on first post?

Thanks a lot

oscampo

Thank you for your efforts on this but, unfortunately, there is no way for me to understand how is this working and how should this plugin be used .

Regards,
Radovan