Public Member Functions
	VisumMatrixWriter (final Matrix matrix)

void	setIds (final Set< String > ids)

void	writeFile (final String filename)

Detailed Description

Author: mrieser

Writes a single matrix in a VISUM-compatible format to file. Can be used e.g. for OD-matrices.

Definition at line 40 of file VisumMatrixWriter.java.

Constructor & Destructor Documentation

◆ VisumMatrixWriter()

org.matsim.visum.VisumMatrixWriter.VisumMatrixWriter ( final Matrix matrix )

Definition at line 47 of file VisumMatrixWriter.java.

References org.matsim.matrices.Matrix.getFromLocations(), and org.matsim.matrices.Matrix.getToLocations().

                                                   {
         super();
         this.matrix = matrix;
         this.ids = new TreeSet<>();
         this.ids.addAll(matrix.getFromLocations().keySet());
         this.ids.addAll(matrix.getToLocations().keySet());
     }

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Member Function Documentation

◆ setIds()

void org.matsim.visum.VisumMatrixWriter.setIds ( final Set< String > ids )

Parameters

ids	Set of ids to use as row- and column-header in the matrix

sets the row- and column-header used when writing the matrix. If the ids are not set explicitly, the ids in the matrix are used.
useful, if the matrix is sparse and not all possible rows and columns contain values, but should still be written out in the matrix containing only zeros.

Definition at line 64 of file VisumMatrixWriter.java.

                                               {
         this.ids = ids;
     }

◆ writeFile()

void org.matsim.visum.VisumMatrixWriter.writeFile ( final String filename )

Definition at line 68 of file VisumMatrixWriter.java.

References org.matsim.matrices.Matrix.getEntry(), and org.matsim.matrices.Entry.getValue().

                                                  {
 
         try (BufferedWriter out = new BufferedWriter(new FileWriter(filename))) {
             out.write("$VN;Y5\n");
             out.write("*\n");
             out.write("*\tAnzahl Bezirke\n");
             out.write(this.ids.size() + "\n");
 
             out.write("*\tBezirksNummern\n");
             int cnt = 0;
             for (String value : this.ids) {
                 cnt++;
                 if (cnt > 1) {
                     out.write("\t");
                 }
                 out.write(value);
             }
             out.write("\n");
 
             for (String from : this.ids) {
                 out.write("*\t" + from + "\n");
                 cnt = 0;
                 for (String to : this.ids) {
                     cnt++;
                     Entry e = this.matrix.getEntry(from, to);
                     if (cnt > 1) {
                         out.write("\t");
                     }
                     if (e == null) {
                         out.write("0");
                     } else {
                         out.write(Double.toString(e.getValue()));
                     }
                 }
                 out.write("\n");
             }
 
             out.write("\n");
 
         } catch (IOException e) {
             e.printStackTrace();
         }
     }