Excel file reader using Microsoft Jet Database Engine.

This class requires the Microsoft Access Database Engine to work. The download is available from Microsoft under the name "Microsoft Access Database Engine 2010 Redistributable", available in both 32-bit (x86) and 64-bit (x64) versions.

By default, the redistributable package will only install if it is the same as the current version of Microsoft Office installed in the machine (i.e. ACE 32-bit can not be installed with 64-bit office and vice-versa). To overcome this limitation and install both versions of the ACE drivers, specify /passive as a command line argument when installing the packages.

Пример #1
0
        private static void testData1(ExcelReader withHeader, ExcelReader sansHeader)
        {
            var sheets1 = withHeader.GetWorksheetList();
            var sheets2 = sansHeader.GetWorksheetList();

            Assert.AreEqual(1, sheets1.Length);
            Assert.AreEqual(1, sheets2.Length);

            Assert.AreEqual("testnormal", sheets1[0]);
            Assert.AreEqual("testnormal", sheets2[0]);

            var dataWithHeader = withHeader.GetWorksheet("testnormal");
            var dataSansHeader = sansHeader.GetWorksheet("testnormal");

            Assert.AreEqual(119, dataWithHeader.Rows.Count);
            Assert.AreEqual(17, dataWithHeader.Columns.Count);

            Assert.AreEqual(120, dataSansHeader.Rows.Count);
            Assert.AreEqual(17, dataSansHeader.Columns.Count);

            var firstRowWithHeader = dataWithHeader.Rows[0].ItemArray;
            Assert.AreEqual("90", firstRowWithHeader[0]);
            Assert.AreEqual("0", firstRowWithHeader[1]);
            Assert.AreEqual("0", firstRowWithHeader[2]);
            Assert.AreEqual("0", firstRowWithHeader[3]);
            Assert.AreEqual("0", firstRowWithHeader[4]);

            var firstRowSansHeader = dataSansHeader.Rows[0].ItemArray;
            Assert.AreEqual("1", firstRowSansHeader[0]);
            Assert.AreEqual("2", firstRowSansHeader[1]);
            Assert.AreEqual("3", firstRowSansHeader[2]);
            Assert.AreEqual("4", firstRowSansHeader[3]);
            Assert.AreEqual("5", firstRowSansHeader[4]);
        }
Пример #2
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        public void ExcelReaderConstructorTest()
        {
            string path = @"..\..\..\..\Unit Tests\Accord.Tests.Statistics\Resources\sample.xls";

            // Create a new reader, opening a given path
            ExcelReader reader = new ExcelReader(path);

            // Afterwards, we can query the file for all
            // worksheets within the specified workbook:
            string[] sheets = reader.GetWorksheetList();

            // Finally, we can request an specific sheet:
            DataTable table = reader.GetWorksheet(sheets[1]);

            // Now, we have loaded the Excel file into a DataTable. We
            // can go further and transform it into a matrix to start
            // running other algorithms on it: 

            double[,] matrix = table.ToMatrix();

            // We can also do it retrieving the name for each column:
            string[] columnNames; matrix = table.ToMatrix(out columnNames);

            // Or we can extract specific columns into single arrays:
            double[] column = table.Columns[0].ToArray();

            // PS: you might need to import the Accord.Math namespace in
            //   order to be able to call the ToMatrix extension methods. 

            Assert.AreEqual(6, matrix.Length);
            Assert.AreEqual(3, columnNames.Length);
            Assert.AreEqual(2, column.Length);
        }
Пример #3
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        private void MenuFileOpen_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog(this) == DialogResult.OK)
            {
                string filename = openFileDialog.FileName;
                string extension = Path.GetExtension(filename);
                if (extension == ".xls" || extension == ".xlsx")
                {
                    ExcelReader db = new ExcelReader(filename, true, false);
                    TableSelectDialog t = new TableSelectDialog(db.GetWorksheetList());

                    if (t.ShowDialog(this) == DialogResult.OK)
                    {
                        this.sourceTable = db.GetWorksheet(t.Selection);
                        this.dgvAnalysisSource.DataSource = sourceTable;

                        this.cbTimeName.Items.Clear();
                        this.cbEventName.Items.Clear();
                        this.checkedListBox1.Items.Clear();
                        foreach (DataColumn col in sourceTable.Columns)
                        {
                            this.cbTimeName.Items.Add(col.ColumnName);
                            this.cbEventName.Items.Add(col.ColumnName);
                            this.checkedListBox1.Items.Add(col.ColumnName);
                        }

                        this.cbTimeName.SelectedIndex = 0;
                    }
                }
            }
        }
Пример #4
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        static void Main(string[] args)
        {
            // Read the Excel worksheet into a DataTable
            DataTable table = new ExcelReader("examples.xls").GetWorksheet("Sheet1");

            // Convert the DataTable to input and output vectors
            double[][] inputs = table.ToArray<double>("X", "Y");
            int[] outputs = table.Columns["G"].ToArray<int>();

            // Plot the data
            ScatterplotBox.Show("Yin-Yang", inputs, outputs).Hold();

            naiveBayes(inputs, outputs);

            decisionTree(inputs, outputs);

            linearSvm(inputs, outputs);

            kernelSvm(inputs, outputs);

            logistic(inputs, outputs);

            network(inputs, outputs);

            multilabelsvm();

            sequenceclassification();

            resilientgradienthiddenlearning();
        }
Пример #5
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        public void TestExcel12_Data1()
        {
            string path = Path.Combine("Resources", "excel", "data1.xlsx");

            ExcelReader withHeader = new ExcelReader(path, true);
            ExcelReader sansHeader = new ExcelReader(path, false);

            testData1(withHeader, sansHeader);
        }
Пример #6
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        static void Main(string[] args)
        {
            DataTable tableAttHp= new ExcelReader("HsAttHp.xlsx").GetWorksheet("Sheet1");
            double[][] tableAttHpMatrix = tableAttHp.ToArray<double>();

            DataTable tableCost = new ExcelReader("HsCost.xlsx").GetWorksheet("Sheet1");
            double[] tableCostMatrix = tableCost.Columns[0].ToArray<double>();

            //double[,] scores = Accord.Statistics.Tools.ZScores(tableAttHpMatrix);

            //double[,] centered = Accord.Statistics.Tools.Center(tableAttHpMatrix);

            //double[,] standard = Accord.Statistics.Tools.Standardize(tableAttHpMatrix);

            //foreach (double i  in scores ) { Console.WriteLine(i); }
            //Console.ReadKey();
            //foreach (double i in centered) { Console.WriteLine(i); }
            //Console.ReadKey();
            //foreach (double i in standard) { Console.WriteLine(i); }

            // Plot the data
            //ScatterplotBox.Show("Hs", tableAttHpMatrix, tableCostMatrix).Hold();

            var target = new MultipleLinearRegression(2, true);

            double error = target.Regress(tableAttHpMatrix, tableCostMatrix);

            double a = target.Coefficients[0]; // a = 0
            double b = target.Coefficients[1]; // b = 0
            double c = target.Coefficients[2]; // c = 1
            

            Console.WriteLine(a + " " + b + " " + c);
            Console.ReadKey();

            double[] inputs = { 2005, 2006, 2007, 2008, 2009,2010,2011 };
            double[] outputs = { 12,19,29,37,45,23,33 };

            // Create a new simple linear regression
            SimpleLinearRegression regression = new SimpleLinearRegression();

            // Compute the linear regression
            regression.Regress(inputs, outputs);

            // Compute the output for a given input. The
            double y = regression.Compute(85); // The answer will be 28.088

            // We can also extract the slope and the intercept term
            // for the line. Those will be -0.26 and 50.5, respectively.
            double s = regression.Slope;
            double cut = regression.Intercept;

            Console.WriteLine(s+"x+"+ cut);

            Console.ReadKey();
        }
Пример #7
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        public void ConstructorExcel8Test()
        {
            string path = @"..\..\..\..\Unit Tests\Accord.Tests.Statistics\Resources\sample.xls";
            ExcelReader target = new ExcelReader(path);

            testWorksheets(target);

            testColumns(target, false);

            testTables(target);
        }
 public ExcelFileWrapper(string filePath, bool hasHeaders = true,
     bool hasMixedData = false)
 {
     string ext = Path.GetExtension(filePath);
     if (!ext.Equals(".xls", StringComparison.OrdinalIgnoreCase)
         && !ext.Equals(".xlsx", StringComparison.OrdinalIgnoreCase))
     {
         throw new ArgumentException(Lib.ExcelFileExpected, "filePath");
     }
     this.filePath = filePath;
     excelReader = new ExcelReader(filePath, hasHeaders, hasMixedData);
     worksheetNamesCached = excelReader.GetWorksheetList();
 }
 private void btnInputFileBrowse_Click(object sender, System.EventArgs e)
 {
     if (ofdInput.ShowDialog() == DialogResult.OK)
     {
         tbInputFile.Text = ofdInput.FileName;
         SupportedInputFileFormat? supportedInputFileFormat;
         if (Project.TryGetSupportedInputFileFormat(Path.GetExtension(ofdInput.FileName),
             out supportedInputFileFormat))
         {
             switch (supportedInputFileFormat)
             {
                 case SupportedInputFileFormat.Excel2003:
                 case SupportedInputFileFormat.Excel2007:
                     excelReader = new ExcelReader(ofdInput.FileName);
                     cbSheets.DataSource = new ExcelReader(ofdInput.FileName).GetWorksheetList();
                     SetEnabledState(FormEnabledState.ExcelPicked);
                     break;
                 case SupportedInputFileFormat.XML:
                     XmlData = new DataTable();
                     XmlData.ReadXml(ofdInput.FileName);
                     SetEnabledState(FormEnabledState.XmlPicked);
                     break;
             }
         }
     }
 }
Пример #10
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        public void ConstructorExcel10Test()
        {
            // If a 64-bit ACE is installed, this test requires a 64-bit process to run correctly.
            string path = Path.Combine("Resources", "sample.xlsx");
            ExcelReader target = new ExcelReader(path);

            testWorksheets(target);

            testColumns(target, true);

            testTables(target);
        }
Пример #11
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        public void SpreadsheetNames_Success()
        {
            string path = Path.Combine("Resources", "excel", "spreadsheet_names.xls");

            // Create a new reader, opening a given path
            ExcelReader reader = new ExcelReader(path);

            string[] sheets = reader.GetWorksheetList();

            Assert.AreEqual(4, sheets.Length);
            Assert.AreEqual("Example 1", sheets[0]);
            Assert.AreEqual("Example 2", sheets[1]);
            Assert.AreEqual("Example 3", sheets[2]);
            Assert.AreEqual("References", sheets[3]);

            // Finally, we can request an specific sheet:
            DataTable table = reader.GetWorksheet(sheets[1]);

            Assert.AreEqual(2, table.Columns.Count);
            Assert.AreEqual(42, table.Rows.Count);
        }
Пример #12
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        private static void testColumns(ExcelReader target, bool xlsx)
        {
            string[] cols = target.GetColumnsList("Plan1");
            Assert.AreEqual(3, cols.Length);
            Assert.AreEqual("Header1", cols[0]);
            Assert.AreEqual("Header2", cols[1]);
            Assert.AreEqual("Header3", cols[2]);

            cols = target.GetColumnsList("Plan2");
            Assert.AreEqual(3, cols.Length);
            if (target.Provider == "Microsoft.Jet.OLEDB.4.0")
            {
                Assert.AreEqual("F1", cols[0]);
                Assert.AreEqual("F2", cols[1]);
                Assert.AreEqual("F3", cols[2]);
            }
            else
            {
                Assert.AreEqual("1", cols[0]);
                Assert.AreEqual("2", cols[1]);
                Assert.AreEqual("3", cols[2]);
            }

            cols = target.GetColumnsList("Plan3");
            Assert.AreEqual(2, cols.Length);
            Assert.AreEqual("A", cols[0]);
            Assert.AreEqual("B", cols[1]);

            cols = target.GetColumnsList("Sheet1");
            Assert.AreEqual(1, cols.Length);
            Assert.AreEqual("F1", cols[0]);
        }
        public void MixtureWeightsFitTest2()
        {
            MemoryStream stream = new MemoryStream(Resources.CircleWithWeights);

            ExcelReader reader = new ExcelReader(stream, xlsx: false);

            DataTable table = reader.GetWorksheet("Sheet1");

            double[,] matrix = table.ToMatrix();

            double[][] points = matrix.Submatrix(null, 0, 1).ToArray();
            double[] weights = matrix.GetColumn(2);

            // Randomly initialize some mixture components
            MultivariateNormalDistribution[] components = new MultivariateNormalDistribution[2];
            components[0] = new MultivariateNormalDistribution(new double[] { 0, 1 }, Matrix.Identity(2));
            components[1] = new MultivariateNormalDistribution(new double[] { 1, 0 }, Matrix.Identity(2));

            // Create an initial mixture
            var mixture = new MultivariateMixture<MultivariateNormalDistribution>(components);

            mixture.Fit(points, weights);

            // Our model will be:
            double mean00 = mixture.Components[0].Mean[0];
            double mean01 = mixture.Components[0].Mean[1];
            double mean10 = mixture.Components[1].Mean[0];
            double mean11 = mixture.Components[1].Mean[1];

            Assert.AreEqual(-0.11704994950834195, mean00, 1e-10);
            Assert.AreEqual(0.11603470123007256, mean01, 1e-10);
            Assert.AreEqual(0.11814483652855159, mean10, 1e-10);
            Assert.AreEqual(-0.12029275652994373, mean11, 1e-10);
        }
        public void GaussianMixtureModelTest5()
        {
            Accord.Math.Tools.SetupGenerator(0);

            MemoryStream stream = new MemoryStream(Resources.CircleWithWeights);
            ExcelReader reader = new ExcelReader(stream, xlsx: false);

            DataTable table = reader.GetWorksheet("Sheet1");

            double[,] matrix = table.ToMatrix();

            double[][] points = matrix.Submatrix(null, 0, 1).ToArray();
            double[] weights = matrix.GetColumn(2);

            GaussianMixtureModel gmm = new GaussianMixtureModel(2);

            gmm.Compute(points, new GaussianMixtureModelOptions()
            {
                Weights = weights
            });

            int a = 0;
            int b = 1;

            if ((-0.010550720353814949).IsRelativelyEqual(gmm.Gaussians[1].Mean[0], 1e-4))
            {
                a = 1;
                b = 0;
            }

            Assert.AreEqual(-0.010550720353814949, gmm.Gaussians[a].Mean[0], 1e-4);
            Assert.AreEqual(0.40799698773355553, gmm.Gaussians[a].Mean[1], 1e-3);

            Assert.AreEqual(0.011896812071918696, gmm.Gaussians[b].Mean[0], 1e-4);
            Assert.AreEqual(-0.40400708592859663, gmm.Gaussians[b].Mean[1], 1e-4);

            Assert.AreEqual(1, gmm.Gaussians[0].Proportion + gmm.Gaussians[1].Proportion, 1e-15);

            Assert.IsFalse(gmm.Gaussians[0].Mean.HasNaN());
            Assert.IsFalse(gmm.Gaussians[1].Mean.HasNaN());
        }
Пример #15
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        public static DataTable Load(Stream stream, TableFormat format)
        {
            switch (format)
            {
                case TableFormat.SerializedXml:
                    {
                        XmlSerializer serializer = new XmlSerializer(typeof(DataTable));
                        return (DataTable)serializer.Deserialize(stream);
                    }

                case TableFormat.SerializedBin:
                    {
                        BinaryFormatter serializer = new BinaryFormatter();
                        return (DataTable)serializer.Deserialize(stream);
                    }

                case TableFormat.OctaveMatFile:
                    {
                        MatReader reader = new MatReader(stream);
                        return reader.Fields.First().Value.GetValue<double[,]>().ToTable();
                    }

                case TableFormat.OpenDocument:
                    {
                        ExcelReader reader = new ExcelReader(stream, true);
                        string ws = reader.GetWorksheetList().First();
                        return reader.GetWorksheet(ws);
                    }

                case TableFormat.OlderExcel:
                    {
                        ExcelReader reader = new ExcelReader(stream, false);
                        string ws = reader.GetWorksheetList().First();
                        return reader.GetWorksheet(ws);
                    }

                case TableFormat.Csv:
                    {
                        CsvReader reader = new CsvReader(stream, true);
                        return reader.ToTable();
                    }

                case TableFormat.Tsv:
                    {
                        CsvReader reader = new CsvReader(stream, true, '\t');
                        return reader.ToTable();
                    }

                case TableFormat.LibSVM:
                    {
                        SparseReader reader = new SparseReader(stream);
                        return reader.ToTable();
                    }

                case TableFormat.Idx:
                    {
                        IdxReader reader = new IdxReader(stream);
                        return reader.ReadToEndAsVectors().ToTable();
                    }

                case TableFormat.CSharp:
                    throw new NotSupportedException();
            }
        }
        public void RevertTest3()
        {

            string path = @"..\..\..\..\Unit Tests\Accord.Tests.Statistics\Resources\examples.xls";

            // Create a new reader, opening a given path
            ExcelReader reader = new ExcelReader(path);

            // Afterwards, we can query the file for all
            // worksheets within the specified workbook:
            string[] sheets = reader.GetWorksheetList();

            // Finally, we can request an specific sheet:
            DataTable table = reader.GetWorksheet("Wikipedia");

            // Now, we have loaded the Excel file into a DataTable. We
            // can go further and transform it into a matrix to start
            // running other algorithms on it: 

            double[,] matrix = table.ToMatrix();

            IKernel kernel = new Polynomial(2);

            // Create analysis
            KernelPrincipalComponentAnalysis target = new KernelPrincipalComponentAnalysis(matrix,
                kernel, AnalysisMethod.Center, centerInFeatureSpace: true);

            target.Compute();

            double[,] forward = target.Result;

            double[,] reversion = target.Revert(forward);

            Assert.IsTrue(!reversion.HasNaN());
        }
        public void RevertTest2_new_method()
        {
            string path = @"Resources\examples.xls";

            // Create a new reader, opening a given path
            ExcelReader reader = new ExcelReader(path);

            // Afterwards, we can query the file for all
            // worksheets within the specified workbook:
            string[] sheets = reader.GetWorksheetList();

            // Finally, we can request an specific sheet:
            DataTable table = reader.GetWorksheet("Wikipedia");

            // Now, we have loaded the Excel file into a DataTable. We
            // can go further and transform it into a matrix to start
            // running other algorithms on it: 

            double[][] matrix = table.ToArray();

            IKernel kernel = new Gaussian(5);

            // Create analysis
            var target = new KernelPrincipalComponentAnalysis(kernel)
            { 
                Method = PrincipalComponentMethod.Center, 
                Center = true // Center in feature space
            };

            var regression  = target.Learn(matrix);

            double[][] forward = regression.Transform(matrix);

            double[][] reversion = target.Revert(forward);

            Assert.IsTrue(!reversion.HasNaN());
        }
 /// <summary>
 ///   Reads the specified file or stream into a table.
 /// </summary>
 /// 
 public DataTable Read(Stream stream)
 {
     ExcelReader reader = new ExcelReader(stream, true, true);
     return reader.GetWorksheet(0);
 }
Пример #19
0
        public void ConstructorExcel10Test()
        {
            // If a 64-bit ACE is installed, this test requires a 64-bit process to run correctly.
            string path = @"..\..\..\Accord.Tests\Accord.Tests.Statistics\Resources\sample.xlsx";
            ExcelReader target = new ExcelReader(path);

            testWorksheets(target);

            testColumns(target, true);

            testTables(target);
        }
Пример #20
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        private void MenuFileOpen_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog(this) == DialogResult.OK)
            {
                string filename = openFileDialog.FileName;
                string extension = Path.GetExtension(filename);
                if (extension == ".xls" || extension == ".xlsx")
                {
                    ExcelReader db = new ExcelReader(filename, true, false);
                    TableSelectDialog t = new TableSelectDialog(db.GetWorksheetList());

                    if (t.ShowDialog(this) == DialogResult.OK)
                    {
                        this.sourceTable = db.GetWorksheet(t.Selection);
                        this.dgvSource.DataSource = sourceTable;
                    }
                }
                else if (extension == ".xml")
                {
                    DataTable dataTableAnalysisSource = new DataTable();
                    dataTableAnalysisSource.ReadXml(openFileDialog.FileName);

                    this.sourceTable = dataTableAnalysisSource;
                    this.dgvSource.DataSource = sourceTable;
                }
            }
        }
Пример #21
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        public void ExcelReaderConstructorTest()
        {
            string path = Path.Combine("Resources", "sample.xls");

            // Create a new reader, opening a given path
            ExcelReader reader = new ExcelReader(path);

            // Afterwards, we can query the file for all
            // worksheets within the specified workbook:
            string[] sheets = reader.GetWorksheetList();

            // Finally, we can request an specific sheet:
            DataTable table = reader.GetWorksheet(sheets[1]);

            // Now, we have loaded the Excel file into a DataTable. We
            // can go further and transform it into a matrix to start
            // running other algorithms on it: 

            Assert.AreEqual(4, sheets.Length);
            Assert.AreEqual("Plan1", sheets[0]);
            Assert.AreEqual("Plan2", sheets[1]);
            Assert.AreEqual("Plan3", sheets[2]);
            Assert.AreEqual("Sheet1", sheets[3]);
            Assert.AreEqual(3, table.Columns.Count);
            Assert.AreEqual(2, table.Rows.Count);
        }
Пример #22
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        private void MenuFileOpen_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog(this) == DialogResult.OK)
            {
                string filename = openFileDialog.FileName;
                string extension = Path.GetExtension(filename);
                if (extension == ".xls" || extension == ".xlsx")
                {
                    ExcelReader db = new ExcelReader(filename, true, false);
                    TableSelectDialog t = new TableSelectDialog(db.GetWorksheetList());

                    if (t.ShowDialog(this) == DialogResult.OK)
                    {
                        DataTable tableSource = db.GetWorksheet(t.Selection);

                        double[,] sourceMatrix = tableSource.ToMatrix(out columnNames);

                        // Detect the kind of problem loaded.
                        if (sourceMatrix.GetLength(1) == 2)
                        {
                            MessageBox.Show("Missing class column.");
                        }
                        else
                        {
                            this.dgvLearningSource.DataSource = tableSource;
                            this.dgvTestingSource.DataSource = tableSource.Copy();


                            CreateScatterplot(graphInput, sourceMatrix);
                        }
                    }
                }
            }

            lbStatus.Text = "Switch to the Machine Creation tab to create a learning machine!";
        }
Пример #23
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        public void ConstructorExcel8Test()
        {
            string path = Path.Combine("Resources", "sample.xls");
            ExcelReader target = new ExcelReader(path);

            testWorksheets(target);

            testColumns(target, false);

            testTables(target);
        }
Пример #24
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        public void ApplyTest4()
        {
            string path = @"Resources\intrusion.xls";

            ExcelReader db = new ExcelReader(path, false, true);

            DataTable table = db.GetWorksheet("test");

            Codification codebook = new Codification(table);

            DataTable result = codebook.Apply(table);

            Assert.IsNotNull(result);

            foreach (DataColumn col in result.Columns)
                Assert.AreNotEqual(col.DataType, typeof(string));

            Assert.IsTrue(result.Rows.Count > 0);
        }
Пример #25
0
        public void ConstructorExcel10Test()
        {
            // If a 64-bit ACE is installed, this test requires a 64-bit process to run correctly.
            // You also need to configure the test runner to use x64 instead of x86:
            // https://msdn.microsoft.com/library/ee782531(VS.110).aspx
            string path = Path.Combine("Resources", "sample.xlsx");
            ExcelReader target = new ExcelReader(path);

            testWorksheets(target);

            testColumns(target, true);

            testTables(target);
        }
Пример #26
0
        private void MenuFileOpen_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog(this) == DialogResult.OK)
            {
                string filename = openFileDialog.FileName;
                string extension = Path.GetExtension(filename);
                if (extension == ".xls" || extension == ".xlsx")
                {
                    ExcelReader db = new ExcelReader(filename, true, false);
                    TableSelectDialog t = new TableSelectDialog(db.GetWorksheetList());

                    if (t.ShowDialog(this) == DialogResult.OK)
                    {
                        DataTable tableSource = db.GetWorksheet(t.Selection);

                        double[,] sourceMatrix = tableSource.ToMatrix(out sourceColumns);

                        // Detect the kind of problem loaded.
                        if (sourceMatrix.GetLength(1) == 2)
                        {
                            MessageBox.Show("Missing class column.");
                        }
                        else
                        {
                            this.dgvLearningSource.DataSource = tableSource;
                            this.dgvTestingSource.DataSource = tableSource.Copy();

                            CreateScatterplot(graphInput, sourceMatrix);

                            // enable "Start" button
                            startButton.Enabled = true;
                        }
                    }
                }
                else if (extension == ".csv")
                {
                    DataTable tableSource = CSVReader.ReadCSVFile(filename.Replace("\\", "//"), true);

                        double[,] sourceMatrix = tableSource.ToMatrix(out sourceColumns);

                        // Detect the kind of problem loaded.
                        if (sourceMatrix.GetLength(1) == 2)
                        {
                            MessageBox.Show("Missing class column.");
                        }
                        else
                        {
                            this.dgvLearningSource.DataSource = tableSource;
                            this.dgvTestingSource.DataSource = tableSource.Copy();

                            CreateScatterplot(graphInput, sourceMatrix);

                            // enable "Start" button
                            startButton.Enabled = true;
                        }

                }
            }
        }
Пример #27
0
 private static void testTables(ExcelReader target)
 {
     DataSet set = target.GetWorksheet();
     Assert.AreEqual(4, set.Tables.Count);
     Assert.AreEqual("Plan1", set.Tables[0].TableName);
     Assert.AreEqual("Plan2", set.Tables[1].TableName);
     Assert.AreEqual("Plan3", set.Tables[2].TableName);
     Assert.AreEqual("Sheet1", set.Tables[3].TableName);
 }
        public void GaussianMixtureModelTest5()
        {
            Accord.Math.Tools.SetupGenerator(0);

            MemoryStream stream = new MemoryStream(Resources.CircleWithWeights);
            ExcelReader reader = new ExcelReader(stream, xlsx: false);

            DataTable table = reader.GetWorksheet("Sheet1");

            double[,] matrix = table.ToMatrix();

            double[][] points = matrix.Submatrix(null, 0, 1).ToJagged();
            double[] weights = matrix.GetColumn(2);

            GaussianMixtureModel gmm = new GaussianMixtureModel(2);
            gmm.Initializations = 1;

            gmm.Compute(points, new GaussianMixtureModelOptions()
            {
                Weights = weights
            });

            int a = 0;
            int b = 1;
            double tol = 1e-3;

            if ((-0.407859903454185).IsRelativelyEqual(gmm.Gaussians[1].Mean[0], tol))
            {
                a = 1;
                b = 0;
            }

            Assert.AreEqual(-0.407859903454185, gmm.Gaussians[a].Mean[0], tol);
            Assert.AreEqual(-0.053911705279706859, gmm.Gaussians[a].Mean[1], tol);

            Assert.AreEqual(0.39380877640250328, gmm.Gaussians[b].Mean[0], tol);
            Assert.AreEqual(0.047186154880776772, gmm.Gaussians[b].Mean[1], tol);

            Assert.AreEqual(1, gmm.Gaussians[0].Proportion + gmm.Gaussians[1].Proportion, 1e-15);

            Assert.IsFalse(gmm.Gaussians[0].Mean.HasNaN());
            Assert.IsFalse(gmm.Gaussians[1].Mean.HasNaN());
        }
Пример #29
0
 private static void testWorksheets(ExcelReader target)
 {
     string[] list = target.GetWorksheetList();
     Assert.AreEqual(4, list.Length);
     Assert.AreEqual("Plan1", list[0]);
     Assert.AreEqual("Plan2", list[1]);
     Assert.AreEqual("Plan3", list[2]);
     Assert.AreEqual("Sheet1", list[3]);
 }