SampleApp.MainForm.btnTestingRun_Click C# (CSharp) Method

        private void btnTestingRun_Click(object sender, EventArgs e)
        {
            if (ann == null || dgvTestingSource.DataSource == null)
            {
                MessageBox.Show("Please create a machine first.");
                return;
            }


            // Creates a matrix from the source data table
            double[,] sourceMatrix = (dgvTestingSource.DataSource as DataTable).ToMatrix();


            // Extract inputs
            double[][] inputs = new double[sourceMatrix.GetLength(0)][];
            for (int i = 0; i < inputs.Length; i++)
                inputs[i] = new double[] { sourceMatrix[i, 0], sourceMatrix[i, 1] };

            // Get only the label outputs
            int[] expected = new int[sourceMatrix.GetLength(0)];
            for (int i = 0; i < expected.Length; i++)
                expected[i] = (int)sourceMatrix[i, 2];

            // Compute the machine outputs
            int[] output = new int[expected.Length];
            for (int i = 0; i < expected.Length; i++)
                output[i] = System.Math.Sign(ann.Compute(inputs[i])[0]);

            double[] expectedd = new double[expected.Length];
            double[] outputd = new double[expected.Length];
            for (int i = 0; i < expected.Length; i++)
            {
                expectedd[i] = expected[i];
                outputd[i] = output[i];
            }

            // Use confusion matrix to compute some statistics.
            ConfusionMatrix confusionMatrix = new ConfusionMatrix(output, expected, 1, -1);
            dgvPerformance.DataSource = new List<ConfusionMatrix> { confusionMatrix };

            foreach (DataGridViewColumn col in dgvPerformance.Columns) col.Visible = true;
            Column1.Visible = Column2.Visible = false;

            // Create performance scatterplot
            CreateResultScatterplot(zedGraphControl1, inputs, expectedd, outputd);
        }