本文整理了Java中org.opengis.referencing.operation.Matrix.getElement()方法的一些代码示例，展示了Matrix.getElement()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Matrix.getElement()方法的具体详情如下：
包路径：org.opengis.referencing.operation.Matrix
类名称：Matrix
方法名：getElement

Matrix.getElement介绍

[英]Retrieves the value at the specified row and column of this matrix.
[中]检索此矩阵指定行和列的值。

代码示例

代码示例来源：origin: geotools/geotools

/**
 * Creates a new matrix initialized to the same value than the specified one. The specified
 * matrix size must be {@value #SIZE}×{@value #SIZE}.
 */
public Matrix2(final Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = matrix.getElement(0, 0);
  m01 = matrix.getElement(0, 1);
  m10 = matrix.getElement(1, 0);
  m11 = matrix.getElement(1, 1);
}

代码示例来源：origin: geotools/geotools

@Override
public void invert(Matrix matrix) throws SingularMatrixException {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  if (matrix.getElement(0, 0) == 0) {
    throw new SingularMatrixException("1 dimensional matrix is singular");
  }
  m00 = 1.0 / matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

/**
 * Creates a new matrix initialized to the same value than the specified one. The specified
 * matrix size must be {@value #SIZE}×{@value #SIZE}.
 */
public Matrix1(final Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void negate(Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = -matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void mul(Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 *= matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void sub(Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 -= matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void mul(Matrix matrix1, Matrix matrix2) {
  if (matrix1.getNumRow() != SIZE || matrix1.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  if (matrix2.getNumRow() != SIZE || matrix2.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = matrix1.getElement(0, 0) * matrix2.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void transpose(Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

/** {@inheritDoc} */
public final void multiply(final Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 *= matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void mul(double scalar, Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = scalar * matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
public void sub(double scalar, Matrix matrix) {
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  m00 = scalar - matrix.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

@Override
  public void sub(Matrix matrix1, Matrix matrix2) {
    if (matrix1.getNumRow() != SIZE || matrix1.getNumCol() != SIZE) {
      throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
    }
    if (matrix2.getNumRow() != SIZE || matrix2.getNumCol() != SIZE) {
      throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
    }
    m00 = matrix1.getElement(0, 0) - matrix2.getElement(0, 0);
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Constructs a transform from the specified matrix. The matrix should be affine, but it will
 * not be verified.
 *
 * @param matrix The matrix.
 */
protected ProjectiveTransform(final Matrix matrix) {
  numRow = matrix.getNumRow();
  numCol = matrix.getNumCol();
  elt = new double[numRow * numCol];
  int index = 0;
  for (int j = 0; j < numRow; j++) {
    for (int i = 0; i < numCol; i++) {
      elt[index++] = matrix.getElement(j, i);
    }
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Creates a new matrix initialized to the same value than the specified one. The specified
 * matrix size must be {@value #SIZE}×{@value #SIZE}.
 */
public Matrix4(final Matrix matrix) {
  super(SIZE);
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  for (int j = 0; j < SIZE; j++) {
    for (int i = 0; i < SIZE; i++) {
      setElement(j, i, matrix.getElement(j, i));
    }
  }
}

代码示例来源：origin: geotools/geotools

/** Gets the derivative of this function at a value. */
public double derivative(final double value) throws TransformException {
  final DirectPosition1D p = new DirectPosition1D(value);
  final Matrix m = derivative(p);
  assert m.getNumRow() == 1 && m.getNumCol() == 1;
  return m.getElement(0, 0);
}

代码示例来源：origin: geotools/geotools

/**
 * Creates a new matrix initialized to the same value than the specified one. The specified
 * matrix size must be {@value #SIZE}×{@value #SIZE}.
 */
public Matrix3(final Matrix matrix) {
  mat = new DMatrix3x3();
  if (matrix.getNumRow() != SIZE || matrix.getNumCol() != SIZE) {
    throw new IllegalArgumentException(Errors.format(ErrorKeys.ILLEGAL_MATRIX_SIZE));
  }
  for (int j = 0; j < SIZE; j++) {
    for (int i = 0; i < SIZE; i++) {
      setElement(j, i, matrix.getElement(j, i));
    }
  }
}
/**

代码示例来源：origin: geotools/geotools

/**
 * Cast (or convert) Matrix to internal DMatrixRMaj representation required for CommonOps_DDRM.
 *
 * @param matrix
 * @return
 */
private DMatrixRMaj internal(Matrix matrix) {
  if (matrix instanceof GeneralMatrix) {
    return ((GeneralMatrix) matrix).mat;
  } else {
    DMatrixRMaj a = new DMatrixRMaj(matrix.getNumRow(), matrix.getNumCol());
    for (int j = 0; j < a.numRows; j++) {
      for (int i = 0; i < a.numCols; i++) {
        a.set(j, i, matrix.getElement(j, i));
      }
    }
    return a;
  }
}

代码示例来源：origin: geotools/geotools

/** Asserts that the specified matrix is diagonal. */
  private static void assertDiagonal(final Matrix matrix) {
    final int nrow = matrix.getNumRow();
    final int ncol = matrix.getNumCol();
    for (int j = 0; j < nrow; j++) {
      for (int i = 0; i < ncol; i++) {
        if (i != j) {
          assertEquals("row " + j + ", col " + i, 0.0, matrix.getElement(j, i), EPS);
        }
      }
    }
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Constructs a new matrix and copies the initial values from the parameter matrix.
 *
 * @param matrix The matrix to copy.
 */
public GeneralMatrix(final Matrix matrix) {
  if (matrix instanceof GeneralMatrix) {
    mat = new DMatrixRMaj(((GeneralMatrix) matrix).mat);
  } else {
    mat = new DMatrixRMaj(matrix.getNumRow(), matrix.getNumCol());
    final int height = getNumRow();
    final int width = getNumCol();
    for (int j = 0; j < height; j++) {
      for (int i = 0; i < width; i++) {
        mat.set(j, i, matrix.getElement(j, i));
      }
    }
  }
}

代码示例来源：origin: geotools/geotools

@Override
public void invert(Matrix matrix) throws SingularMatrixException {
  DMatrixRMaj a;
  if (matrix instanceof GeneralMatrix) {
    a = new DMatrixRMaj(((GeneralMatrix) matrix).mat);
  } else {
    a = new DMatrixRMaj(matrix.getNumRow(), matrix.getNumCol());
    for (int j = 0; j < mat.numRows; j++) {
      for (int i = 0; i < mat.numCols; i++) {
        mat.set(j, i, matrix.getElement(j, i));
      }
    }
  }
  boolean success = CommonOps_DDRM.invert(a);
  if (!success) {
    throw new SingularMatrixException("Could not invert, possible singular matrix?");
  }
  this.mat = a;
}