求解抛物型方程的交替方向隐式法P-R差分格式的matlab程序实现。-Solving Parabolic Equations PR alternating direction implicit difference scheme of matlab program.

二维抛物型方程的交替方向的隐格式，含有精确解和数值解，图像精确，测试完整，-Alternating direction implicit scheme dimensional parabolic equations containing the exact solution and numerical solution, image precision, testing complete,