Support python 3.7

1. post-processing module now support plot exact solution

Lib/BEM_Solver/BEM_2D_Postprocessing.py

@@ -171,7 +171,7 @@ def get_BDSolution(self,bd_markerID):
         return p,q,u,v
 
     ###########Visulation Module################
-    def plot_Solution(self,v_range=None,p_range=None,resolution=20):
+    def plot_Solution(self,v_range=None,p_range=None,resolution=20,exact_sol=None):
         """Plot pressure&velocity field and Preview the streamline
            v_range=(0,300),p_range=(50,100),resolution=20
 
@@ -194,6 +194,8 @@ def plot_Solution(self,v_range=None,p_range=None,resolution=20):
         v = np.empty(N, dtype=float)
         for i in range(N):
                 puv=self.BEMobj.get_Solution(Pts[i])
+                if(exact_sol is not None): #if we plot exact solution
+                    puv=exact_sol(Pts[i])
                 p[i],u[i],v[i]=puv[0],puv[1],puv[2]    
         Vtotal = np.sqrt(u**2 + v**2)
         #Resampling data to regular grid

README.md

@@ -22,7 +22,9 @@ Currently available features include:
 Special feature:
 * Multi-domain problem is solved by parallel domain decomposition method [Wang et al, 2018]
 
-`PyBEM2D` is currently support for `64-bit` `Windows` and `Linux` platforms, several `Jupyter-Notebook` examples are provided 
+`PyBEM2D` is currently support for `64-bit` `Windows` and `Linux` platforms, several `Jupyter-Notebook` examples are provided.
+
+`Anaconda 5.3` (https://www.anaconda.com/download/) is required. If code is not working, please run `python setup.py build_ext -i clean` @ "PyBEM2D\Lib\BEM_Solver\Elements\Cython" in terminal to compile the cython library for exact integration. The library works on both Windows and Linux.
 
 
 # Solving A potential porblem in PyBEM2D