diff --git a/Homework3/src/input_generator.py b/Homework3/src/input_generator.py
index b3da2f8..4afc566 100644
--- a/Homework3/src/input_generator.py
+++ b/Homework3/src/input_generator.py
@@ -1,49 +1,49 @@
 import numpy as np
 
 # nb of grid points in x and y directions
-N = 10
+N = 32
 
 # Positions over -1 to 1 interval
 x = np.linspace(-1.0, 1.0, N, endpoint= True)
 y = np.linspace(-1.0, 1.0, N, endpoint= True)
 
 X, Y = np.meshgrid(x, y)
 
 """
 Z = np.zeros((N, N))
 
 # Velocities and forces are set to 0 (material points)
 V_x = np.zeros((N, N))
 V_y = np.zeros((N, N))
 V_z = np.zeros((N, N))
 
 F_x = np.zeros((N, N))
 F_y = np.zeros((N, N))
 F_z = np.zeros((N, N))
 """
 
 # Temperature and heat source
 T = np.ones((N,N)) # uniform T
 H_v = np.zeros((N,N)) # no heat source
 
 
 # Rearrange the data to be written into the input csv file
 X = X.flatten(order='C')
 Y = Y.flatten(order='C')
 """
 Z = Z.flatten(order='C')
 V_x = V_x.flatten(order='C')
 V_y = V_y.flatten(order='C')
 V_z = V_z.flatten(order='C')
 F_x = F_x.flatten(order='C')
 F_y = F_y.flatten(order='C')
 F_z = F_z.flatten(order='C')
 """
 T = T.flatten(order='C')
 H_v = H_v.flatten(order='C')
 
 #output = np.column_stack((X, Y, Z, V_x, V_y, V_z, F_x, F_y, F_z, T, H_v))
 output = np.column_stack((X, Y, T, H_v))
 
-np.savetxt('input.csv', output, delimiter=' ')
+np.savetxt('input.csv', output, delimiter=',')
 
diff --git a/Homework3/src/material_point.cc b/Homework3/src/material_point.cc
index f721731..7bad8bf 100644
--- a/Homework3/src/material_point.cc
+++ b/Homework3/src/material_point.cc
@@ -1,14 +1,14 @@
 #include "material_point.hh"
 
 /* -------------------------------------------------------------------------- */
 void MaterialPoint::printself(std::ostream& stream) const {
   Particle::printself(stream);
-  stream << x << " " << y << " " << temperature << " " << heat_rate;
+  stream << " " << temperature << " " << heat_rate;
 }
 
 /* -------------------------------------------------------------------------- */
 
 void MaterialPoint::initself(std::istream& sstr) {
   Particle::initself(sstr);
-  sstr >> x >> y >> temperature >> heat_rate;;
+  sstr >> temperature >> heat_rate;;
 }
diff --git a/Homework3/src/material_point.hh b/Homework3/src/material_point.hh
index e9a552c..383f7d5 100644
--- a/Homework3/src/material_point.hh
+++ b/Homework3/src/material_point.hh
@@ -1,27 +1,26 @@
 #ifndef __MATERIAL_POINT__HH__
 #define __MATERIAL_POINT__HH__
 
 /* -------------------------------------------------------------------------- */
 #include "particle.hh"
 
 //! Class for MaterialPoint
 class MaterialPoint : public Particle {
   /* ------------------------------------------------------------------------ */
   /* Methods                                                                  */
   /* ------------------------------------------------------------------------ */
 
 public:
     void printself(std::ostream& stream) const override;
     void initself(std::istream& sstr) override;
 
     Real & getTemperature(){return temperature;};
     Real & getHeatRate(){return heat_rate;};
   
 private:
     Real temperature;
     Real heat_rate;
-    Real x, y;
 };
 
 /* -------------------------------------------------------------------------- */
 #endif  //__MATERIAL_POINT__HH__