Make small changes

src/analyticPlot.cpp

@@ -7,7 +7,7 @@
 #include <iomanip>
 
 #define RANGE 1000
-#define FILENAME "analytical_solution.txt"
+#define FILENAME "output/analytical_solution.txt"
 
 double u(double x);
 void generate_range(std::vector<double> &vec, double start, double stop, int n);

src/funcs.hpp

@@ -4,7 +4,9 @@
 #include <armadillo>
 #include <cmath>
 
-#define PRECISION 20
+#define PRECISION 8
+
+#define N_STEPS_EXP 7
 
 double f(double x);
 

src/generalAlgorithm.cpp

@@ -33,7 +33,7 @@ void general_algorithm_main()
     int steps;
     double step_size;
 
-    for (int i = 0; i < 6; i++) {
+    for (int i = 0; i < N_STEPS_EXP; i++) {
         steps = std::pow(10, i+1);
         step_size = 1./(double) steps;
 
@@ -58,7 +58,7 @@ void general_algorithm_error()
     int steps;
     double step_size, abs_err, rel_err, u_i, v_i;
 
-    for (int i=0; i < 7; i++) {
+    for (int i=0; i < N_STEPS_EXP; i++) {
         steps = std::pow(10, i+1);
         step_size = 1./(double) steps;
 

src/main.cpp

@@ -20,7 +20,7 @@ void timing() {
     ofile.open("output/timing.txt");
 
     // Timing
-    for (int i=1; i <= 6; i++) {
+    for (int i=1; i < N_STEPS_EXP; i++) {
         n_steps = std::pow(10, i);
         clock_t g_1, g_2, s_1, s_2;
         double g_res = 0, s_res = 0;

src/plot_analytic_solution.py

@@ -6,7 +6,7 @@ def main():
     x = []
     v = []
 
-    with open('analytical_solution.txt') as f:
+    with open('output/analytical_solution.txt') as f:
         for line in f:
             a, b = line.strip().split()
             x.append(float(a))

src/plot_general_alg.py

@@ -4,8 +4,7 @@ import numpy as np
 analytical_func = lambda x: 1 - (1 - np.exp(-10))*x - np.exp(-10*x)
 
 def main():
-    fig, ax = plt.subplots()
-    for i in range(6):
+    for i in range(7):
         x = []
         y = []
         x.append(0.)
@@ -20,12 +19,12 @@ def main():
         x.append(1.)
         y.append(0.)
 
-        ax.plot(x, y, label=f"n$_{{steps}} = 10^{i+1}$")
+        plt.plot(x, y, label=f"n$_{{steps}} = 10^{i+1}$")
 
     x = np.linspace(0, 1, 1001)
-    ax.plot(x, analytical_func(x), label=f"u$_{{exact}}$")
-    ax.legend()
-    fig.savefig("../latex/images/problem7.pdf")
+    plt.plot(x, analytical_func(x), label=f"u$_{{exact}}$")
+    plt.legend()
+    plt.savefig("../latex/images/problem7.pdf")
 
 if __name__ == "__main__":
     main()

src/plot_general_alg_error.py

@@ -4,10 +4,7 @@ import matplotlib.pyplot as plt
 # plt.rc('font', family='serif')
 
 def main():
-    fig_a, ax_a = plt.subplots()
-    fig_b, ax_b = plt.subplots()
-    fig_c, ax_c = plt.subplots()
-    for i in range(6):
+    for i in range(7):
         x = []
         abs_err = []
         rel_err = []
@@ -19,16 +16,25 @@ def main():
                 abs_err.append(float(abs_err_i))
                 rel_err.append(float(rel_err_i))
 
-        ax_a.plot(x, abs_err, label=f"n$_{{steps}} = 10^{i+1}$")
-        ax_b.plot(x, rel_err, label=f"n$_{{steps}} = 10^{i+1}$")
+        plt.figure(1)
+        plt.plot(x, abs_err, label=f"n$_{{steps}} = 10^{i+1}$")
+        plt.figure(2)
+        plt.plot(x, rel_err, label=f"n$_{{steps}} = 10^{i+1}$")
 
-        ax_c.plot(i+1, max(rel_err), marker="o", markersize=10)
+        plt.figure(3)
+        plt.plot(i+1, max(rel_err), marker="o", markersize=10)
     
-    ax_a.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)
-    ax_b.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)
-    fig_a.savefig("../latex/images/problem8_a.pdf", bbox_inches="tight")
-    fig_b.savefig("../latex/images/problem8_b.pdf", bbox_inches="tight")
-    fig_c.savefig("../latex/images/problem8_c.pdf", bbox_inches="tight")
+    plt.figure(1)
+    plt.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)
+    plt.figure(2)
+    plt.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)
+    
+    plt.figure(1)
+    plt.savefig("../latex/images/problem8_a.pdf", bbox_inches="tight")
+    plt.figure(2)
+    plt.savefig("../latex/images/problem8_b.pdf", bbox_inches="tight")
+    plt.figure(3)
+    plt.savefig("../latex/images/problem8_c.pdf", bbox_inches="tight")
 
 if __name__ == "__main__":
     main()

src/specialAlgorithm.cpp

@@ -33,7 +33,7 @@ void special_algorithm_main()
     int steps;
     double sub_sig, main_sig, sup_sig, step_size;
 
-    for (int i = 0; i < 6; i++) {
+    for (int i = 0; i < N_STEPS_EXP; i++) {
         steps = std::pow(10, i+1);
         step_size = 1./(double) steps;
         build_g_vec(steps, g_vec);

src/timing.py

@@ -1,5 +1,4 @@
 import matplotlib.pyplot as plt
-import numpy as np
 
 def main():
     fig, ax = plt.subplots()
@@ -14,11 +13,11 @@ def main():
             gen_alg.append(float(gen_i))
             spec_alg.append(float(spec_i))
 
-        ax.plot(x, gen_alg, label=f"General algorithm")
-        ax.plot(x, spec_alg, label=f"Special algorithm")
+        plt.plot(x, gen_alg, label=f"General algorithm")
+        plt.plot(x, spec_alg, label=f"Special algorithm")
 
-    ax.legend()
-    fig.savefig("../latex/images/problem10.pdf")
+    plt.legend()
+    plt.savefig("../latex/images/problem10.pdf")
 
 if __name__ == "__main__":
     main()