increased figure size in plot_dispersion; updated first two entries in list of Figures in README

Author: Daniel Ruprecht

README.md

@@ -21,7 +21,8 @@ If you use it (or parts of it) for a publication, please cite
 How can I reproduce Figures from the publication?
 -----------------
 
- - Fig. 1 --> scripts/plot_dispersion.py with different parameters
+ - Fig. 1 and Fig. 2 --> scripts/plot_svd_vs_dt.py
+ - Fig. 3 --> scripts/plot_dispersion.py with parameter nu=0.0 and nu=0.1
  - Fig. 2 --> example/run.py
  - Fig. 3 --> scripts/plot_ieuler_dispersion.py
  - Fig. 4 --> scripts/plot_dispersion.py with approx_symbol=True
@@ -40,4 +41,4 @@ How can I reproduce Figures from the publication?
 Who do I talk to?
 -----------------
 
-This code is written by [Daniel Ruprecht](http://www.parallelintime.org/groups/leeds.html).
+This code is written by [Daniel Ruprecht](http://www.parallelintime.org/groups/leeds.html).

scripts/plot_dispersion.py

@@ -59,7 +59,7 @@ def normalise(R, T, target):
     U_speed  = 1.0
 
     # diffusivity parameter
-    nu       = 0.0
+    nu       = 0.1
 
     # select coarse integrator:
     # 0 = normal backward Euler method
@@ -84,7 +84,7 @@ def normalise(R, T, target):
 
     # number of discrete values between kappa=0 and kappa=pi for which the dispersion relation is computed.
     # try to increase this value of the normalisation fails.
-    Nsamples = 50
+    Nsamples = 30
 
     k_vec = np.linspace(0.0, np.pi, Nsamples+1, endpoint=False)
     k_vec = k_vec[1:]
@@ -199,7 +199,7 @@ def normalise(R, T, target):
         amp_factor[3+jj,i] = np.exp(sol_para.imag)
 
     ###
-    rcParams['figure.figsize'] = 2.5, 2.5
+    rcParams['figure.figsize'] = 3.54, 3.54
     fs = 8
     fig  = plt.figure()
     plt.plot(k_vec, phase[0,:], '--', color='k', linewidth=1.5, label='Exact')
@@ -237,4 +237,4 @@ def normalise(R, T, target):
     #plt.show()
     filename = 'parareal-dispersion-ampf.pdf'
     plt.gcf().savefig(filename, bbox_inches='tight')
-    call(["pdfcrop", filename, filename])
+    call(["pdfcrop", filename, filename])