ex-6: fix EMD typo

ex-6/dist.c

@@ -10,7 +10,7 @@
  * equally sized this can be futher simplified to give a simple
  * O(n) solution.
  */
-double edm_between(gsl_histogram *a, gsl_histogram *b) {
+double emd_between(gsl_histogram *a, gsl_histogram *b) {
   /* For the distance to make sense the
    * histograms must have the same area.
    */

ex-6/dist.h

@@ -11,7 +11,7 @@
  * equally sized this can be futher simplified to give a simple
  * O(n) solution.
  */
-double edm_between(gsl_histogram *a, gsl_histogram *b);
+double emd_between(gsl_histogram *a, gsl_histogram *b);
 
 
 /* Normalise a histogram: ie rescaling the bin

ex-6/plots/emd-round.py

@@ -9,7 +9,7 @@ def plot(table, title='', log=False):
     plt.subplot(211)
     if log:
         plt.xscale('log')
-    plt.title('EDM distance' + ' '*10, loc='right')
+    plt.title('EMD distance' + ' '*10, loc='right')
 
     plt.plot(table[0], table[1], color='#92182b')
     plt.tick_params(axis='y', labelcolor='#92182b')
@@ -31,7 +31,7 @@ def plot(table, title='', log=False):
 
 
 plt.rcParams['font.size'] = 12
-table = np.loadtxt('ex-6/plots/edm-round.txt')
+table = np.loadtxt('ex-6/plots/emd-round.txt')
 
 plot(table[:27].T, title='noiseless', log=True)
 plot(table[27:47].T, title=r'$\sigma=0.005$')

ex-6/test.c

@@ -104,8 +104,8 @@ pair_t experiment(
    * distance histogram.
    */
   pair_t dist;
-  dist.a = edm_between(hist, fft_clean);
-  dist.b = edm_between(hist, rl_clean);
+  dist.a = emd_between(hist, fft_clean);
+  dist.b = emd_between(hist, rl_clean);
 
   // free memory
   gsl_histogram_free(hist);