Use the GridSubplot base class for epsc

bob/pad/base/script/vuln_figure.py

@@ -207,7 +207,7 @@ class Epc(VulnPlot):
         self._pdf_page.savefig(mpl.gcf())
 
 
-class Epsc(VulnPlot):
+class Epsc(VulnPlot, measure_figure.GridSubplot):
     ''' Handles the plotting of EPSC '''
 
     def __init__(self, ctx, scores, evaluation, func_load,
@@ -221,8 +221,7 @@ class Epsc(VulnPlot):
         self._var_param = var_param or "omega"
         self._fixed_params = fixed_params or [0.5]
         self._titles = ctx.meta.get('titles', []) * 2
-        self._legend_loc = self._legend_loc or 'upper center'
-        self._eval = True  # always eval data with EPC
+        self._eval = True  # always eval data with EPSC
         self._split = False
         self._nb_figs = 1
         self._sampling = ctx.meta.get('sampling', 5)
@@ -234,6 +233,9 @@ class Epsc(VulnPlot):
             raise click.BadParameter("You must provide 4 scores files:{licit,"
                                      "spoof}/{dev,eval}")
 
+        self._ncols = 1 if self._iapmr else 0
+        self._ncols += 1 if self._wer else 0
+
     def compute(self, idx, input_scores, input_names):
         ''' Plot EPSC for PAD'''
         licit_dev_neg = input_scores[0][0]
@@ -252,15 +254,11 @@ class Epsc(VulnPlot):
         elif self.n_systems > 1:
             legend = 'Sys%d' % (idx + 1)
 
-        n_col = 1 if self._iapmr else 0
-        n_col += 1 if self._wer else 0
-
         if not merge_sys or idx == 0:
             # axes should only be created once
-            mpl.figure()
-            self._axis1 = mpl.subplot(1, n_col, 1)
-            if n_col == 2:
-                self._axis2 = mpl.subplot(1, n_col, 2)
+            self._axis1 = self.create_subplot(0)
+            if self._ncols == 2:
+                self._axis2 = self.create_subplot(1)
             else:
                 self._axis2 = self._axis1
         points = 10
@@ -353,14 +351,7 @@ class Epsc(VulnPlot):
         mpl.xticks(rotation=self._x_rotation)
         if self._fixed_params is None or len(self._fixed_params) > 1 or \
            idx == self.n_systems - 1:
-            # all plots share same legends
-            lines, labels = self._axis1.get_legend_handles_labels()
-            mpl.gcf().legend(
-                lines, labels, loc=self._legend_loc, fancybox=True, mode="expand",
-                framealpha=0.5, ncol=self._nlegends, bbox_to_anchor=(0., 1.12, 1., .102)
-            )
-            mpl.tight_layout()
-            self._pdf_page.savefig(bbox_inches='tight')
+            self.finalize_one_page()
 
 
 class Epsc3D(Epsc):