plot titles

proxtoolbox/Problems/OrbitalTomog/Graphics/Phase_graphics.py

@@ -96,13 +96,15 @@ def Phase_graphics_3d(config, output):
     phys_constraint_plot = XYZStackViewer(output['u1'])
     fourier_constraint_plot = XYZStackViewer(output['u2'])
 
-    convergence_plots, ax = subplots(1, 2, figsize=(6, 3.5))
+    convergence_plots, ax = subplots(1, 2, figsize=(7, 3))
     ax[0].semilogy(output['change'])
+    ax[0].set_title('Change')
     ax[0].set_xlabel('iteration')
     ax[0].set_ylabel('$||x^{2k+2}-x^{2k}||$')
     if "diagnostic" in config:
         ax[1].semilogy(output['gap'])
         ax[1].set_xlabel('iteration')
+        ax[1].set_title('Gap')
         ax[1].set_ylabel('$||x^{2k+1}-x^{2k}||$')
     show()