Merge branch 'plotting' into 'NIFTy_5'

Different scaling for y axis in power spectrum plots

See merge request !336

nifty5/plot.py

@@ -323,7 +323,8 @@ def _plot1D(f, ax, **kwargs):
         plt.yscale(kwargs.pop("yscale", "log"))
         xcoord = dom.k_lengths
         for i, fld in enumerate(f):
-            ycoord = fld.to_global_data()
+            ycoord = fld.to_global_data_rw()
+            ycoord[0] = ycoord[1]
             plt.plot(xcoord, ycoord, label=label[i],
                      linewidth=linewidth[i], alpha=alpha[i])
         _limit_xy(**kwargs)