fix log-spectrogram plot, see #78

megies · Sep 21, 2018 · e7c607b · e7c607b
1 parent a0e9c9b
commit e7c607b
Showing 1 changed file with 8 additions and 4 deletions.
diff --git a/obspyck/obspyck.py b/obspyck/obspyck.py
@@ -1463,10 +1463,14 @@ def drawAxes(self):
                             cmap=self.spectrogramColormap, axes=ax, zorder=-10)
                 textcolor = "red"
                 # adjust spectrogram start time offset, relative to reference time
-                x1, x2, y1, y2 = ax.images[0].get_extent()
-                ax.images[0].set_extent((
-                    x1 + self.options.starttime_offset,
-                    x2 + self.options.starttime_offset, y1, y2))
+                if log:
+                    quadmesh_ = ax.collections[0]
+                    quadmesh_._coordinates[:, :, 0] += self.options.starttime_offset
+                else:
+                    x1, x2, y1, y2 = ax.images[0].get_extent()
+                    ax.images[0].set_extent((
+                        x1 + self.options.starttime_offset,
+                        x2 + self.options.starttime_offset, y1, y2))
             else:
                 # normalize with overall sensitivity and convert to nm/s
                 # if not explicitly deactivated on command line