Merge branch 'i30_29_zoom_emptygap' into 'master'

Fig Error when zoom in the section that has no data

See merge request !64

sohstationviewer/view/plotting/plotting_widget/plotting_axes.py

@@ -249,6 +249,8 @@ class PlottingAxes:
             ax.spines['top'].set_visible(False)
             ax.spines['bottom'].set_visible(False)
         else:
+            if y.size == 0:
+                return
             min_y = y.min()
             max_y = y.max()
             ax.spines['top'].set_visible(True)

sohstationviewer/view/plotting/plotting_widget/plotting_widget.py

@@ -482,6 +482,8 @@ class PlottingWidget(QtWidgets.QScrollArea):
                 if hasattr(ax, 'y'):
                     # don't need to reset y range if ax.y not exist
                     new_x = ax.x[new_x_indexes]
+                    if new_x.size == 0:
+                        return
                     new_min_x = min(new_x)
                     new_max_x = max(new_x)
                     try: