make GUI working even without actual data

pylot/core/read/data.py

@@ -10,8 +10,7 @@ from pylot.core.util import fnConstructor
 
 class Data(object):
     '''
-    Data container class providing ObSpy-Stream and -Event instances as
-    variables.
+    Data container with attributes wfdata holding ~obspy.core.stream.
 
     :type parent: PySide.QtGui.QWidget object, optional
     :param parent: A PySide.QtGui.QWidget object utilized when
@@ -75,6 +74,12 @@ class Data(object):
 
         pass #axes = widget.axes
 
+    def getEventID(self):
+        try:
+            return self.evtdata.get('resource_id').id
+        except:
+            return 'smi:bug/pylot/1234'
+
 
 class GenericDataStructure(object):
     '''
@@ -104,7 +109,7 @@ class GenericDataStructure(object):
 
 class SeiscompDataStructure(object):
     '''
-    Dictionary containing the data acces information for an SDS data archive:
+    Dictionary containing the data access information for an SDS data archive:
 
     :param str dataType: Desired data type. Default: ``'waveform'``
     :param sdate, edate: Either date string or an instance of

pylot/core/util/layouts.py

@@ -13,11 +13,15 @@ from PySide.QtGui import (QVBoxLayout,
 def layoutStationButtons(data, comp):
         layout = QVBoxLayout()
         stationButtons = []
+        try:
             st = data.select(component=comp)
             numStations = len(st)
             for n in range(numStations):
-            stationButtons[n] = QPushButton('%s'.format(
-                                            st[n].stats.station))
-        layout.addWidget(stationButtons)
-
+                stat = st[n].stats.station
+                stationButtons.append(QPushButton('%s'.format(stat)))
+        except:
+            for n in range(5):
+                stationButtons.append(QPushButton('ST%02d'.format(n)))
+        for button in stationButtons:
+            layout.addWidget(button)
         return layout