plotting scheme restructured: the same widgets are used for plotting the overview and the station plots, the plotting method has been moved to the widget side which makes more sense than having it on the data side;

new functions in utils module: prepTimeAxis returns a proper time axis array for a given start time and an obspy trace; getGlobalTimes returns the minimum start time and the maximum end time (edges) of a given obspy stream object

pylot/core/read/data.py

@@ -10,7 +10,8 @@ from obspy.core.event import (Event, Catalog)
 
 from pylot.core.read import readPILOTEvent
 
-from pylot.core.util import fnConstructor, createEvent, FormatError
+from pylot.core.util import fnConstructor, createEvent, FormatError, \
+    prepTimeAxis, getGlobalTimes
 
 
 class Data(object):
@@ -63,14 +64,7 @@ class Data(object):
         return self.cuttimes
 
     def updateCutTimes(self):
-        min_start = UTCDateTime()
-        max_end = None
-        for trace in self.getWFData().select(component=self.getComp()):
-            if trace.stats.starttime < min_start:
-                min_start = trace.stats.starttime
-                if max_end is None or trace.stats.endtime > max_end:
-                    max_end = trace.stats.endtime
-        self.cuttimes = [min_start, max_end]
+        self.cuttimes = getGlobalTimes(self.getWFData())
 
     def exportEvent(self, fnout=None, evtformat='QUAKEML'):
 
@@ -99,29 +93,6 @@ class Data(object):
             raise KeyError('''{0} export format
                               not implemented: {1}'''.format(evtformat, e))
 
-    def plotWFData(self, widget):
-        wfst = self.getWFData().select(component=self.getComp())
-        widget.axes.cla()
-        for n, trace in enumerate(wfst):
-            stime = trace.stats.starttime - self.getCutTimes()[0]
-            etime = trace.stats.endtime - self.getCutTimes()[1]
-            srate = trace.stats.sampling_rate
-            nsamp = len(trace.data)
-            tincr = trace.stats.delta
-            station = trace.stats.station
-            time_ax = np.arange(stime, nsamp / srate, tincr)
-            trace.normalize(trace.data.max() * 2)
-            widget.axes.plot(time_ax, trace.data + n, 'k')
-            xlabel = 'seconds since {0}'.format(self.getCutTimes()[0])
-            ylabel = ''
-            zne_text = {'Z': 'vertical', 'N': 'north-south', 'E': 'east-west'}
-            title = 'overview: {0} components'.format(zne_text[self.getComp()])
-            widget.updateWidget(xlabel, ylabel, title)
-            widget.setPlotDict(n, station)
-
-        widget.axes.autoscale(tight=True)
-
-
     def getComp(self):
         return self.comp
 
@@ -146,7 +117,8 @@ class Data(object):
     def appendWFData(self, fnames):
         assert isinstance(fnames, list), "input parameter 'fnames' is " \
                                          "supposed to be of type 'list' " \
-                                         "but is actually".format(type(fnames))
+                                         "but is actually {0}".format(type(
+                                                                        fnames))
         if self.dirty:
             self.resetWFData()