fix for issue #241

Author: jswhit

src/pygrib/_pygrib.pyx

@@ -686,6 +686,8 @@ def setdates(gribmessage grb):
         elif grb.has_key('stepRange'):
             # if forecastTime doesn't exist, use end of stepRange.
             ftime = grb['stepRange'] # computed key, uses stepUnits
+            if grb.has_key('stepUnits') and grb.stepUnits in _ftimedict:
+                grb.fcstimeunits = _ftimedict[grb.stepUnits]
             # if it's a range, use the end of the range to define validDate
             try: 
                 ftime = float(ftime.split('-')[1])
@@ -869,16 +871,16 @@ cdef class gribmessage(object):
                 inventory.append(levstring)
         elif self.valid_key('level'):
             inventory.append(':level %s' % self['level'])
-        if self.valid_key('stepRange'):
+        if self.valid_key('forecastTime'):
+            ftime = repr(self['forecastTime'])
+            inventory.append(':fcst time %s %s'% (ftime,self.fcstimeunits))
+        elif self.valid_key('stepRange'):
             ftime = self['stepRange'] # computed key, uses stepUnits
             if self.valid_key('stepType') and self['stepType'] != 'instant':
                 inventory.append(':fcst time %s %s (%s)'%\
                     (ftime,self.fcstimeunits,self.stepType))
             else:
                 inventory.append(':fcst time %s %s'% (ftime,self.fcstimeunits))
-        elif self.valid_key('forecastTime'):
-            ftime = repr(self['forecastTime'])
-            inventory.append(':fcst time %s %s'% (ftime,self.fcstimeunits))
         if self.valid_key('dataDate') and self.valid_key('dataTime'):
             inventory.append(
             ':from '+repr(self['dataDate'])+'%04i' % self['dataTime'])