updating snapshot and loading datasets

app/spectralanalysis.py

@@ -19,6 +19,7 @@ class SpectralAnalysis:
         self.bs.stop()
         self.channel = None
         self.channels = [channel_dict[x] for x in names]
+        self.hasBStream=False
 
     def connect_name(self, name):
         index = names.index(name)
@@ -30,7 +31,12 @@ class SpectralAnalysis:
         self.channel = self.channels[ich]
         print('Connecting to BS-Channel:',self.channel)
         self.bs.channels.clear()
-        self.bs.get_vars(self.channel)  # this starts the stream into the cache
+        self.hasBStream=True
+        try:
+            self.bs.get_vars(self.channel)  # this starts the stream into the cache
+        except ValueError:
+            print('Cannot find requested channels in BS stream')
+            self.hasBStream=False            
         self.pv = PV(self.channel[0].replace('_Y','_X'))
 
     def terminate(self):

interface/__init__.py

@@ -9,5 +9,6 @@ from .save import getDatasetFileName
 from .load import loadDataset
 from .elog import writeElog
 from .slic import SlicScan
+from .slic import importSlicScan
 from .doocs import doocsread
 from .doocs import doocswrite

interface/load.py

@@ -3,10 +3,22 @@ import h5py
 
 def loadDataset(filename):
     hid = h5py.File(filename, "r")
+    icount = 0
     snap = loadSnap(hid)
-    data = loadData(hid)
+    data =[]
-    act = loadActuator(hid)
+    act = []
+    for key in hid.keys():
+        if 'scan' in key:
+            ID = int(key.split('_')[1])
+            print('Reading scan_%d' % ID)
+            data.append(loadData(hid,ID))
+            act.append(loadActuator(hid,ID))
+            icount +=1
     hid.close()
+    if icount == 0:
+        return None, None, None
+    elif icount == 1:
+        return data[0], act[0],snap
     return data,act,snap
  
 def loadSnap(hid):

interface/slic.py

@@ -62,7 +62,7 @@ class SlicScan(QObject):
         Thread(name='Snap-Acquisition',target=self.Tsnap).start()
 
     def Tsnap(self):
-        self.snap = getSnap()
+        self.snap = getSnap() 
         print('Acquired snap')
         self.sigsnap.emit(True)
 

interface/snap.py

@@ -103,7 +103,7 @@ def loadSnap(filename):
             if '.' in val:
                 res[pv]=float(val)
             else:
-                res[pv]= val 
+                res[pv]= val  # might be string!!!! 
     return res