Revert changes to get_trimTPSData

sohstationviewer/model/handling_data.py

@@ -760,10 +760,35 @@ def get_trimTPSData(chan, startTm, endTm, every_day_5_min_list):
     # preset all 0 for all 5 minutes for each day
     tpsData = np.zeros((len(every_day_5_min_list), const.NO_5M_DAY))
 
-    zTracesInfo = trim_waveform_data(chan, startTm, endTm)
-    if not zTracesInfo:
+    # zoom in to the given range
+    chan['startIdx'] = 0
+    chan['endIdx'] = len(chan['tracesInfo'])
+
+    if ((startTm > chan['tracesInfo'][-1]['endTmEpoch']) or
+            (endTm < chan['tracesInfo'][0]['startTmEpoch'])):
         return False
 
+    indexes = [index for index, tr in enumerate(chan['tracesInfo'])
+               if tr['startTmEpoch'] > startTm]
+    if indexes != []:
+        chan['startIdx'] = indexes[0]
+        if chan['startIdx'] > 0:
+            chan['startIdx'] -= 1  # startTm in middle of trace
+    else:
+        chan['startIdx'] = 0
+
+    indexes = [idx for (idx, tr) in enumerate(chan['tracesInfo'])
+               if tr['endTmEpoch'] <= endTm]
+    if indexes != []:
+        chan['endIdx'] = indexes[-1]
+        if chan['endIdx'] < len(chan['tracesInfo']) - 1:
+            chan['endIdx'] += 1  # endTm in middle of trace
+    else:
+        chan['endIdx'] = 0
+    chan['endIdx'] += 1  # a[x:y+1] = [a[x], ...a[y]
+
+    zTracesInfo = chan['tracesInfo'][chan['startIdx']:chan['endIdx']]
+
     spr = chan['samplerate']
     chan['tps_data'] = []