From 8586f6f33bb401508fc433464bbe4c74be70b78b Mon Sep 17 00:00:00 2001
From: Junjie <junjie.zhang@eonerc.rwth-aachen.de>
Date: Fri, 27 Sep 2019 14:14:20 +0200
Subject: [PATCH] update slice_ts

---
 villas/dataprocessing/timeseries.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/villas/dataprocessing/timeseries.py b/villas/dataprocessing/timeseries.py
index 49edaec..c47fd71 100644
--- a/villas/dataprocessing/timeseries.py
+++ b/villas/dataprocessing/timeseries.py
@@ -29,8 +29,9 @@ class TimeSeries:
             slice_time=self.time[0 : int((end_time-start_time)/time_step)]
         else:
             slice_time=self.time[start_index:end_index]
-
         slice_values=self.values[start_index:end_index]
+        if(isinstance(slice_values[0], str)):
+            slice_values = [float(v_) for v_ in slice_values]
         ts_slice=TimeSeries(self.name+'_slice', slice_time, slice_values, self.label)
         return ts_slice
 
-- 
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