Skip some param translation in the JPK driver for channel-less segments.

diff --git a/hooke/driver/jpk.py b/hooke/driver/jpk.py
index 4e5ab0fc983e2d28f9395d97b59eb149a99f31e3..39dea4f1f17fe93d20bfb27763e6e8661bf10a0f 100644 (file)
--- a/hooke/driver/jpk.py
+++ b/hooke/driver/jpk.py
@@ -199,6 +199,8 @@ class JPKDriver (Driver):
             'raw info':params,
             #'time':self._time_from_TODO(raw_info[]),
             }
+        if len(chan_info['channels']['list']) == 0:
+            return info
         force_unit = self._zip_unit(
             chan_info['channel']['vDeflection']['conversion-set']['conversion']['force']['scaling'],
             version)