From 281d3366be9fb26d91717c81cd736bd89c1dcbbe Mon Sep 17 00:00:00 2001
From: miketrumpis <mtrumpis@gmail.com>
Date: Wed, 22 Feb 2017 08:46:59 -0500
Subject: [PATCH] BF: Skip PCA projection and results storing for spike-less
 groups

---
 klusta/traces/spikedetekt.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/klusta/traces/spikedetekt.py b/klusta/traces/spikedetekt.py
index 829da1b..22c64ed 100644
--- a/klusta/traces/spikedetekt.py
+++ b/klusta/traces/spikedetekt.py
@@ -653,6 +653,8 @@ def step_extract(self, n_samples=None,
             # self._store.delete(name='components', chunk_key=chunk.key)
             # split: {group: {'spike_samples': ..., 'waveforms':, 'masks':}}
             for group, out in split.items():
+                if pcs[group] is None:
+                    continue
                 out['features'] = self.features(out['waveforms'], pcs[group])
                 # Checking that spikes are increasing.
                 spikes = out['spike_samples']