From 7f50044b430d34f077020db0c7ef8f999fdd1ed2 Mon Sep 17 00:00:00 2001
From: Robert Smallshire <robert@smallshire.org.uk>
Date: Mon, 8 Jun 2015 23:38:24 +0200
Subject: [PATCH] Makes SegYReader compute the maximum number of samples per
 trace before serializing (to the cache).

---
 segpy/reader.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/segpy/reader.py b/segpy/reader.py
index ce154d9..ef7ccec 100644
--- a/segpy/reader.py
+++ b/segpy/reader.py
@@ -312,6 +312,8 @@ class SegYReader(object):
         file_pos = self._fh.tell()
         file_mode = self._fh.mode
 
+        _ = self.max_num_trace_samples()
+
         state = self.__dict__.copy()
         state['__version__'] = __version__
         state['_file_name'] = filename