From f3b1a2bf3459abb1be8b56d600b56e920051b49e Mon Sep 17 00:00:00 2001
From: Fabian Joswig <fabian.joswig@ed.ac.uk>
Date: Mon, 18 Oct 2021 13:28:47 +0100
Subject: [PATCH] tag attribute added to Obs

---
 pyerrors/pyerrors.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pyerrors/pyerrors.py b/pyerrors/pyerrors.py
index 2da2ae28..a1f18491 100644
--- a/pyerrors/pyerrors.py
+++ b/pyerrors/pyerrors.py
@@ -37,7 +37,8 @@ class Obs:
     __slots__ = ['names', 'shape', 'r_values', 'deltas', 'N', 'value', 'dvalue',
                  'ddvalue', 'reweighted', 'S', 'tau_exp', 'N_sigma', 'e_names',
                  'e_content', 'e_dvalue', 'e_ddvalue', 'e_tauint', 'e_dtauint',
-                 'e_windowsize', 'e_rho', 'e_drho', 'e_n_tauint', 'e_n_dtauint']
+                 'e_windowsize', 'e_rho', 'e_drho', 'e_n_tauint', 'e_n_dtauint',
+                 'tag']
 
     e_tag_global = 0
     S_global = 2.0
@@ -94,6 +95,8 @@ class Obs:
         self.e_n_tauint = {}
         self.e_n_dtauint = {}
 
+        self.tag = None
+
     def gamma_method(self, **kwargs):
         """Calculate the error and related properties of the Obs.