From f428d6b11ebefcf080de5737448963ed251b18c2 Mon Sep 17 00:00:00 2001
From: robarbon <robert.arbon@gmail.com>
Date: Wed, 2 Mar 2022 16:11:52 +0000
Subject: [PATCH] fixed map_to_integers

---
 nmpath/auxfunctions.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/nmpath/auxfunctions.py b/nmpath/auxfunctions.py
index 7a7dbd4..1f5c04e 100644
--- a/nmpath/auxfunctions.py
+++ b/nmpath/auxfunctions.py
@@ -278,10 +278,16 @@ def map_to_integers(sequence, mapping_dict=None):
     '''
     if mapping_dict is None:
         mapping_dict = {}
+        counter = 0
+    else: 
+        counters = list(mapping_dict.values())
+        if len(counters) == 0: 
+            counter = 0
+        else:
+            counter = np.max(counters)+1
 
     new_sequence = np.zeros(len(sequence), dtype='int64')
 
-    counter = 0
 
     for i, element in enumerate(sequence):
         if element not in mapping_dict.keys():