From 55e48965fa90f639142288f626435ba7fe192e6b Mon Sep 17 00:00:00 2001
From: mer0m <baptiste.marechal@femto-st.fr>
Date: Mon, 13 Feb 2017 11:26:15 +0100
Subject: [PATCH] abs

---
 fit_waist.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fit_waist.py b/fit_waist.py
index a7d7df9..6206f00 100644
--- a/fit_waist.py
+++ b/fit_waist.py
@@ -24,7 +24,7 @@ for f in files:
 
     '''optimization with non-linear least squares method'''
     Ppopt, Pcov = curve_fit(P, xmes, Pmes)
-    data_waist.append([int(f[-7:-4]), Ppopt[3]])
+    data_waist.append([int(f[-7:-4]), abs(Ppopt[3])])
 
     '''plot'''
     p[0].plot(xmes, Pmes, 'o')
@@ -49,4 +49,4 @@ p[1].plot(numpy.linspace(data_waist[0,0], data_waist[-1,0], 100), W(numpy.linspa
 p[1].plot(numpy.linspace(data_waist[0,0], data_waist[-1,0], 100), -W(numpy.linspace(data_waist[0,0], data_waist[-1,0], 100), *popt), 'r')
 p[1].grid()
 
-plt.show()
\ No newline at end of file
+plt.show()
-- 
2.16.4