From ac69b99434e521022aa0897bada91df97137921c Mon Sep 17 00:00:00 2001
From: Laurent Mercadier <laurent.mercadier@xfel.eu>
Date: Sun, 13 Oct 2019 09:08:08 +0200
Subject: [PATCH] simplified positionToDelay function
---
Laser_utils.py | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/Laser_utils.py b/Laser_utils.py
index 157f387..55e44a3 100644
--- a/Laser_utils.py
+++ b/Laser_utils.py
@@ -1,8 +1,7 @@
-def positionToDelay(data, key, origin=0, invert = False, reflections=1):
+def positionToDelay(pos, origin=0, invert = False, reflections=1):
''' converts a motor position in mm into optical delay in picosecond
Inputs:
- data: dataset containing delay stage motor position
- key: key of the delay stage
+ pos: array-like delay stage motor position
origin: motor position of time zero in mm
invert: bool, inverts the sign of delay if True
reflections: number of bounces in the delay stage
@@ -12,7 +11,7 @@ def positionToDelay(data, key, origin=0, invert = False, reflections=1):
'''
c_ = 299792458 *1e-9 # speed of light in mm/ps
x = -1 if invert else 1
- return 2*reflections*(data[key]-origin)*x/c_
+ return 2*reflections*(pos-origin)*x/c_
def degToRelPower(x, theta0=0):
''' converts a half-wave plate position in degrees into relative power
--
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