[yt-svn] commit/yt: brittonsmith: Merged in chummels/yt (pull request #1789)

[commits-noreply at bitbucket.org]

1 new commit in yt:

https://bitbucket.org/yt_analysis/yt/commits/2b6c44d4b501/
Changeset:   2b6c44d4b501
Branch:      yt
User:        brittonsmith
Date:        2015-10-26 18:52:28+00:00
Summary:     Merged in chummels/yt (pull request #1789)

LightRay was using reverse of LOS velocity.
Affected #:  1 file

diff -r 75c9b92eb87a6e379461548c23f3b3902fa2b666 -r 2b6c44d4b501ef1e4fc55959f978ce596cf747c5 yt/analysis_modules/cosmological_observation/light_ray/light_ray.py
--- a/yt/analysis_modules/cosmological_observation/light_ray/light_ray.py
+++ b/yt/analysis_modules/cosmological_observation/light_ray/light_ray.py
@@ -441,7 +441,8 @@
                     sub_vel = ds.arr([sub_ray['velocity_x'],
                                       sub_ray['velocity_y'],
                                       sub_ray['velocity_z']])
-                    sub_data['velocity_los'].extend((np.rollaxis(sub_vel, 1) *
+                    # line of sight velocity is reversed relative to ray
+                    sub_data['velocity_los'].extend(-1*(np.rollaxis(sub_vel, 1) *
                                                      line_of_sight).sum(axis=1)[asort])
                     del sub_vel

Repository URL: https://bitbucket.org/yt_analysis/yt/

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