fix a bug in the theta0 calculation for a path

This commit fixes a bug in the calculation of the average rms width of the
angular distribution for a path with a KL expansion. I also made a lot of
updates to the test-path program:

- plot the distribution of the KL expansion coefficients
- plot the standard deviation of the angular distribution as a function of
  distance along with the prediction
- plot the simulated and reconstructed path in 3D

1 files changed, 1 insertions, 1 deletions

diff --git a/src/path.h b/src/path.h
index 6c71a0a..449088f 100644
--- a/src/path.h
+++ b/src/path.h
@@ -12,7 +12,7 @@
  * distribution such that it effectively averages across the face of a PMT.
  *
  * FIXME: Should do some tests to figure out what is the best value. */
-#define MIN_THETA0 0.02
+#define MIN_THETA0 0.01
 
 typedef double getKineticEnergyFunc(double x, void *params);