updated user instructions at the beginning of the script

pyfai-tools/update-geom-from-lab6.py

@@ -1,5 +1,25 @@
 #!/usr/bin/python
 
+# author J.Beale
+
+"""
+# aim
+use .poni file from pyFAI or pixel x, y, clen inputs and energy to convert geom
+file ready for initial hewl processing
+
+# usage
+<no poni file>
+python update-geom-from-lab6.py -g <path-to-geom-file>, -x beam x position (in pixels),
+                                -y beam y postion (in pixels), -c camera length (in m),
+                                -e pulse energy (in eV), -j name of jungfrau, -p p-group name
+<with poni file>
+python update-geom-from-lab6.py -g <path-to-geom-file>, -i <path-to-poni-file>,
+                                -j name of jungfrau, -p p-group name
+
+# output
+creates an updated .geom file with a naming convention <jungfrau>_<p-group>_<date>.geom
+"""
+
 from runpy import run_path
 import pandas as pd
 import numpy as np
@@ -100,8 +120,7 @@ def write_new_positions( path_to_geom, beam_x, beam_y, clen, energy, jungfrau, p
     current_geom_file = re.sub( current_energy, new_energy, current_geom_file )
 
     # create geom new file
-    geom_start = path_to_geom[:-5]
-    new_geom_name = "crmx8M_{0}_{1}.geom".format( p_group, date )
+    new_geom_name = "{0}_{1}_{2}.geom".format( jungfrau, p_group, date )
     
     # write new geom file
     f = open( new_geom_name, "w" )