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--- fileformat:gve [2019/09/04 15:45] – smerkel
+++ fileformat:gve [2019/09/04 15:51] (current) – smerkel
@@ Line 43: / Line 43: @@
   * The first line of the file contains the unit cell parameters and lattice centering (one of P,A,B,C,I,F).
   * The wavelength and wedge angle are expected on the next lines (needed to compute ideal two theta, omega and azimuth angles for computed orientations).
-  * A list of computed ds (ds = d*=||**G**|| = 1/d) values and expected h,k,l values for the unit cell. d* is 1/d-spacing and is expressed in Angstrom. Note that [[software:grainspotter|GrainSpotter]] can override this list of the genhkl option is set in the input file.
+  * A list of computed theoretical g-vectors for the unit cell with
+      * ds = d*= ||**G**|| = 1/d (expressed in Angstrom)
+      * h, k, l values for the unit cell.
+  * Note that [[software:grainspotter|GrainSpotter]] can override this list of the ''genhkl'' option is set in the input file.
   * The actual scattering vectors (g-vectors) extracted from the experimental data follow and
-    * gx x-component of scattering vector (along the beam) with all angles at zero (units 1/Angstrom) gy y-component of scattering vector (toward the door) with all angles at zero (units 1/Angstrom) gz z-component of scattering vector (roughly up) with all angles at zero (units 1/Angstrom) xc spatially corrected peak x-position on detector (units: pixels) yc spatially corrected peak y-position on detector (units: pixels) ds 1/d-spacing - modulus of scattering vector - <math> ds = frac{lambda}{ 2 sin theta}</math> eta - azimuthal angle. omega rotation angle of scan spotid is an spot identifier to follow the individual spot at any process step xl x-component of scattering vector in the laboratory coordinate system (along the beam) with all angles at zero (units microns) yl y-component of scattering vector in the laboratory coordinate system (toward the door) with all angles at zero (units microns) zl z-component of scattering vector in the laboratory coordinate system (roughly up) with all angles at zero (units microns) Written by: ImageD11/guitransformer.py Read by: ImageD11/indexing.py and GrainSpotter and possibly other programs..
+    * gx = x-component of scattering vector (along the beam) with all angles at zero (units 1/Angstrom)
+    * gy = y-component of scattering vector (toward the door) with all angles at zero (units 1/Angstrom)
+    * gz = z-component of scattering vector (roughly up) with all angles at zero (units 1/Angstrom)
+    * xc = spatially corrected peak x-position on detector (units: pixels)
+    * yc = spatially corrected peak y-position on detector (units: pixels)
+    * ds 1/d-spacing - modulus of scattering vector - <math> ds = λ / (2 sin θ)
+    * eta = azimuthal angle
+    * omega = rotation angle of scan
+    * spotid is an spot identifier to follow the individual spot at any process step
+    * xl = x-component of scattering vector in the laboratory coordinate system (along the beam) with all angles at zero (units microns)
+    * yl = y-component of scattering vector in the laboratory coordinate system (toward the door) with all angles at zero (units microns)
+    * zl = z-component of scattering vector in the laboratory coordinate system (roughly up) with all angles at zero (units microns)
+These files are written by ImageD11/guitransformer.py and read by ImageD11/indexing.py and GrainSpotter and possibly other programs.
-  * The first line are information on the sample crystal structure.
-  * Wavelength is on the second line
-  * Wedge is on the third line
-  * Lines below are a list of theoretical hkl's (G-vectors), which will be used during indexing. Not that [[software:grainspotter|GrainSpotter]] can override this list of the genhkl option is set in the input file. For each, you have ds (||**G**|| = 1/d), h, k, and l.
-  * Below are the list of experimental G-Vectors. ds eta, and omega are 1/d, η, and ω for each peak.