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  • errors in generation of lattice,
  • errors in generation of look-up table,
  • errors in indexing - association of data with look-up table,
  • wrong lattice model.

A few cross-check crosschecks are presented below in order to address this issue.

 

Lattice

Triclinic crystal cell primitive vectors

We use a few methods from  pyimgalgos.FiberIndexing to generate lattice:

...

Code Block
# Triclinic crystal cell parameters:
#   a = 18.55 A
#   b = 27.19 A
#   c = 4.86 A
#   alpha = 90.00 deg
#   beta  = 90.00 deg
#   gamma = 78.47 deg

# 3-d space primitive vectors:
#   a1 = (18.55, 0.0, 0.0)
#   a2 = (-5.435623727109098, 26.645523961582906, 0.0)
#   a3 = (0.0, 0.0, 4.8601)

 

Reciprocal space primitive vectors

 b1, b2, b3 = reciprocal_from_bravias(a1, a2, a3) - converts 3-d primitive vectors to reciprocal space primitive vectors.

...

Code Block
# reciprocal space primitive vectors:
#   b1 = [ 0.05390836  0.01099718 -0.        ]
#   b2 = [ 0.          0.03752976  0.        ]
#   b3 = [ 0.         -0.          0.20575708]

 

Lattice generator and test

Then, call to method

    x, y, z, r, h, k, l = lattice(b1, b2, b3, hmax, kmax, lmax, cdtype)

...

Code Block
h.shape: (13, 9) 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 
row:    -4   -3   -2   -1    0    1    2    3    4 

k.shape: (13, 9) 
row:    -6   -6   -6   -6   -6   -6   -6   -6   -6 
row:    -5   -5   -5   -5   -5   -5   -5   -5   -5 
row:    -4   -4   -4   -4   -4   -4   -4   -4   -4 
row:    -3   -3   -3   -3   -3   -3   -3   -3   -3 
row:    -2   -2   -2   -2   -2   -2   -2   -2   -2 
row:    -1   -1   -1   -1   -1   -1   -1   -1   -1 
row:     0    0    0    0    0    0    0    0    0 
row:     1    1    1    1    1    1    1    1    1 
row:     2    2    2    2    2    2    2    2    2 
row:     3    3    3    3    3    3    3    3    3 
row:     4    4    4    4    4    4    4    4    4 
row:     5    5    5    5    5    5    5    5    5 
row:     6    6    6    6    6    6    6    6    6 

l.shape: (13, 9) 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 
row:     0    0    0    0    0    0    0    0    0 

x coords.shape: (13, 9) 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 
row:    -0.2156   -0.1617   -0.1078   -0.0539    0.0000    0.0539    0.1078    0.1617    0.2156 

y coords.shape: (13, 9) 
row:    -0.2692   -0.2582   -0.2472   -0.2362   -0.2252   -0.2142   -0.2032   -0.1922   -0.1812 
row:    -0.2316   -0.2206   -0.2096   -0.1986   -0.1876   -0.1767   -0.1657   -0.1547   -0.1437 
row:    -0.1941   -0.1831   -0.1721   -0.1611   -0.1501   -0.1391   -0.1281   -0.1171   -0.1061 
row:    -0.1566   -0.1456   -0.1346   -0.1236   -0.1126   -0.1016   -0.0906   -0.0796   -0.0686 
row:    -0.1190   -0.1081   -0.0971   -0.0861   -0.0751   -0.0641   -0.0531   -0.0421   -0.0311 
row:    -0.0815   -0.0705   -0.0595   -0.0485   -0.0375   -0.0265   -0.0155   -0.0045    0.0065 
row:    -0.0440   -0.0330   -0.0220   -0.0110    0.0000    0.0110    0.0220    0.0330    0.0440 
row:    -0.0065    0.0045    0.0155    0.0265    0.0375    0.0485    0.0595    0.0705    0.0815 
row:     0.0311    0.0421    0.0531    0.0641    0.0751    0.0861    0.0971    0.1081    0.1190 
row:     0.0686    0.0796    0.0906    0.1016    0.1126    0.1236    0.1346    0.1456    0.1566 
row:     0.1061    0.1171    0.1281    0.1391    0.1501    0.1611    0.1721    0.1831    0.1941 
row:     0.1437    0.1547    0.1657    0.1767    0.1876    0.1986    0.2096    0.2206    0.2316 
row:     0.1812    0.1922    0.2032    0.2142    0.2252    0.2362    0.2472    0.2582    0.2692 

z coords.shape: (13, 9) 
row:     0.0000    0.0000    0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000   -0.0000 
row:     0.0000    0.0000    0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000   -0.0000 
row:     0.0000    0.0000    0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000   -0.0000 
row:     0.0000    0.0000    0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000   -0.0000 
row:     0.0000    0.0000    0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000   -0.0000 
row:     0.0000    0.0000    0.0000    0.0000   -0.0000   -0.0000   -0.0000   -0.0000   -0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 
row:     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000 

r of lattice nodes.shape: (13, 9) 
row:     0.3449    0.3046    0.2697    0.2423    0.2252    0.2209    0.2300    0.2512    0.2817 
row:     0.3165    0.2736    0.2357    0.2058    0.1876    0.1847    0.1977    0.2238    0.2591 
row:     0.2901    0.2443    0.2031    0.1699    0.1501    0.1492    0.1675    0.1997    0.2403 
row:     0.2665    0.2176    0.1724    0.1348    0.1126    0.1150    0.1408    0.1803    0.2263 
row:     0.2463    0.1945    0.1451    0.1015    0.0751    0.0837    0.1202    0.1671    0.2179 
row:     0.2305    0.1764    0.1232    0.0725    0.0375    0.0601    0.1089    0.1618    0.2157 
row:     0.2201    0.1651    0.1100    0.0550    0.0000    0.0550    0.1100    0.1651    0.2201 
row:     0.2157    0.1618    0.1089    0.0601    0.0375    0.0725    0.1232    0.1764    0.2305 
row:     0.2179    0.1671    0.1202    0.0837    0.0751    0.1015    0.1451    0.1945    0.2463 
row:     0.2263    0.1803    0.1408    0.1150    0.1126    0.1348    0.1724    0.2176    0.2665 
row:     0.2403    0.1997    0.1675    0.1492    0.1501    0.1699    0.2031    0.2443    0.2901 
row:     0.2591    0.2238    0.1977    0.1847    0.1876    0.2058    0.2357    0.2736    0.3165 
row:     0.2817    0.2512    0.2300    0.2209    0.2252    0.2423    0.2697    0.3046    0.3449 

 

Rotation of the crystal lattice

 

Code Block
            xrot1, yrot1 = rotation(x, y, omega_deg)
            xrot2, zrot2 = rotation(xrot1, z, beta_deg)

 

 

Code Block
xrot2.shape: (13, 9) 
row:    -0.0504   -0.0106    0.0292    0.0690    0.1088    0.1485    0.1883    0.2281    0.2679 
row:    -0.0685   -0.0287    0.0111    0.0508    0.0906    0.1304    0.1702    0.2100    0.2498 
row:    -0.0866   -0.0469   -0.0071    0.0327    0.0725    0.1123    0.1521    0.1919    0.2316 
row:    -0.1048   -0.0650   -0.0252    0.0146    0.0544    0.0942    0.1339    0.1737    0.2135 
row:    -0.1229   -0.0831   -0.0433   -0.0035    0.0363    0.0760    0.1158    0.1556    0.1954 
row:    -0.1410   -0.1012   -0.0614   -0.0217    0.0181    0.0579    0.0977    0.1375    0.1773 
row:    -0.1591   -0.1194   -0.0796   -0.0398    0.0000    0.0398    0.0796    0.1194    0.1591 
row:    -0.1773   -0.1375   -0.0977   -0.0579   -0.0181    0.0217    0.0614    0.1012    0.1410 
row:    -0.1954   -0.1556   -0.1158   -0.0760   -0.0363    0.0035    0.0433    0.0831    0.1229 
row:    -0.2135   -0.1737   -0.1339   -0.0942   -0.0544   -0.0146    0.0252    0.0650    0.1048 
row:    -0.2316   -0.1919   -0.1521   -0.1123   -0.0725   -0.0327    0.0071    0.0469    0.0866 
row:    -0.2498   -0.2100   -0.1702   -0.1304   -0.0906   -0.0508   -0.0111    0.0287    0.0685 
row:    -0.2679   -0.2281   -0.1883   -0.1485   -0.1088   -0.0690   -0.0292    0.0106    0.0504 

yrot1.shape: (13, 9) 
row:    -0.3409   -0.3044   -0.2680   -0.2315   -0.1950   -0.1585   -0.1221   -0.0856   -0.0491 
row:    -0.3084   -0.2719   -0.2355   -0.1990   -0.1625   -0.1260   -0.0896   -0.0531   -0.0166 
row:    -0.2759   -0.2394   -0.2030   -0.1665   -0.1300   -0.0935   -0.0571   -0.0206    0.0159 
row:    -0.2434   -0.2069   -0.1705   -0.1340   -0.0975   -0.0610   -0.0245    0.0119    0.0484 
row:    -0.2109   -0.1744   -0.1380   -0.1015   -0.0650   -0.0285    0.0080    0.0444    0.0809 
row:    -0.1784   -0.1419   -0.1055   -0.0690   -0.0325    0.0040    0.0405    0.0769    0.1134 
row:    -0.1459   -0.1094   -0.0730   -0.0365    0.0000    0.0365    0.0730    0.1094    0.1459 
row:    -0.1134   -0.0769   -0.0405   -0.0040    0.0325    0.0690    0.1055    0.1419    0.1784 
row:    -0.0809   -0.0444   -0.0080    0.0285    0.0650    0.1015    0.1380    0.1744    0.2109 
row:    -0.0484   -0.0119    0.0245    0.0610    0.0975    0.1340    0.1705    0.2069    0.2434 
row:    -0.0159    0.0206    0.0571    0.0935    0.1300    0.1665    0.2030    0.2394    0.2759 
row:     0.0166    0.0531    0.0896    0.1260    0.1625    0.1990    0.2355    0.2719    0.3084 
row:     0.0491    0.0856    0.1221    0.1585    0.1950    0.2315    0.2680    0.3044    0.3409 

zrot2.shape: (13, 9) 
row:    -0.0135   -0.0028    0.0078    0.0185    0.0291    0.0398    0.0505    0.0611    0.0718 
row:    -0.0184   -0.0077    0.0030    0.0136    0.0243    0.0349    0.0456    0.0563    0.0669 
row:    -0.0232   -0.0126   -0.0019    0.0088    0.0194    0.0301    0.0407    0.0514    0.0621 
row:    -0.0281   -0.0174   -0.0068    0.0039    0.0146    0.0252    0.0359    0.0466    0.0572 
row:    -0.0329   -0.0223   -0.0116   -0.0009    0.0097    0.0204    0.0310    0.0417    0.0524 
row:    -0.0378   -0.0271   -0.0165   -0.0058    0.0049    0.0155    0.0262    0.0368    0.0475 
row:    -0.0426   -0.0320   -0.0213   -0.0107    0.0000    0.0107    0.0213    0.0320    0.0426 
row:    -0.0475   -0.0368   -0.0262   -0.0155   -0.0049    0.0058    0.0165    0.0271    0.0378 
row:    -0.0524   -0.0417   -0.0310   -0.0204   -0.0097    0.0009    0.0116    0.0223    0.0329 
row:    -0.0572   -0.0466   -0.0359   -0.0252   -0.0146   -0.0039    0.0068    0.0174    0.0281 
row:    -0.0621   -0.0514   -0.0407   -0.0301   -0.0194   -0.0088    0.0019    0.0126    0.0232 
row:    -0.0669   -0.0563   -0.0456   -0.0349   -0.0243   -0.0136   -0.0030    0.0077    0.0184 
row:    -0.0718   -0.0611   -0.0505   -0.0398   -0.0291   -0.0185   -0.0078    0.0028    0.0135