Changeset 3741 for TOOLS/CPLRESTART/nemo.py
- Timestamp:
- 04/12/18 12:10:00 (6 years ago)
- File:
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- 1 edited
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TOOLS/CPLRESTART/nemo.py (modified) (1 diff)
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TOOLS/CPLRESTART/nemo.py
r3739 r3741 22 22 23 23 def lbc (ptab, nperio=6, cd_type='T', psgn=1.0) : 24 """25 ptab : Input array24 """ 25 ptab : Input array 26 26 rank 2 at least : patb[...., lat, lon] 27 nperio : Type of periodicity 28 1, 4, 6 : Cyclic on i dimension (generaly longitudes) 29 2 : Obsolete (was symmetric condition at southern boundary ?) 30 3, 4 : North fold T-point pivot (legacy ORCA2) 31 5, 6 : North fold F-point pivot (ORCA1, ORCA025, ORCA2 with new grid for paleo) 32 cd_type : Grid specification : T, U, V or F 33 psgn : For change of sign for vector components 27 nperio : Type of periodicity 28 1, 4, 6 : Cyclic on i dimension (generaly longitudes) 29 2 : Obsolete (was symmetric condition at southern boundary ?) 30 3, 4 : North fold T-point pivot (legacy ORCA2) 31 5, 6 : North fold F-point pivot (ORCA1, ORCA025, ORCA2 with new grid for paleo) 32 cd_type : Grid specification : T, U, V or F 33 psgn : For change of sign for vector components 34 35 See NEMO documentation for further details 36 """ 37 jpi = ptab.shape[-1] 34 38 35 See NEMO documentation for further details 36 """ 37 38 jpi = ptab.shape[-1] 39 40 # 41 #> East-West boundary conditions 42 # -------------------------------- 43 44 if nperio in [1, 4, 6] : 45 # ... cyclic 46 ptab [...,:, 0] = ptab [...,:,-2] 47 ptab [...,:, -1] = ptab [...,:, 1] 48 49 # 50 #> North-South boundary conditions 51 # ---------------------------------- 52 if nperio in [3, 4] : # North fold T-point pivot 53 if cd_type in [ 'T', 'W' ] : # T-, W-point 54 ptab[..., -1, 1: ] = psgn * ptab[..., -3, -1:0:-1 ] 55 ptab[..., -1, 0 ] = psgn * ptab[..., -3, 2 ] 56 ptab[..., -2, jpi//2: ] = psgn * ptab[..., -2, jpi//2:0:-1 ] 57 58 if cd_type == 'U' : 59 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -3, -1:0:-1 ] 60 ptab[..., -1, 0 ] = psgn * ptab[..., -3, 1 ] 61 ptab[..., -1, -1 ] = psgn * ptab[..., -3, -2 ] 62 ptab[..., -2, jpi//2-1:] = psgn * ptab[..., -2, jpi//2+1:0:-1] 39 # 40 #> East-West boundary conditions 41 # -------------------------------- 42 43 if nperio in [1, 4, 6] : 44 # ... cyclic 45 ptab [...,:, 0] = ptab [...,:,-2] 46 ptab [...,:, -1] = ptab [...,:, 1] 47 48 # 49 #> North-South boundary conditions 50 # ---------------------------------- 51 if nperio in [3, 4] : # North fold T-point pivot 52 if cd_type in [ 'T', 'W' ] : # T-, W-point 53 ptab[..., -1, 1: ] = psgn * ptab[..., -3, -1:0:-1 ] 54 ptab[..., -1, 0 ] = psgn * ptab[..., -3, 2 ] 55 ptab[..., -2, jpi//2: ] = psgn * ptab[..., -2, jpi//2:0:-1 ] 56 57 if cd_type == 'U' : 58 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -3, -1:0:-1 ] 59 ptab[..., -1, 0 ] = psgn * ptab[..., -3, 1 ] 60 ptab[..., -1, -1 ] = psgn * ptab[..., -3, -2 ] 61 ptab[..., -2, jpi//2-1:] = psgn * ptab[..., -2, jpi//2+1:0:-1] 62 63 if cd_type == 'V' : 64 ptab[..., -2, 1: ] = psgn * ptab[..., -3, jpi-1:0:-1 ] 65 ptab[..., -1, 1: ] = psgn * ptab[..., -4, -1:0:-1 ] 66 ptab[..., -1, 0 ] = psgn * ptab[..., -4, 2 ] 67 68 if cd_type == 'F' : 69 ptab[..., -2, 0:-1 ] = psgn * ptab[..., -3, -1:0:-1 ] 70 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -4, -1:0:-1 ] 71 ptab[..., -1, 0 ] = psgn * ptab[..., -4, 1 ] 72 ptab[..., -1, -1 ] = psgn * ptab[..., -4, -2 ] 73 74 if nperio in [5, 6] : # North fold F-point pivot 75 if cd_type in ['T', 'W'] : 76 ptab[..., -1, 0: ] = psgn * ptab[..., -2, -1::-1 ] 63 77 64 if cd_type == 'V' : 65 ptab[..., -2, 1: ] = psgn * ptab[..., -3, jpi-1:0:-1 ] 66 ptab[..., -1, 1: ] = psgn * ptab[..., -4, -1:0:-1 ] 67 ptab[..., -1, 0 ] = psgn * ptab[..., -4, 2 ] 68 69 if cd_type == 'F' : 70 ptab[..., -2, 0:-1 ] = psgn * ptab[..., -3, -1:0:-1 ] 71 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -4, -1:0:-1 ] 72 ptab[..., -1, 0 ] = psgn * ptab[..., -4, 1 ] 73 ptab[..., -1, -1 ] = psgn * ptab[..., -4, -2 ] 74 75 if nperio in [5, 6] : # North fold F-point pivot 76 if cd_type in ['T', 'W'] : 77 ptab[..., -1, 0: ] = psgn * ptab[..., -2, -1::-1 ] 78 79 if cd_type == 'U' : 80 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -2, -2::-1 ] 81 ptab[..., -1, -1 ] = psgn * ptab[..., -2, 0 ] 82 83 if cd_type == 'V' : 84 ptab[..., -1, 0: ] = psgn * ptab[..., -3, -1::-1 ] 85 ptab[..., -2, jpi/2: ] = psgn * ptab[..., -2, jpi/2-1::-1 ] 86 87 if cd_type == 'F' : 88 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -3, -2::-1 ] 89 ptab[..., -1, -1 ] = psgn * ptab[..., -3, 0 ] 90 ptab[..., -2, jpi//2:-1] = psgn * ptab[..., -2, jpi//2-2::-1 ] 91 92 return ptab 93 78 if cd_type == 'U' : 79 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -2, -2::-1 ] 80 ptab[..., -1, -1 ] = psgn * ptab[..., -2, 0 ] 81 82 if cd_type == 'V' : 83 ptab[..., -1, 0: ] = psgn * ptab[..., -3, -1::-1 ] 84 ptab[..., -2, jpi/2: ] = psgn * ptab[..., -2, jpi/2-1::-1 ] 85 86 if cd_type == 'F' : 87 ptab[..., -1, 0:-1 ] = psgn * ptab[..., -3, -2::-1 ] 88 ptab[..., -1, -1 ] = psgn * ptab[..., -3, 0 ] 89 ptab[..., -2, jpi//2:-1] = psgn * ptab[..., -2, jpi//2-2::-1 ] 90 91 return ptab 92 94 93 ## =========================================================================== 95 94 ##
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