[44] | 1 | ;------------------------------------------------------------ |
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| 2 | ;------------------------------------------------------------ |
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| 3 | ;------------------------------------------------------------ |
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| 4 | ;+ |
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[106] | 5 | ; @file_comments |
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[44] | 6 | ; read the old binary direct access file that contains the |
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| 7 | ; distance to the coast in OPA. |
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| 8 | ; based on the OPA subroutines dtacof and parctl |
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| 9 | ; |
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[106] | 10 | ; @categories for OPA before NetCDF |
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[44] | 11 | ; |
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| 12 | ; |
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[106] | 13 | ; @returns a structure that contains two elements: tdistcoast (the |
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[44] | 14 | ; distance for the t-points) and fdiscoast (the distance for the |
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| 15 | ; f-points). |
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| 16 | ; |
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[106] | 17 | ; @history Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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[44] | 18 | ; June, 2002 |
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| 19 | ;- |
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| 20 | ;------------------------------------------------------------ |
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| 21 | ;------------------------------------------------------------ |
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| 22 | ;------------------------------------------------------------ |
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| 23 | |
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| 24 | FUNCTION read3fromopa, unit, params, num |
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| 25 | offset=params.reclen*params.jpk*(num-1L) |
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| 26 | a=assoc(unit,dblarr(params.jpiglo,params.jpjglo,params.jpk,/nozero),offset) |
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| 27 | b = a[0] |
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| 28 | return, b |
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| 29 | end |
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| 30 | |
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[106] | 31 | ;+ |
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| 32 | ; @param filename {in}{required} filename (with the whole path if necessary) |
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| 33 | ; @param jpiglo {in}{required} |
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| 34 | ; @param jpjglo {in}{required} |
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| 35 | ; @param jpk {in}{required} |
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| 36 | ; dimensions of the opa grid |
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| 37 | ; @keyword IBLOC ibloc size, default: ibloc = 4096L |
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| 38 | ; @keyword JPBYT jpbyt size, default: jpbyt = 8L |
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| 39 | ; @keyword NUMREC number of records in the file. default: numrec = 19L*jpk |
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| 40 | ; @history Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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| 41 | ; June, 2002 |
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| 42 | ;- |
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[44] | 43 | FUNCTION readoldopadistcoast, filename, jpiglo, jpjglo, jpk, IBLOC = ibloc, JPBYT = jpbyt, NUMREC = numrec |
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| 44 | ; |
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| 45 | iname_file = findfile(filename) |
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| 46 | if iname_file[0] EQ '' then begin |
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| 47 | print, 'Bad file name' |
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| 48 | return, -1 |
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| 49 | ENDIF ELSE iname_file = iname_file[0] |
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| 50 | ; open the file |
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| 51 | openr,numcost , iname_file, /get_lun, /swap_if_little_endian |
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| 52 | ; check the size of the file |
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| 53 | filepamameters = fstat(numcost) |
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| 54 | ; defaut parameter definition for ORCA2 |
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| 55 | IF keyword_set(ibloc) THEN ibloc = long(ibloc) ELSE ibloc = 4096L |
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| 56 | jpiglo = long(jpiglo) |
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| 57 | jpjglo = long(jpjglo) |
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| 58 | jpk = long(jpk) |
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| 59 | IF keyword_set(jpbyt) THEN jpbyt = long(jpbyt) ELSE jpbyt = 8L |
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| 60 | ; record length computation |
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| 61 | reclen = ibloc*((jpiglo*jpjglo*jpbyt-1 )/ibloc+1) |
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| 62 | ; number of records |
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| 63 | IF keyword_set(numrec) THEN numrec = long(numrec) ELSE numrec = 3L*jpk |
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| 64 | ; difference between the record length and the size of the contened |
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| 65 | ; array. |
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| 66 | toomuch = reclen-jpiglo*jpjglo*jpbyt |
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| 67 | ; expected size computation |
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| 68 | size = numrec*reclen-toomuch |
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| 69 | if size NE filepamameters.size then begin |
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| 70 | print, 'The size of the file is not the expected one!' |
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| 71 | print, 'Check your file or the values of ibloc, jpiglo,' |
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| 72 | print, 'jpjglo, jpk, jpbyt, numrec in this program' |
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| 73 | return, -1 |
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| 74 | endif |
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| 75 | ; first record: six 64-bit integer to read. |
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| 76 | ; default definition |
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| 77 | iimlu = long64(999) |
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| 78 | ijmlu = long64(999) |
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| 79 | ikmlu = long64(999) |
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| 80 | ; read |
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| 81 | readu, numcost, iimlu, ijmlu, ikmlu |
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| 82 | if iimlu NE jpiglo then begin |
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| 83 | print, 'iimlu = '+strtrim(iimlu, 1)+' differs from jpiglo ='+strtrim(jpiglo, 1) |
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| 84 | return, -1 |
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| 85 | endif |
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| 86 | if ijmlu NE jpjglo then begin |
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| 87 | print, 'ijmlu = '+strtrim(ijmlu, 1)+' differs from jpjglo ='+strtrim(jpjglo, 1) |
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| 88 | return, -1 |
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| 89 | endif |
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| 90 | if ikmlu NE jpk then begin |
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| 91 | print, 'ikmlu = '+strtrim(ikmlu, 1)+' differs from jpk ='+strtrim(jpk, 1) |
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| 92 | return, -1 |
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| 93 | endif |
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| 94 | ; other records |
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| 95 | params = {jpiglo:jpiglo, jpjglo:jpjglo, jpk:jpk, reclen:reclen} |
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| 96 | tdistcoast = read3fromopa(numcost, params, 2) |
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| 97 | fdistcoast = read3fromopa(numcost, params, 3) |
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| 98 | ; |
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| 99 | close, numcost |
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| 100 | free_lun, numcost |
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| 101 | |
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| 102 | return, {tdistcoast:tdistcoast, fdistcoast:fdistcoast} |
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| 103 | end |
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