| 1 | ;------------------------------------------------------------ |
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| 2 | ;------------------------------------------------------------ |
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| 3 | ;------------------------------------------------------------ |
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| 4 | ;+ |
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| 5 | ; NAME: readbat |
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| 6 | ; |
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| 7 | ; PURPOSE: reading the bathymetry ASCII file of OPA |
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| 8 | ; |
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| 9 | ; CATEGORY: for OPA |
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| 10 | ; |
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| 11 | ; CALLING SEQUENCE: bat=readbat(filename) |
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| 12 | ; |
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| 13 | ; INPUTS: |
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| 14 | ; filename: a string containing the filename, |
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| 15 | ; |
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| 16 | ; KEYWORD PARAMETERS: |
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| 17 | ; /ZERO: to put 0 on land instead of negatives values for the islands. |
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| 18 | ; |
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| 19 | ; OUTPUTS: a 2d array |
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| 20 | ; |
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| 21 | ; COMMON BLOCKS:no |
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| 22 | ; |
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| 23 | ; SIDE EFFECTS: |
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| 24 | ; |
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| 25 | ; RESTRICTIONS: |
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| 26 | ; |
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| 27 | ; EXAMPLE: |
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| 28 | ; |
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| 29 | ; MODIFICATION HISTORY:Sebastien Masson (smasson@lodyc.jussieu.fr) |
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| 30 | ; May 31, 2002 |
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| 31 | ; based on batlec2.pro, written by Maurice Imbard, March 17, 1998 |
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| 32 | ;- |
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| 33 | FUNCTION readbat, filename, ZERO = zero |
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| 34 | |
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| 35 | ;; |
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| 36 | ;; lecture de la bathymetrie |
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| 37 | ;; |
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| 38 | iname_file = findfile(filename) |
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| 39 | if iname_file[0] EQ '' then begin |
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| 40 | print, 'Bad file name' |
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| 41 | return, -1 |
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| 42 | ENDIF ELSE iname_file = iname_file[0] |
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| 43 | openr, iunit, iname_file, /get_lun |
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| 44 | ; readf, iunit, FORMAT = '(16x,2i8)', iim, ijm |
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| 45 | ; iim = long(iim) |
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| 46 | ; ijm = long(ijm) |
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| 47 | tmp = '' |
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| 48 | readf, iunit, tmp |
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| 49 | tmp = strsplit(tmp,' ',/extract) |
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| 50 | iim = long(tmp[n_elements(tmp)-2]) |
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| 51 | ijm = long(tmp[n_elements(tmp)-1]) |
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| 52 | ; print, iim, ijm |
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| 53 | ifreq = 40L |
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| 54 | ifin = iim/ifreq+1 |
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| 55 | irest = iim-(ifin-1)*ifreq |
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| 56 | ; print, ifin,irest,ifreq |
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| 57 | zbati = intarr(ifreq) |
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| 58 | zbati2 = intarr(irest) |
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| 59 | zbat = intarr(iim,ijm) |
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| 60 | ; |
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| 61 | readf, iunit, FORMAT = '(/)' |
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| 62 | readf, iunit, FORMAT = '(/)' |
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| 63 | il1 = 0 |
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| 64 | FOR jn = 1, ifin-1 DO BEGIN |
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| 65 | readf, iunit, FORMAT = '(/)' |
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| 66 | readf, iunit, FORMAT = '(/)' |
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| 67 | il2 = min([ iim-1, il1+ifreq-1] ) |
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| 68 | readf, iunit, FORMAT = '(/)' |
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| 69 | readf, iunit, FORMAT = '(/)' |
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| 70 | readf, iunit, FORMAT = '(/)' |
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| 71 | il3 = il2-(jn-1)*ifreq |
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| 72 | iformat = string('(', il3+2, 'i3)') |
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| 73 | ; print,jn,il1,il2,il3,ifreq-1 |
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| 74 | FOR jj = ijm-1, 0, -1 DO BEGIN |
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| 75 | readf, iunit, FORMAT = iformat, ij, zbati |
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| 76 | zbat(il1:il2, jj) = zbati |
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| 77 | ENDFOR |
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| 78 | il1 = il1 + ifreq |
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| 79 | ENDFOR |
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| 80 | readf, iunit, FORMAT = '(/)' |
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| 81 | readf, iunit, FORMAT = '(/)' |
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| 82 | il2 = min([ iim-1, il1+ifreq-1] ) |
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| 83 | readf, iunit, FORMAT = '(/)' |
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| 84 | readf, iunit, FORMAT = '(/)' |
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| 85 | readf, iunit, FORMAT = '(/)' |
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| 86 | il3 = il2-(ifin-1)*ifreq |
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| 87 | iformat = string('(', il3+2, 'i3)') |
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| 88 | ; print, irest-1,il1,il2,il3 |
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| 89 | FOR jj = ijm-1, 0, -1 DO BEGIN |
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| 90 | readf, iunit, FORMAT = iformat, ij, zbati2 |
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| 91 | zbat(il1:il2, jj) = zbati2 |
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| 92 | ENDFOR |
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| 93 | close, iunit |
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| 94 | free_lun, iunit |
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| 95 | ;; |
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| 96 | if keyword_set(zero) then zbat = 0 > zbat |
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| 97 | return, zbat |
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| 98 | end |
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