1 | ;+ |
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2 | ; |
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3 | ; @file_comments |
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4 | ; Determine the min and the max of a mask array |
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5 | ; |
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6 | ; @categories |
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7 | ; Plotting |
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8 | ; |
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9 | ; @param TAB {in}{required} |
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10 | ; The array whose we determine the min and the max |
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11 | ; |
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12 | ; @param MASK {in}{required} |
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13 | ; The mask array |
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14 | ; |
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15 | ; @keyword MININ {type=scalar} |
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16 | ; If it is not defined, it takes the value of VRAIMIN |
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17 | ; |
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18 | ; @keyword MAXIN {type=scalar} |
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19 | ; If it is not defined, it takes the value of VRAIMAX |
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20 | ; |
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21 | ; @keyword ZEROMIDDLE |
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22 | ; Force the middle of the colorbar to be equal |
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23 | ; to 0 (force max=max(abs([min,max])) and min=-max) |
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24 | ; |
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25 | ; @keyword _EXTRA |
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26 | ; Used to pass keywords |
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27 | ; |
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28 | ; @keyword USETRI |
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29 | ; To force using triangulation. |
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30 | ; |
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31 | ; @param VRAIMIN {out} |
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32 | ; The min of the array |
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33 | ; |
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34 | ; @param VRAIMAX {out} |
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35 | ; The max of the array |
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36 | ; |
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37 | ; @uses |
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38 | ; Common.pro |
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39 | ; |
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40 | ; @restrictions |
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41 | ; Look if the field is constant on the sea |
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42 | ; |
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43 | ; @history |
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44 | ; Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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45 | ; 11/12/98 |
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46 | ; |
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47 | ; @version |
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48 | ; $Id$ |
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49 | ; |
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50 | ; @todo seb: manque les param glam et gphi |
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51 | ; |
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52 | ;- |
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53 | ; |
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54 | PRO determineminmax, tab, mask, vraimin, vraimax, glam, gphi, MAXIN = maxin, MININ = minin, INTERVALLE = intervalle, usetri = usetri, ZEROMIDDLE = zeromiddle, _EXTRA = ex |
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55 | ; |
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56 | compile_opt idl2, strictarrsubs |
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57 | ; |
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58 | @common |
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59 | ; |
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60 | ; Type of the vertical grid: |
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61 | if vargrid EQ 'W' then nz = nzw ELSE nz = nzt |
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62 | ; liste des points mer |
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63 | if (size(mask))[0] EQ 3 then mer = mask[*, *, 0] $ |
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64 | ELSE mer = mask |
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65 | ; If key_irregular eq 1, we mask also points which are not in the geographic |
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66 | ; domain defined by lon1,lon2,lat1,lat2 |
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67 | if keyword_set(key_irregular) AND n_elements(glam) NE 0 AND n_elements(gphi) NE 0 then begin |
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68 | dom = where(glam LT lon1 OR glam GT lon2 OR gphi LT lat1 OR gphi GT lat2) |
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69 | if dom[0] NE -1 then mer[dom] = 0 |
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70 | endif |
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71 | ; |
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72 | mer = where(mer eq 1) |
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73 | ; |
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74 | if mer[0] eq -1 then begin |
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75 | ras = report('Il n''y a que de la terre sur le dessin!') |
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76 | vraimax = 0 |
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77 | vraimin = 0 |
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78 | maxin = vraimax+1 |
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79 | minin = vraimin-1 |
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80 | usetri = 0 |
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81 | return |
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82 | endif |
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83 | ; ma and mi : max and min on ocean points |
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84 | vraimax = max(tab[mer], min = vraimin, _extra = ex) |
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85 | sameminmax = testvar(var = minin) EQ testvar(var = maxin) |
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86 | if n_elements(maxin) EQ 0 OR sameminmax then maxin = vraimax |
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87 | if n_elements(minin) EQ 0 OR sameminmax then BEGIN |
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88 | if keyword_set(intervalle) then minin = floor(vraimin/intervalle)*intervalle $ |
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89 | ELSE minin = vraimin |
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90 | endif |
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91 | if vraimin eq vraimax then BEGIN |
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92 | IF size(vraimin, /type) EQ 1 THEN vraimin = fix(vraimin) |
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93 | question = ['Warning: constant filed, same value everywhere : ' + strtrim(vraimin, 2) +'!', 'Shall we make the plot?'] |
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94 | answer = report(question, /default_no, /question) |
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95 | if answer then begin |
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96 | maxin = vraimax+1 |
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97 | minin = vraimin-1 |
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98 | endif ELSE tab = -1 |
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99 | ENDIF |
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100 | IF keyword_set(zeromiddle) THEN BEGIN |
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101 | maxin = max(abs([minin, maxin])) |
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102 | minin = -maxin |
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103 | ENDIF |
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104 | |
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105 | |
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106 | return |
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107 | end |
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