1 | load "$NCARG_ROOT/lib/ncarg/nclex/gsun/gsn_code.ncl" |
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2 | load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl" |
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3 | load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl" |
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4 | load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl" |
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5 | |
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6 | ; cross-sections |
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7 | ; last change: $Id: crosssections.ncl 127 2007-10-23 11:05:25Z raasch $ |
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8 | |
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9 | begin |
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10 | ; |
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11 | ; set default value(s) for shell script variables assigned on command line |
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12 | if ( .not. isvar("cm") ) then ; colormap |
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13 | cm = "ncview_default" |
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14 | end if |
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15 | if ( .not. isvar("di") ) then ; input directory (with final /) |
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16 | di = "" |
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17 | end if |
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18 | if ( .not. isvar("d") ) then ; output directory (with final /) |
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19 | d = di |
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20 | end if |
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21 | if ( .not. isvar("fi") ) then ; base name of input file (without suffix) |
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22 | fi = "example_xy" |
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23 | end if |
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24 | if ( .not. isvar("fill_mode") ) then ; "AreaFill", "RasterFill" or "CellFill" |
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25 | fill_mode = "AreaFill" |
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26 | end if |
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27 | if ( .not. isvar("fo") ) then ; base name of output files (without suffix) |
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28 | fo = "" |
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29 | end if |
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30 | if ( .not. isvar("mode") ) then ; output mode ("Fill" or "Line") |
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31 | mode = "Fill" |
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32 | end if |
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33 | if ( .not. isvar("t") ) then ; output time step |
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34 | t = 0 |
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35 | end if |
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36 | if ( .not. isvar("var") ) then ; variable to be output |
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37 | var = "u_xy" |
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38 | end if |
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39 | if ( .not. isvar("xs") ) then ; output x-coordinate range start (in m) |
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40 | xs = -1e+38 |
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41 | end if |
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42 | if ( .not. isvar("xe") ) then ; output x-coordinate range end (in m) |
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43 | xe = 1e+38 |
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44 | end if |
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45 | if ( .not. isvar("ys") ) then ; output y-coordinate range start (in m) |
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46 | ys = -1e+38 |
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47 | end if |
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48 | if ( .not. isvar("ye") ) then ; output y-coordinate range end (in m) |
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49 | ye = 1e+38 |
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50 | end if |
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51 | if ( .not. isvar("zs") ) then ; output z-coordinate range start (in m) |
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52 | zs = -1e+38 |
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53 | end if |
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54 | if ( .not. isvar("ze") ) then ; output z-coordinate range end (in m) |
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55 | ze = 1e+38 |
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56 | end if |
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57 | ; |
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58 | ; open input file |
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59 | f = addfile( di + fi + ".nc", "r" ) |
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60 | ; |
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61 | ; open workstation(s) and set colormap |
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62 | wks_x11 = gsn_open_wks("x11","cross-section") ; X11 workstation |
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63 | gsn_define_colormap(wks_x11,cm) |
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64 | if ( isvar("fo") ) then |
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65 | wks_pdf = gsn_open_wks("pdf",d+fo) ; optional workstations |
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66 | gsn_define_colormap(wks_pdf,cm) |
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67 | wks_eps = gsn_open_wks("eps",d+fo) ; for output on file |
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68 | gsn_define_colormap(wks_eps,cm) |
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69 | wks_ps = gsn_open_wks("ps",d+fo) |
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70 | gsn_define_colormap(wks_ps,cm) |
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71 | end if |
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72 | ; |
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73 | ; read input data using 'coordinate subscripting' |
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74 | ; NCL uses the closest corresponding values (in case of two equally distant |
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75 | ; values NCL chooses the smaller one) |
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76 | raw_data = f->$var$(t:t,{zs:ze},{ys:ye},{xs:xe}) |
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77 | raw_data!0 = "t" |
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78 | raw_data!1 = "z" |
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79 | raw_data!2 = "y" |
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80 | raw_data!3 = "x" |
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81 | time = raw_data&t |
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82 | ; |
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83 | ; reduce variable dimensions from 4D to 2D according to output ranges |
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84 | if ( zs .eq. ze ) then |
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85 | data = raw_data(0,0,:,:) |
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86 | x_axis = "x" |
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87 | y_axis = "y" |
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88 | plane = "z" |
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89 | if ( raw_data&z .eq. -1 ) then |
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90 | level = "-average" |
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91 | else |
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92 | level = "=" + raw_data&z + "m" |
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93 | end if |
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94 | else |
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95 | if ( ys .eq. ye ) then |
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96 | data = raw_data(0,:,0,:) |
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97 | x_axis = "x" |
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98 | y_axis = "z" |
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99 | plane = "y" |
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100 | if ( raw_data&y .eq. -1 ) then |
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101 | level = "-average" |
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102 | else |
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103 | level = "=" + raw_data&y + "m" |
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104 | end if |
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105 | else |
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106 | if ( xs .eq. xe ) then |
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107 | data = raw_data(0,:,:,0) |
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108 | x_axis = "y" |
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109 | y_axis = "z" |
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110 | plane = "x" |
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111 | if ( raw_data&x .eq. -1 ) then |
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112 | level = "-average" |
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113 | else |
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114 | level = "=" + raw_data&x + "m" |
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115 | end if |
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116 | end if |
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117 | end if |
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118 | end if |
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119 | delete( raw_data ) |
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120 | ; |
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121 | ; set up resources |
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122 | cs_res = True |
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123 | cs_res@gsnMaximize = True |
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124 | cs_res@gsnPaperOrientation = "portrait" |
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125 | cs_res@gsnPaperWidth = 8.27 |
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126 | cs_res@gsnPaperHeight = 11.69 |
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127 | cs_res@gsnPaperMargin = 0.79 |
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128 | cs_res@tiMainFuncCode = "~" |
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129 | cs_res@tiMainFontHeightF = 0.015 |
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130 | cs_res@tiMainString = f@title |
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131 | cs_res@tiXAxisString = x_axis + " [m]" |
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132 | cs_res@tiYAxisString = y_axis + " [m]" |
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133 | ; cs_res@gsnLeftString = "" ; gsn_csm_* scripts use default data |
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134 | cs_res@gsnCenterString = "t=" + time + "s " + plane + level |
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135 | ; cs_res@gsnRightString = "" ; gsn_csm_* scripts use default data |
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136 | cs_res@tmXBMode ="Automatic" |
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137 | cs_res@tmYLMode ="Automatic" |
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138 | if ( mode .eq. "Fill" ) then |
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139 | cs_res@cnFillOn = True |
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140 | cs_res@gsnSpreadColors = True |
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141 | cs_res@cnFillMode = fill_mode |
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142 | cs_res@lbOrientation = "Vertical" ; vertical label bar |
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143 | cs_res@cnLinesOn = False |
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144 | cs_res@cnLineLabelsOn = False |
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145 | end if |
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146 | ; |
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147 | ; data output |
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148 | plot_x11 = gsn_csm_contour(wks_x11,data,cs_res) |
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149 | if ( isvar("fo") ) then |
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150 | plot_pdf = gsn_csm_contour(wks_pdf,data,cs_res) |
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151 | plot_eps = gsn_csm_contour(wks_eps,data,cs_res) |
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152 | plot_ps = gsn_csm_contour(wks_ps, data,cs_res) |
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153 | end if |
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154 | end |
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