1 | ;+ |
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2 | PRO colorbar_idl, datain, colors, lablevels, datalevels, data=data, $ |
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3 | textcolor=textcolor, mincolor=mincolor, position=position |
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4 | ;-------------------------------------------------------------------- |
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5 | ; datain - gives the range of values which are represented by colors |
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6 | ; colors - color values |
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7 | ; lablevels - label levels |
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8 | ; |
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9 | ; Author: D. J. Lea Nov 2008 |
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10 | ;-------------------------------------------------------------------- |
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11 | |
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12 | ; keep current graphics keywords |
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13 | |
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14 | psave=!p |
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15 | xsave=!x |
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16 | ysize=!y |
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17 | |
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18 | if (n_elements(mincolor) eq 3) then $ |
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19 | TVLCT,mincolor(0),mincolor(1),mincolor(2),0 |
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20 | |
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21 | mx=max(datain,min=mn) |
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22 | |
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23 | normal=1 |
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24 | if (keyword_set(data)) then normal=0 |
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25 | |
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26 | |
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27 | if (keyword_set(data)) then begin ; data coords |
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28 | y1 = !y.crange(0)-0.1*(!y.crange(1)-!y.crange(0)) |
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29 | y2 = !y.crange(0)-0.05*(!y.crange(1)-!y.crange(0)) |
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30 | x1 = !x.crange(0)+0.1*(!x.crange(1)-!x.crange(0)) |
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31 | x2 = !x.crange(0)+0.9*(!x.crange(1)-!x.crange(0)) |
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32 | endif else begin ; normal coords |
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33 | y1 = !y.window(0)-0.11*(!y.window(1)-!y.window(0)) |
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34 | y2 = !y.window(0)-0.05*(!y.window(1)-!y.window(0)) |
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35 | ;; y1 = !y.window(0)+0.05*(!y.window(1)-!y.window(0)) |
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36 | ;; y2 = !y.window(0)+0.1*(!y.window(1)-!y.window(0)) |
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37 | x1 = !x.window(0)+0.076*(!x.window(1)-!x.window(0)) |
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38 | x2 = !x.window(0)+0.924*(!x.window(1)-!x.window(0)) |
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39 | endelse |
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40 | |
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41 | if (n_elements(position) eq 4) then begin |
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42 | coords=position |
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43 | endif else begin |
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44 | coords=[x1,y1,x2,y2] |
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45 | endelse |
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46 | |
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47 | print,'coords: ',coords |
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48 | print, 'normal: ',normal, ' data: ',keyword_set(data) |
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49 | |
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50 | ; nb = N_ELEMENTS(colors) |
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51 | ; x=coords(0)+(coords(2)-coords(0))*findgen(nb+1)/nb |
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52 | ; |
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53 | ; FOR i=0,nb-1 DO BEGIN |
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54 | ;; print,colors(i) |
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55 | ; polyfill, transpose([[x(i),x(i+1),x(i+1),x(i),x(i)],$ |
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56 | ; [coords(1),coords(1),coords(3),coords(3),coords(1)]]),$ |
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57 | ; color=colors(i), data=data, normal=normal |
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58 | ; ENDFOR |
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59 | |
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60 | ;Position is always in normal units will need to do a conversion if |
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61 | ; data units required... |
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62 | |
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63 | fill=0 |
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64 | cell_fill=1 |
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65 | |
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66 | maxdat=mx |
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67 | mindat=mn |
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68 | if (n_elements(datalevels) gt 0) then begin |
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69 | maxdat=max(datalevels,min=mindat) |
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70 | ; mindat=mindat+(1./!d.table_size)*(maxdat-mindat) |
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71 | ; print,'datalevels ',datalevels |
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72 | endif |
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73 | |
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74 | ; fix to prevent zero contour range |
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75 | if (maxdat eq mindat) then begin |
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76 | if (maxdat eq 0) then begin |
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77 | maxdat = maxdat + 1e-20 |
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78 | mindat = mindat - 1e-20 |
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79 | endif else begin |
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80 | maxdat = maxdat * 1.01 |
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81 | mindat = mindat * 0.99 |
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82 | if (maxdat lt mindat) then begin |
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83 | tmp = mindat |
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84 | mindat = maxdat |
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85 | maxdat = tmp |
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86 | endif |
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87 | endelse |
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88 | endif |
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89 | |
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90 | array1d=(findgen(!d.table_size+1))/!d.table_size*(maxdat-mindat)+mindat |
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91 | ; array1d=(findgen(!d.table_size+10)-10)/!d.table_size*(maxdat-mindat)+mindat |
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92 | |
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93 | print,'!d.table_size ',!d.table_size |
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94 | |
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95 | ; print,'array1d ',array1d |
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96 | print,'min array1d ',min(array1d), max(array1d) |
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97 | print,'datain ',datain |
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98 | print,'mx ',mx,' mn ',mn |
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99 | |
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100 | if (n_elements(datalevels) gt 0) then print, 'datalevels ', datalevels |
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101 | |
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102 | array2d=array1d#replicate(1,2) |
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103 | if (n_elements(datalevels) lt 2) then datalevels=array1d |
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104 | |
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105 | ; print, 'datalevels ', datalevels |
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106 | ; print,'cell_fill ',cell_fill |
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107 | |
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108 | TVLCT, R, G, B, /get |
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109 | TVLCT,R(1),G(1),B(1),0 ; bodge fix for wrong black contour |
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110 | |
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111 | if (n_elements(data) gt 0) then print,'data = ',data |
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112 | if (n_elements(normal) gt 0) then print,'normal = ',normal |
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113 | print,coords |
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114 | |
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115 | ; draw a few times to remove gaps |
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116 | nel=n_elements(datalevels) |
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117 | print, 'datalevels ',datalevels(0), datalevels(nel-1), nel |
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118 | print, 'array2d ',min(array2d), max(array2d) |
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119 | if (datalevels(0) lt datalevels(nel-1)) then begin |
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120 | for i=0,2 do begin |
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121 | contour, array2d, levels=datalevels, fill=fill, cell_fill=cell_fill, $ |
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122 | POSITION=coords, /noerase, xstyle=5, ystyle=5, data=data, normal=normal |
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123 | endfor |
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124 | endif |
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125 | |
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126 | TVLCT,R(0),G(0),B(0),0 |
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127 | |
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128 | numlablevels=n_elements(lablevels) |
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129 | sigfig=1 |
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130 | strlabs=strarr(numlablevels) |
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131 | |
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132 | repeat begin |
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133 | widstr=strtrim(string(sigfig+8),2) |
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134 | ; output 2 significant figures except if 0. |
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135 | |
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136 | for i = 0, numlablevels-1 do begin |
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137 | format='(g'+widstr+'.'+strtrim(string(sigfig),2)+')' |
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138 | strlabs(i)=strcompress(string(lablevels(i),format=format),/remove_all) |
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139 | |
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140 | ; print,i,'.',strlabs(i),'.',format |
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141 | |
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142 | if (strmid(strlabs(i),0,1) eq '0' or strmid(strlabs(i),0,2) eq '-0') then begin |
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143 | format='(g'+widstr+'.'+strtrim(string(sigfig-1),2)+')' |
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144 | strlabs(i)=strcompress(string(lablevels(i),format=format),/remove_all) |
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145 | ; print,i,'.',strlabs(i),'.',format |
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146 | endif |
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147 | |
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148 | ; print,i,'.',strlabs(i),'.',format |
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149 | |
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150 | ; trim out spaces |
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151 | strlabs(i)=strtrim(strlabs(i),2) |
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152 | |
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153 | strtemp=strlabs(i) |
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154 | ; strip off last two characters if there is 0 after the decimal place |
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155 | ; with a number thereafter |
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156 | ptpos=strpos(strtemp,'.0') |
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157 | len=strlen(strtemp) |
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158 | ; if ptpos gt 0 then print,ptpos,len |
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159 | if ptpos gt 0 and len-2 ge ptpos then begin |
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160 | strlabs(i)=strmid(strtemp,0,len-1) |
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161 | endif |
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162 | |
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163 | ;if the remaining last character is a point (.) then get rid of it |
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164 | ptpos=strpos(strlabs(i),'.') |
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165 | len=strlen(strlabs(i)) |
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166 | ; print,ptpos, len |
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167 | if ptpos gt 0 and ptpos eq len-1 then begin |
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168 | strlabs(i)=strmid(strlabs(i),0,len-1) |
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169 | endif |
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170 | |
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171 | endfor |
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172 | ; print,strlabs |
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173 | ; print,strlen(strlabs) |
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174 | sigfig=sigfig+1 |
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175 | whe=where(strpos(strlabs,'e') gt 0, numexps) |
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176 | ; print,'whe ',whe, numexps |
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177 | ; all labels should be unique |
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178 | ; should be all exps or none |
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179 | ; give up if sigfigs 255 |
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180 | endrep until (n_elements(unique(strlabs)) eq numlablevels $ |
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181 | and (numexps eq 0 or numexps eq numlablevels) $ |
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182 | or sigfig gt 255) |
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183 | |
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184 | pcharsize=!p.charsize |
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185 | if (pcharsize lt 1) then pcharsize=1 |
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186 | ; tolx=0.01*pcharsize*(!x.crange(1)-!x.crange(0)) |
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187 | tolx=0.01*(x2-x1) |
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188 | |
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189 | ypos = y1-0.02*pcharsize*(!y.crange(1)-!y.crange(0)) |
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190 | for i = 0, numlablevels-1 do begin |
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191 | ; xpos = x1 + float(i)/float(n_elements(lablevels)-1)*(x2-x1) |
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192 | xpos = x1 + (lablevels(i)-mn)/(mx-mn)*(x2-x1) ; position labels correctly relative |
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193 | |
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194 | if (xpos ge x1-tolx and xpos le x2+tolx) then begin ; don't print any labels off the edge |
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195 | |
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196 | ; xyouts, xpos, ypos, strcompress(string(lablevels(i),format='(f7.2)'),/remove_all), $ |
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197 | ; color=!d.table_size-1, data=data, normal=normal, align=0.5 |
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198 | |
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199 | if (n_elements(textcolor) eq 3) then $ |
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200 | TVLCT,textcolor(0),textcolor(1),textcolor(2),0 |
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201 | ; print,'xyouts ',xpos, ypos, ' ',strlabs(i) |
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202 | xyouts, xpos, ypos, strlabs(i), data=data, normal=normal, align=0.5 |
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203 | endif |
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204 | |
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205 | endfor |
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206 | |
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207 | ; restore graphics keywords |
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208 | !p=psave |
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209 | !x=xsave |
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210 | !y=ysize |
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211 | |
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212 | END |
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