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3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
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4 | <head> |
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5 | <title>neighbor.pro (SAXO Documentation Assistant)</title> |
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6 | </head> |
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47 | <td width="10%"> |
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48 | <a href="map_npoints.html"><img src="./../prev.gif" border="0" alt="Previous"></a></td> |
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49 | <td width="80%" align="center" valign="center"> |
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50 | <font size=-1><i>SAXO Documentation Assistant</i>: <a href="./../home.html">Overview</a></font></td> |
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51 | <td width="10%" align="right"> |
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52 | <a href="quadrilateral2square.html"><img src="./../next.gif" border="0" alt="Next"></a></td> |
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53 | </tr> |
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54 | </table> |
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55 | |
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56 | |
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57 | <h1><font size="-2">Interpolation/</font></h1> |
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58 | <h2>neighbor.pro</h2> |
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59 | |
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60 | <dl> |
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61 | </dl> |
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62 | |
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63 | |
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64 | find the closest point of (P0) within a list of np1 points |
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65 | P1 which can be on a sphere |
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66 | |
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67 | |
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68 | |
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69 | |
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70 | |
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71 | <a name="#_neighbor"></a> |
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72 | |
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73 | <h2>neighbor <font size="-1" color="#006633"> |
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74 | Maps |
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75 | </font></h2> |
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76 | |
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77 | <p><font face="Courier"><i>result = </i>neighbor(<i><a href="#_neighbor_keyword_p0lon">p0lon</a>, <a href="#_neighbor_keyword_p0lat">p0lat</a>[, <a href="#_neighbor_keyword_neighlon">neighlon</a>][, <a href="#_neighbor_keyword_neighlat">neighlat</a>]</i>, <a href="#_neighbor_keyword_SPHERE">SPHERE</a>=<i>SPHERE</i>, <a href="#_neighbor_keyword_DISTANCE">DISTANCE</a>=<i>DISTANCE</i>, <a href="#_neighbor_keyword_RADIANS">RADIANS</a>=<i>RADIANS</i>)</font></p> |
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78 | |
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79 | |
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80 | |
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81 | |
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82 | <h3>Return value</h3> |
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83 | index giving the P1[index] point that is the closest point of (P0) |
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84 | |
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85 | |
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86 | |
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87 | <h3>Parameters</h3> |
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88 | |
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89 | |
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90 | <a name="#_neighbor_keyword_p0lon"></a> |
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91 | <h4>p0lon |
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92 | <font size="-1" color="#006633">in</font> |
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93 | |
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94 | |
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95 | <font size="-1" color="#006633">required</font> |
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96 | |
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97 | <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>scalar</i></font> |
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98 | |
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99 | |
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100 | </h4> |
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101 | |
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102 | |
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103 | longitudes of point P0. |
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104 | |
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105 | |
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106 | |
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107 | <a name="#_neighbor_keyword_p0lat"></a> |
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108 | <h4>p0lat |
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109 | <font size="-1" color="#006633">in</font> |
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110 | |
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111 | |
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112 | <font size="-1" color="#006633">required</font> |
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113 | |
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114 | <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>scalar</i></font> |
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115 | |
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116 | |
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117 | </h4> |
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118 | |
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119 | |
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120 | latitudes of point P0. |
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121 | |
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122 | |
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123 | |
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124 | <a name="#_neighbor_keyword_neighlon"></a> |
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125 | <h4>neighlon |
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126 | <font size="-1" color="#006633">in</font> |
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127 | |
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128 | <font size="-1" color="#006633">optional</font> |
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129 | |
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130 | |
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131 | |
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132 | |
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133 | |
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134 | </h4> |
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135 | |
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136 | |
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137 | |
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138 | |
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139 | |
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140 | <a name="#_neighbor_keyword_neighlat"></a> |
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141 | <h4>neighlat |
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142 | <font size="-1" color="#006633">in</font> |
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143 | |
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144 | <font size="-1" color="#006633">optional</font> |
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145 | |
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146 | |
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147 | |
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148 | |
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149 | |
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150 | </h4> |
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151 | |
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153 | |
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156 | |
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157 | |
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158 | <h3>Keywords</h3> |
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159 | |
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160 | |
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161 | <a name="#_neighbor_keyword_SPHERE"></a> |
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162 | <h4>SPHERE |
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163 | |
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164 | |
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165 | |
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166 | |
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167 | |
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168 | |
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169 | |
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170 | |
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171 | </h4> |
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172 | |
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173 | |
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174 | to activate if points are located on a sphere. |
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175 | |
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176 | |
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177 | <a name="#_neighbor_keyword_DISTANCE"></a> |
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178 | <h4>DISTANCE |
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179 | |
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180 | |
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181 | |
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182 | |
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183 | |
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184 | |
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185 | |
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186 | |
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187 | </h4> |
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188 | |
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189 | |
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190 | dis, to get back the distances between P0 and the np1 points P1 in the |
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191 | variable dis. |
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192 | |
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193 | |
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194 | <a name="#_neighbor_keyword_RADIANS"></a> |
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195 | <h4>RADIANS |
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196 | |
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197 | |
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198 | |
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199 | |
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202 | |
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203 | |
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204 | </h4> |
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205 | |
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206 | |
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207 | if set, inputs and angular outputs are in radians, otherwise degrees. |
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208 | |
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209 | |
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211 | |
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212 | <h3>Examples</h3><pre> |
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213 | |
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214 | IDL> print, neighbor(-105.15,40.02,[-0.07,100,50],[51.30,20,0], $ |
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215 | distance=dis) |
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216 | 0 |
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217 | IDL> print, dis |
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218 | 105.684 206.125 160.228 |
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219 | |
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220 | </pre><h3>Version history</h3> |
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221 | |
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222 | <h4>Version</h4> |
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223 | $Id: neighbor.pro 371 2008-08-07 09:32:02Z pinsard $ |
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224 | |
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225 | <h4>History</h4> |
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226 | Sebastien Masson (smasson@lodyc.jussieu.fr) |
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227 | October 2003 |
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245 | <font size="-3"><p> </p></font> |
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246 | <hr size="1" color="#CCCCCC"/> |
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251 | <p><font color="gray" size="-3"> Produced by IDLdoc 2.0.</font></p> |
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252 | |
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253 | </body> |
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254 | </html> |
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