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3<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
4  <head>
5    <title>compute_fromreg_bilinear_weigaddr.pro (SAXO Documentation Assistant)</title>
6  </head>
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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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55
56
57    <h1><font size="-2">Interpolation/</font></h1>
58    <h2>compute_fromreg_bilinear_weigaddr.pro</h2>
59
60    <dl>
61    </dl>
62
63   
64 compute the weight and address needed to interpolate data from a
65 "regular grid" to any grid using the bilinear method
66
67
68   
69
70     
71      <a name="#_compute_fromreg_bilinear_weigaddr"></a>
72
73      <h2>compute_fromreg_bilinear_weigaddr  <font size="-1" color="#006633"> 
74 Interpolation
75</font></h2>
76
77      <p><font face="Courier">compute_fromreg_bilinear_weigaddr<i>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_alonin">alonin</a>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_alatin">alatin</a>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_olonin">olonin</a>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_olat">olat</a>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_weig">weig</a>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_addr">addr</a></i>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_NONORTHERNLINE">NONORTHERNLINE</a>=<i>NONORTHERNLINE</i>, <a href="#_compute_fromreg_bilinear_weigaddr_keyword_NOSOUTHERNLINE">NOSOUTHERNLINE</a>=<i>NOSOUTHERNLINE</i></font></p>
78
79   
80
81   
82
83   
84    <h3>Parameters</h3>
85   
86
87    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_alonin"></a>
88    <h4>alonin&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
89      <font size="-1" color="#006633">in</font>
90     
91     
92      <font size="-1" color="#006633">required</font>
93     
94     
95     
96     
97    </h4>
98
99   
100 longitude of the input data
101
102   
103
104    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_alatin"></a>
105    <h4>alatin&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
106      <font size="-1" color="#006633">in</font>
107     
108     
109      <font size="-1" color="#006633">required</font>
110     
111     
112     
113     
114    </h4>
115
116   
117 latitude of the input data
118
119   
120
121    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_olonin"></a>
122    <h4>olonin&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
123      <font size="-1" color="#006633">in</font>
124     
125     
126      <font size="-1" color="#006633">required</font>
127     
128     
129     
130     
131    </h4>
132
133   
134 longitude of the output data
135
136   
137
138    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_olat"></a>
139    <h4>olat&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
140      <font size="-1" color="#006633">in</font>
141     
142     
143      <font size="-1" color="#006633">required</font>
144     
145     
146     
147     
148    </h4>
149
150   
151 latitude of the output data
152
153   
154
155    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_weig"></a>
156    <h4>weig&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
157     
158      <font size="-1" color="#006633">out</font>
159     
160     
161     
162     
163     
164     
165    </h4>
166
167   
168   
169
170    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_addr"></a>
171    <h4>addr&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
172     
173      <font size="-1" color="#006633">out</font>
174     
175     
176     
177     
178     
179     
180    </h4>
181
182   
183 2D arrays, weig and addr are the weight and addresses used to
184 perform the interpolation:
185  dataout = total(weig*datain[addr], 1)
186  dataout = reform(dataout, jpio, jpjo, /over)
187
188   
189   
190
191   
192    <h3>Keywords</h3>
193
194   
195    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_NONORTHERNLINE"></a>
196    <h4>NONORTHERNLINE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
197     
198     
199     
200     
201     
202     
203     
204     
205    </h4>
206
207   
208 activate if you don't want to take into
209 account the northen line of the input data when performing the interpolation.
210
211   
212    <a name="#_compute_fromreg_bilinear_weigaddr_keyword_NOSOUTHERNLINE"></a>
213    <h4>NOSOUTHERNLINE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
214     
215     
216     
217     
218     
219     
220     
221     
222    </h4>
223
224   
225 activate if you don't want to take into
226 account the southern line of the input data when performing the interpolation.
227
228   
229   
230
231   
232    <h3>Version history</h3>
233   
234    <h4>Version</h4> $Id: compute_fromreg_bilinear_weigaddr.pro 157 2006-08-21 09:01:50Z navarro $
235
236    <h4>History</h4>
237  November 2005: Sebastien Masson (smasson@lodyc.jussieu.fr)
238
239   
240
241    <h3>Known issues</h3>
242   
243   
244   
245    <h4>Restrictions</h4>
246  - the input grid must be a "regular grid", defined as a grid for which each
247  longitudes lines have the same latitude and each latitudes columns have the
248  same longitude.
249  - We supposed the data are located on a sphere, with a periodicity along
250  the longitude.
251  - points located out of the southern and northern boundaries are interpolated
252  using a linear interpolation only along the longitudinal direction.
253
254
255   
256   
257   
258   
259   
260   
261   
262
263    <font size="-3"><p>&nbsp;</p></font>
264    <hr size="1" color="#CCCCCC"/>
265     
266
267   
268
269    <p><font color="gray" size="-3">&nbsp;&nbsp;Produced by IDLdoc 2.0 on Tue Aug 29 14:49:15 2006.</font></p>
270
271  </body>
272</html>
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