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3<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
4  <head>
5    <title>angle.pro (SAXO Documentation Assistant)</title>
6  </head>
7
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9
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48<a href=""><img src="./../prev.gif" border="0" alt="Previous"></a></td>
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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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52<a href="clickincell.html"><img src="./../next.gif" border="0" alt="Next"></a></td>
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54</table>
55
56
57    <h1><font size="-2">Interpolation/</font></h1>
58    <h2>angle.pro</h2>
59
60    <dl>
61    </dl>
62
63   
64 north stereographic polar projection
65
66 Compute angles between grid lines and direction of the North pole
67(fom angle.F,v 2.2 in OPA8.2)
68
69
70   
71
72     
73      <a name="#_angle"></a>
74
75      <h2>angle  <font size="-1" color="#006633">
76 Interpolation
77</font></h2>
78
79      <p><font face="Courier">angle<i>, <a href="#_angle_keyword_fileocemesh">fileocemesh</a>, <a href="#_angle_keyword_gcosu">gcosu</a>, <a href="#_angle_keyword_gsinu">gsinu</a>, <a href="#_angle_keyword_gcosv">gcosv</a>, <a href="#_angle_keyword_gsinv">gsinv</a>, <a href="#_angle_keyword_gcost">gcost</a>, <a href="#_angle_keyword_gsint">gsint</a></i>, <a href="#_angle_keyword_IODIRECTORY">IODIRECTORY</a>=<i>scalar string</i>, <a href="#_angle_keyword_DOUBLE">DOUBLE</a>=<i>1 ou 2</i></font></p>
80
81   
82
83   
84
85   
86    <h3>Parameters</h3>
87   
88
89    <a name="#_angle_keyword_fileocemesh"></a>
90    <h4>fileocemesh&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
91      <font size="-1" color="#006633">in</font>
92     
93     
94      <font size="-1" color="#006633">required</font>
95     
96      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>scalar string</i></font>
97     
98     
99    </h4>
100
101   
102 a netcdf file that contains (at least) the following variables:
103        glamu, gphiu: longitudes and latitudes at U-points
104        glamv, gphiv: longitudes and latitudes at V-points
105        glamf, gphif: longitudes and latitudes at F-points
106
107   
108
109    <a name="#_angle_keyword_gcosu"></a>
110    <h4>gcosu&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
111     
112      <font size="-1" color="#006633">out</font>
113     
114     
115     
116      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>2d array</i></font>
117     
118     
119    </h4>
120
121   
122 cosinus of the angle between grid lines at U points and direction of the North pole
123
124   
125
126    <a name="#_angle_keyword_gsinu"></a>
127    <h4>gsinu&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
128     
129      <font size="-1" color="#006633">out</font>
130     
131     
132     
133      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>2d array</i></font>
134     
135     
136    </h4>
137
138   
139 sinus of the angle between grid lines at U points and direction of the North pole
140
141   
142
143    <a name="#_angle_keyword_gcosv"></a>
144    <h4>gcosv&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
145     
146      <font size="-1" color="#006633">out</font>
147     
148     
149     
150      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>2d array</i></font>
151     
152     
153    </h4>
154
155   
156 cosinus of the angle between grid lines at V points and direction of the North pole
157
158   
159
160    <a name="#_angle_keyword_gsinv"></a>
161    <h4>gsinv&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
162     
163      <font size="-1" color="#006633">out</font>
164     
165     
166     
167      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>2d array</i></font>
168     
169     
170    </h4>
171
172   
173 sinus of the angle between grid lines at V points and direction of the North pole
174
175   
176
177    <a name="#_angle_keyword_gcost"></a>
178    <h4>gcost&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
179     
180      <font size="-1" color="#006633">out</font>
181     
182     
183     
184      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>2d array</i></font>
185     
186     
187    </h4>
188
189   
190 cosinus of the angle between grid lines at T points and direction of the North pole
191
192   
193
194    <a name="#_angle_keyword_gsint"></a>
195    <h4>gsint&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
196     
197      <font size="-1" color="#006633">out</font>
198     
199     
200     
201      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>2d array</i></font>
202     
203     
204    </h4>
205
206   
207 sinus of the angle between grid lines at T points and direction of the North pole
208
209   
210   
211
212   
213    <h3>Keywords</h3>
214
215   
216    <a name="#_angle_keyword_IODIRECTORY"></a>
217    <h4>IODIRECTORY&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
218     
219     
220     
221     
222     
223      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>scalar string</i></font>
224      <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>''</i></font>
225     
226    </h4>
227
228   
229 the directory path where is located fileocemesh
230
231   
232    <a name="#_angle_keyword_DOUBLE"></a>
233    <h4>DOUBLE&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
234     
235     
236     
237     
238     
239      <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i>1 ou 2</i></font>
240      <font size="-1" color="#006633">default:</font> <font size="-1" color="#006633"><i>0</i></font>
241     
242    </h4>
243
244   
245 put 1 to use double precision (default is float)
246
247   
248   
249
250   
251    </pre><h3>Version history</h3>
252   
253    <h4>Version</h4>
254 $Id: angle.pro 232 2007-03-20 16:59:36Z pinsard $
255    <h4>History</h4>
256       Original :  96-07 (O. Marti)
257                   98-06 (G. Madec)
258       Feb 2005: IDL adaptation S. Masson
259
260   
261
262    <h3>Known issues</h3>
263   
264   
265   
266    <h4>Restrictions</h4>
267 to compute the lateral boundary conditions, we assume that:
268     (1) the first line is similar to the second line
269       =>    gcosu[*, 0] = gcosu[*, 1]
270       =>    gsinu[*, 0] = gsinu[*, 1]
271     (2) the grid follows OPA x periodicity rule, first column is
272     equal to the next to last column
273       =>    gcosv[0, *] = gcosv[jpj-2, *]
274       =>    gsinv[0, *] = gsinv[jpj-2, *]
275
276
277   
278   
279   
280   
281   
282   
283   
284
285    <font size="-3"><p>&nbsp;</p></font>
286    <hr size="1" color="#CCCCCC"/>
287     
288
289   
290
291    <p><font color="gray" size="-3">&nbsp;&nbsp;Produced by IDLdoc 2.0.</font></p>
292
293  </body>
294</html>
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