<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Dear David,</span></div><div><br><span></span></div><div><span>I still have problem for plot. The original data is very large and I made the annual average (by using CDO) for making the file smaller, as the attached file.</span></div><div><span>The original file has rotated info as in the below, but the CDO-processed file doesn't have this info. Could you please help have a look at the data and give a plot suggestion?</span></div><div><span><br></span></div><div><span>Thanks so much!</span></div><div><span>Mark<br></span></div> <br><br>char rotated_pole ;<br> rotated_pole:long_name = "coordinates of the rotated North Pole"
;<br> rotated_pole:grid_mapping_name = "rotated_latitude_longitude" ;<br> rotated_pole:grid_north_pole_latitude = 39.25f ;<br> rotated_pole:grid_north_pole_longitude = -162.f ;<br><br><div><br></div> <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"> <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight: bold;">From:</span></b> David Brown <dbrown@ucar.edu><br> <b><span style="font-weight: bold;">To:</span></b> Mark Chan <cym263@yahoo.com> <br><b><span style="font-weight: bold;">Cc:</span></b> NCL Helpline <ncl-talk@ucar.edu>
<br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, February 28, 2012 6:18 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [ncl-talk] transform a projection into regular lat-lon<br> </font> </div> <br>
<div id="yiv1610121220"><div>Hi Mark,<div>Since the NCL is looking for the center longitude and you have the north pole, I think you should try setting mpCenterLatF to 39.25 - 90. Let us know if that does not produce a reasonable plot.</div><div> -dave</div><div><br></div><div><br><div><div>On Feb 28, 2012, at 6:11 AM, Mark Chan wrote:</div><br class="yiv1610121220Apple-interchange-newline"><blockquote type="cite"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: times new roman,new york,times,serif; font-size: 12pt;"><div><span>Dear Dennis,</span></div><div><br><span></span></div><div><span>Thanks a lot for your message. I wonder whether I could find the input data for the example in the website, so I could compare it with my data.</span></div><div><span>For instance, how could I get the parameters as in the below since my data has something like "</span>grid_north_pole_latitude : 39.25".</div><pre>
res@mpCenterLonF = lon2d@Longitude_of_southern_pole <br> res@mpCenterLatF = lon2d@Latitude_of_southern_pole + 90<br></pre><div>Thanks a lot again!</div><div><br></div><div>Mark<br></div> <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"> <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight: bold;">From:</span></b> Dennis Shea <<a rel="nofollow" ymailto="mailto:shea@ucar.edu" target="_blank" href="mailto:shea@ucar.edu">shea@ucar.edu</a>><br> <b><span style="font-weight: bold;">To:</span></b> Mark Chan <<a rel="nofollow" ymailto="mailto:cym263@yahoo.com" target="_blank" href="mailto:cym263@yahoo.com">cym263@yahoo.com</a>> <br><b><span style="font-weight: bold;">Cc:</span></b> "<a rel="nofollow" ymailto="mailto:ncl-talk@ucar.edu" target="_blank"
href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>" <<a rel="nofollow" ymailto="mailto:ncl-talk@ucar.edu" target="_blank" href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, February 27, 2012 5:39 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [ncl-talk] transform a projection into regular lat-lon<br> </font> </div> <br>
Does<br> http://www.ncl.ucar.edu/Applications/rotatedltln.shtml<br>answer your question. Please read the text.<br><br>Good Luck<br><br>On 2/27/12 3:31 AM, Mark Chan wrote:<br>> Dear NCL users,<br>><br>> I have a model output file having info as in the below. I was told it is<br>> "rotated projection" (I don't know exactly what it is).<br>> Could any one help give me a suggestion how to transform this data into<br>> regular lat-lon projection? The main issue is how to define its<br>> projection when reading it with NCL?<br>><br>> Thanks so much in advance!<br>> Mark Chan<br>><br>> ----------------------Data file info ------------------------<br>> dimensions:<br>> ncl_scalar = 1<br>> rlat = 92<br>> rlon = 108<br>> time = 87648 // unlimited<br>> height_2m = 1<br>> variables:<br>> double time ( time )<br>> standard_name : time<br>> units : seconds since 1989-01-01 00:00:00<br>>
calendar : standard<br>> float rlon ( rlon )<br>> standard_name : grid_longitude<br>> units : degrees<br>> float rlat ( rlat )<br>> standard_name : grid_latitude<br>> units : degrees<br>> float lon ( rlat, rlon )<br>> standard_name : longitude<br>> units : degrees_east<br>> float lat ( rlat, rlon )<br>> standard_name : latitude<br>> units : degrees_north<br>> float height_2m ( height_2m )<br>> long_name : height above surface<br>> units : m<br>> character rotated_pole ( ncl_scalar )<br>> long_name : coordinates of the rotated North Pole<br>> grid_mapping_name : rotated_latitude_longitude<br>> grid_north_pole_latitude : 39.25<br>> grid_north_pole_longitude : -162<br>> short tas ( time, height_2m, rlat, rlon )<br>> standard_name : air_temperature<br>> long_name : 2m temperature<br>> units : K<br>> coordinates : lon lat<br>> scale_factor : 0.004940663<br>> add_offset :
161.8932<br>> ====================================<br>><br>> -----------------Its grids info is<br>> as-----------------------------------------------------<br>> rlon = -10.445, -10.335, -10.225, -10.115, -10.005, -9.895, -9.785, -9.675,<br>> -9.565, -9.455, -9.345, -9.235, -9.125, -9.015, -8.905, -8.795, -8.685,<br>> -8.575, -8.465, -8.355, -8.245, -8.135, -8.025, -7.915, -7.805, -7.695,<br>> -7.585, -7.475, -7.365, -7.255, -7.145, -7.035, -6.925, -6.815, -6.705,<br>> -6.595, -6.485, -6.375, -6.265, -6.155, -6.045, -5.935, -5.825, -5.715,<br>> -5.605, -5.495, -5.385, -5.275, -5.165, -5.055, -4.945, -4.835, -4.725,<br>> -4.615, -4.505, -4.395, -4.285, -4.175, -4.065, -3.955, -3.845, -3.735,<br>> -3.625, -3.515, -3.405, -3.295, -3.185, -3.075, -2.965, -2.855, -2.745,<br>> -2.635, -2.525, -2.415, -2.305, -2.195, -2.085, -1.975, -1.865, -1.755,<br>> -1.645, -1.535, -1.425, -1.315, -1.205, -1.095, -0.985, -0.875,
-0.765,<br>> -0.655, -0.545, -0.435, -0.325, -0.215, -0.105, 0.005, 0.115, 0.225,<br>> 0.335, 0.445, 0.555, 0.665, 0.775, 0.885, 0.995, 1.105, 1.215, 1.325 ;<br>><br>> rlat = -8.855, -8.745, -8.635, -8.525, -8.415, -8.305, -8.195, -8.085,<br>> -7.975, -7.865, -7.755, -7.645, -7.535, -7.425, -7.315, -7.205, -7.095,<br>> -6.985, -6.875, -6.765, -6.655, -6.545, -6.435, -6.325, -6.215, -6.105,<br>> -5.995, -5.885, -5.775, -5.665, -5.555, -5.445, -5.335, -5.225, -5.115,<br>> -5.005, -4.895, -4.785, -4.675, -4.565, -4.455, -4.345, -4.235, -4.125,<br>> -4.015, -3.905, -3.795, -3.685, -3.575, -3.465, -3.355, -3.245, -3.135,<br>> -3.025, -2.915, -2.805, -2.695, -2.585, -2.475, -2.365, -2.255, -2.145,<br>> -2.035, -1.925, -1.815, -1.705, -1.595, -1.485, -1.375, -1.265, -1.155,<br>> -1.045, -0.935, -0.825, -0.715, -0.605, -0.495, -0.385, -0.275, -0.165,<br>> -0.055, 0.055, 0.165, 0.275, 0.385, 0.495, 0.605, 0.715, 0.825,
0.935,<br>> 1.045, 1.155 ;<br>><br>><br>><br>><br>> _______________________________________________<br>> ncl-talk mailing list<br>> List instructions, subscriber options, unsubscribe:<br>> <a rel="nofollow" target="_blank" href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><br><br><br> </div> </div> </div></div>_______________________________________________<br>ncl-talk mailing list<br>List instructions, subscriber options, unsubscribe:<br><a rel="nofollow" target="_blank" href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><br></blockquote></div><br></div></div></div><br><br> </div> </div> </div></body></html>