<div dir="ltr">Oops! I guess my comment was not offline. Oh well! D<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 30, 2016 at 7:09 AM, Dennis Shea <span dir="ltr"><<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">offline from ncl-talk<br><br>re my comment: <br><span class=""><br><div>I am not sure why you want to rotate.<br></div></span><div><span class="">The 1st two modes look very distinct.<br><br></span>===<br><br></div><div>Deriving a "global" eof is rather unusual for ocean grids. The atmosphere is 'continuous'. The oceans are 'discontinuous' due to the continents. The EOFs may be though of as orthogonal structures that result from covariances. Deriving a 'global' EOF is implicitly 'saying' that SST variations in the Kuroshio may be related to the Gulf Stream.<br><br></div><div>An Example of using an EOF analysis over the ocean is:<br><br><a href="http://www.ncl.ucar.edu/Applications/eof.shtml" target="_blank">http://www.ncl.ucar.edu/Applications/eof.shtml</a><br></div><div>Example 3<br><br></div><div>Good Luck<br></div><div><br></div><div><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 29, 2016 at 4:17 PM, Dennis Shea <span dir="ltr"><<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Hi Allison,<br><br></div>Can you please try the attached? <br><br></div><div>I am not sure why you want to rotate.<br></div><div>The 1st two modes look very distinct.<br></div><div><br></div><div>I did not plot anything. I'll let that to you<br><br></div><div><br></div>THX<span><font color="#888888"><br></font></span></div><span><font color="#888888">D<br></font></span></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Jun 28, 2016 at 8:07 AM, Allison Serakos <span dir="ltr"><<a href="mailto:sera0021@umn.edu" target="_blank">sera0021@umn.edu</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">script name: ncl-talk_reof.ncl<div>data file name: HadISST_sst.nc.gz</div><div><br></div><div>Thank you,</div><div>Allison</div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jun 27, 2016 at 1:49 PM, Allison Serakos <span dir="ltr"><<a href="mailto:sera0021@umn.edu" target="_blank">sera0021@umn.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">
<p class="MsoNormal">Hello,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I am using the eofunc_varimax_Wrap function to analyze global
rotated EOFs produced from the eofunc_Wrap function. However, when I run my script,
it hangs when it reaches the eofunc_varimax_Wrap function. The script does not
finish and I get no error message. </p>
<p class="MsoNormal"><span style="color:black"> </span></p>
<p class="MsoNormal"><span style="color:black">The dataset that I am using is the </span>HadISST
1.1 monthly average sea surface temperature<span style="color:black"> dataset.
It is a 3-dimensional (time, latitude, longitude) global 1</span><span style="font-family:Symbol;color:black">°</span><span style="color:black"> x 1</span><span style="font-family:Symbol;color:black">°</span><span style="color:black"> grid dataset with
1755 time values, 180 latitude, and 360 longitude. I produce annually averaged values
and spatially weighted it prior to the EOF analysis. </span></p>
<p class="MsoNormal"><span style="color:black"> </span></p>
<p class="MsoNormal">I have been using a Mac machine with NCL version 6.3.0 and a
Linux machine with NCL version 6.2.1 and the program hangs when conducting the
rotation. </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I tried running the script with global data for different
time periods (all between 113 and 102 years of global data) on both the Mac and
Linux machines <span style="background-image:initial;background-repeat:initial">and found that the function works only for some time periods and crashes
with others. These periods differ between the two Mac and Linux machines that I
used.</span><span style="font-size:10pt;font-family:Times"> </span>I also
tried reshaping the data from a 3D matrix to a 2D matrix using the reshape
function and combining the spatial components. In this situation, the rotation
output was still the same as above for the respective time periods and
machines. Additionally, I tried reducing the spatial domain and found that when
I reduce the latitude range (anything smaller than 69S<a name="m_4487261840879017929_m_-3064842492227950264_m_2278485676934046223_m_-7288369395758337668__GoBack"></a>-90N)
for any time period the script runs on both machines and the function does not
crash. <span style="font-size:10pt;font-family:Times"></span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I used ‘ncl –x’ to see if there is an error in my script,
but the script only crashes before the eofunc_varimax_Warp function with no
messages. When I run the script, NCL uses about 592.5MB of the 12GB of memory
on the Mac machine, so I do not believe this an issue of lack of memory space. </p>
<p class="MsoNormal"><span style="color:black"> </span></p>
<p class="MsoNormal"><span style="color:black">I am wondering if there is a known problem with
the eofunc_varimax_Wrap function? I am also wondering if you have any thoughts
as to why the function may be crashing under certain situations and not others?</span></p>
<p class="MsoNormal"><span style="color:black"> </span></p>
<p class="MsoNormal"><span style="color:black">Here is a copy of my EOF and Varimax Rotation
script:</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">;----------------------------------------------------------------
</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">;***** EOF *****</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">neval = 6</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">optEOF = True</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">optEOF@method =
"transpose"</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">optEOF@jopt = 0</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">eof =
eofunc_Wrap(av,neval,optEOF)</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">;***** VARIMAX ROTATION *****</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">eof_rot =
eofunc_varimax_Wrap(eof,-1)</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">eof_varimax_reorder(eof_rot)</span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Menlo Regular";color:black">;----------------------------------------------------------------</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="color:black"> </span></p>
<p class="MsoNormal"><span style="color:black">Thanks for your help in advance. </span></p>
<p class="MsoNormal"><span style="color:black"> </span></p>
<p class="MsoNormal"><span style="color:black">Kind regards,</span></p>
<p class="MsoNormal"><span style="color:black">Allison</span></p><span><font color="#888888">
<p class="MsoNormal"> </p>-- <br><div data-smartmail="gmail_signature"><div dir="ltr">Allison Serakos<div>Graduate Research Assistant</div><div>Department of Soil, Water, and Climate</div><div>University of Minnesota</div><div>1991 Upper Buford Circle, Rm S535</div><div>St. Paul, MN 55108</div></div></div>
</font></span></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div data-smartmail="gmail_signature"><div dir="ltr">Allison Serakos<div>Graduate Research Assistant</div><div>Department of Soil, Water, and Climate</div><div>University of Minnesota</div><div>1991 Upper Buford Circle, Rm S535</div><div>St. Paul, MN 55108</div></div></div>
</div>
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