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<p><font size="+1"><font face="Times New Roman, Times, serif">Hi
Kevin,<br>
I attached a simple script to explain my problem. The script
does not produce any error messages. However changing the
"sense" argument doesn't seem to affect the result either. To
me the variables evl1 and evl2 look identical. So my question
is how can I access the reciprocal condition numbers that
should have been calculated in evl1.</font></font></p>
<p><font size="+1"><font face="Times New Roman, Times, serif">Thanks,<br>
Andy</font></font><br>
</p>
<div class="moz-cite-prefix">On 03/02/2017 12:36 PM, Kevin Hallock
wrote:<br>
</div>
<blockquote cite="mid:97B5D332-DC15-4942-ACD1-32A6EAF71B92@ucar.edu"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Hi Andy,
<div class=""><br class="">
</div>
<div class="">Do you have an example script in which you’re trying
to use dgeevx_lapack(), and if so would you be willing to share
it?</div>
<div class=""><br class="">
</div>
<div class="">Thanks,</div>
<div class="">Kevin</div>
<div class=""><br class="">
<div>
<blockquote type="cite" class="">
<div class="">On Feb 27, 2017, at 10:02 AM, Andy <<a
moz-do-not-send="true" href="mailto:awmiller@mit.edu"
class="">awmiller@mit.edu</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div bgcolor="#FFFFFF" text="#000000" class="">
<p class=""><font class="" size="+1"><font class=""
face="Times New Roman, Times, serif">Does anyone
have any feedback on how to access the condition
numbers that </font></font><font class=""
face="Times New Roman, Times, serif" size="+1">dgeevx_lapack
should be able to calculate?</font></p>
<p class=""><font class="" face="Times New Roman, Times,
serif" size="+1">Thanks<br class="">
Andy<br class="">
</font></p>
<div class="moz-cite-prefix">On 02/20/2017 06:20 PM,
Andy Miller wrote:<br class="">
</div>
<blockquote
cite="mid:8fa3d85b-8226-d5ec-2688-c3297bb515bf@mit.edu"
type="cite" class="">
<p class=""><font class="" face="Times New Roman,
Times, serif">The argument I am confused by is
called "sense". The Fortran description reads as
follows:</font></p>
<p class=""><font class="" face="Times New Roman,
Times, serif">SENSE (input) CHARACTER*1<br
class="">
* Determines which reciprocal condition
numbers are computed.<br class="">
* = 'N': None are computed;<br class="">
* = 'E': Computed for eigenvalues only;<br
class="">
* = 'V': Computed for right eigenvectors
only;<br class="">
* = 'B': Computed for eigenvalues and
right eigenvectors.<br class="">
* If SENSE = 'E' or 'B', both left and
right eigenvectors<br class="">
* must also be computed (JOBVL = 'V' and
JOBVR = 'V').<br class="">
</font></p>
<p class=""><font class="" face="Times New Roman,
Times, serif">The other arguments produce
reasonable results and, most importantly, change
the output in a way I can follow. Changing the 5th
or sense argument doesn't seem o have any effect.<br
class="">
<br class="">
</font></p>
<div class="moz-cite-prefix">On 2/20/2017 5:49 PM,
Dennis Shea wrote:<br class="">
</div>
<blockquote
cite="mid:8285BEBB-4838-4ED8-9945-5D1EF5D1B547@ucar.edu"
type="cite" class="">
<div class="">Offline. </div>
<div class="">I am out most of the week. I have no
access to a computer till later. Can u pls click
on the 'dgeevx' link in the function
documentation? This gives the Fortran
documentation. What arguments are you asking
about?<br class="">
<br class="">
Sent from my iPhone</div>
<div class=""><br class="">
On Feb 20, 2017, at 1:57 PM, Andy <<a
moz-do-not-send="true"
href="mailto:awmiller@mit.edu" class="">awmiller@mit.edu</a>>
wrote:<br class="">
<br class="">
</div>
<blockquote type="cite" class="">
<div class="">
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">Hello,<br
class="">
I am running NCL version 6.3.0 on a Linux
(Ubuntu) machine with a bash shell. I am
trying to use the dgeevx_lapack function for
the first time. The documentation includes
an option to calculate reciprocal condition
numbers. Enabling that option will not lead
to any error messages, but I also can't find
the result of that calculation. Running the
command in the following three versions:</font></p>
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">evl =
dgeevx_lapack(M,"N","V","V","N",False)</font></p>
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">evl =
dgeevx_lapack(M,"N","V","V","E",False)</font></p>
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">evl =
dgeevx_lapack(M,"N","V","V","B",False)</font></p>
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">for any given
matrix M results in variables evl that
contain the same number of values and are
seemingly identical otherwise, too.</font></p>
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">How can I
access the reciprocal condition numbers? Is
there another ncl function I should use?</font></p>
<p class=""><font class="" face="Times New
Roman, Times, serif" size="+1">Thanks for
your help,<br class="">
Andy</font></p>
<pre class="moz-signature" cols="72">--
Andy Miller
MIT PAOC PhD Candidate
77 Massachusetts Ave | 54-1715
Cambridge, MA 02139
Phone: 617-253-3715
Email: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:awmiller@mit.edu">awmiller@mit.edu</a></pre>
</div>
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