<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">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 href="mailto:awmiller@mit.edu" class="">awmiller@mit.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" class="">
<div bgcolor="#FFFFFF" text="#000000" class=""><p class=""><font size="+1" class=""><font face="Times New Roman, Times, serif" class="">Does
anyone have any feedback on how to access the condition
numbers that </font></font><font face="Times New Roman,
Times, serif" size="+1" class="">dgeevx_lapack should be able to
calculate?</font></p><p class=""><font face="Times New Roman, Times, serif" size="+1" class="">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="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><p class=""><font face="Times New Roman, Times, serif" class="">The argument I am
confused by is called "sense". The Fortran description reads
as follows:</font></p><p class=""><font face="Times New Roman, Times, serif" class="">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 face="Times New Roman, Times, serif" class="">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 face="Times New Roman, Times, serif" size="+1" class="">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 face="Times New Roman, Times, serif" size="+1" class="">evl
= dgeevx_lapack(M,"N","V","V","N",False)</font></p><p class=""><font face="Times New Roman, Times, serif" size="+1" class="">evl
= dgeevx_lapack(M,"N","V","V","E",False)</font></p><p class=""><font face="Times New Roman, Times, serif" size="+1" class="">evl
= dgeevx_lapack(M,"N","V","V","B",False)</font></p><p class=""><font face="Times New Roman, Times, serif" size="+1" class="">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 face="Times New Roman, Times, serif" size="+1" class="">How
can I access the reciprocal condition numbers? Is there
another ncl function I should use?</font></p><p class=""><font face="Times New Roman, Times, serif" size="+1" class="">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>
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