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On 11-10-23 04:07 PM, Mark Maunder wrote:<br>
<br>
<br>
When I developed ADMB Griewank wanted me to make the copy
constructor for<br>
dvariables to be a deep copy. This introduced all kinds of technical
difficulties<br>
(hence the exestence of prevariables). It did not seem to have any
real advantage.<br>
So for df1b2variables I went back to shallow copies. The only thing
you need to<br>
lnow is that as you discovered <br>
<br>
df1b2variable x =y;<br>
<br>
means that x and y are the same. This is already the case for
dvar_vectors.<br>
<blockquote
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<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">See below<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";">From:</span></b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";"> Richard
Bian [<a class="moz-txt-link-freetext" href="mailto:r.bian@niwa.co.nz">mailto:r.bian@niwa.co.nz</a>]
<br>
<b>Sent:</b> Sunday, October 23, 2011 2:49 PM<br>
<b>To:</b> Mark Maunder<br>
<b>Subject:</b> ADMB-RE<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";">Hi Mark,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";">When I code my model, I
noticed something interesting in ADMB-RE. Assuming x is a
dvariable, if I declare another dvariable y this way,
dvariable y=x; then when I change y, x will be changed in
the RE round, but not in ordinary ADMB round. I guess when
ADMB-RE converts the tpl to cpp in the df1b2_parameters
functions, it declares y as x's reference rather than an
normal variable. I didn't see this mentioned in the
manual, so I think I'd let you know about this. <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";">Regards,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";">Richard<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";">Richard Bian<br>
National Institute of Water & Atmospheric Research<br>
41 Market Place<br>
Auckland Central 1010, New Zealand<br>
Tel: +64 9 375 2054 Fax: +64 9 375 2051<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin: 0in 0in 0.0001pt;"><span
style="font-size: 10pt; font-family: "Segoe
UI","sans-serif";">Please consider the
environment before printing this email.<br>
<br>
NIWA is the trading name of the National Institute of
Water & Atmospheric Research Ltd.
<o:p></o:p></span></p>
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