<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=us-ascii" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19120"></HEAD>
<BODY>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>Jeff,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>That is is the really hard part. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>Each item fx and obs describes a chunk of a time
series.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>One would have to manually calculate the start and end
dates</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>with respect to the reference dfile. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>If only (and I think Mike explained it a long time ago, and I
cannot find the</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>email) one could</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>set file 1</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>set t 2 34</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>define whatever</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>set dfile 2</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>set t 6 39</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>define theother</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>and happily combine whatever with
theother.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>Think about multimodel ensemble hindcast analysis, trying to
composit</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>observed phenomena with modelled phenomena that simply
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>don't happen simultaneously. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>All the best,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011><FONT color=#0000ff
size=2 face=Arial>Bernd.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=558105707-12092011></SPAN> </DIV>
<DIV><FONT color=#0000ff size=2 face=Arial></FONT> </DIV><!-- Converted from text/plain format -->
<P><FONT size=2>--<BR>Bernd Becker Climate Impacts Product
Development<BR>Met Office Hadley Centre FitzRoy Road
Exeter Devon EX1 3PB United Kingdom<BR>Tel.: +44 (0) 1392
884511 Fax: +44 (0)870 900 5050<BR>E-mail:bernd.becker@metoffice.gov.uk - <A
href="http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/bernd-becker">http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/bernd-becker</A><BR><A
href="http://www.metoffice.gov.uk/news/releases/archive/2011/weather-game">http://www.metoffice.gov.uk/news/releases/archive/2011/weather-game</A><BR></FONT></P>
<DIV> </DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> gradsusr-bounces@gradsusr.org
[mailto:gradsusr-bounces@gradsusr.org] <B>On Behalf Of </B>Jeffrey
Duda<BR><B>Sent:</B> 10 September 2011 18:41<BR><B>To:</B> GrADS Users
Forum<BR><B>Subject:</B> Re: [gradsusr] define variable independent of
time<BR></FONT><BR></DIV>
<DIV></DIV>You can reference the time of a variable when you use it in a
statement. For example, you could do<BR><BR>'d var.2(time=12Z01JAN1996) -
var.3(time=18Z13AUG2010)'<BR><BR>This should help you do what you want to
do.<BR><BR>Jeff Duda<BR><BR>
<DIV class=gmail_quote>On Sat, Sep 10, 2011 at 3:30 AM, Becker, Bernd <SPAN
dir=ltr><<A
href="mailto:bernd.becker@metoffice.gov.uk">bernd.becker@metoffice.gov.uk</A>></SPAN>
wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote><U></U>
<DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>Thanks
Arlindo,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>That would
be nice for single numbers.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>It as one
notch more elaborate:</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>
'set dfile 2'<BR> 'set t 2 33'<BR> 'define
obs = 'var'.2'<BR></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial> 'set
dfile 3'<BR> 'set t 2 33'<BR> 'define
fx = 'var'.3'<BR></FONT></SPAN></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>file 2 and 3 have different
time frames.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>d fx-obs </SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>fails. </SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>And it would be a real bummer
to have to calculate the times from one file relative</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>to the other
file.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>Compositing in this way would
be really hard. </SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN>Enjoy the
weekend!<BR>Bernd.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff size=2 face=Arial><SPAN></SPAN></FONT> </DIV>
<P><FONT size=2>--<BR>Bernd Becker Climate Impacts Product
Development<BR>Met Office Hadley Centre FitzRoy Road
Exeter Devon EX1 3PB United Kingdom<BR>Tel.: +44 (0) 1392
884511 Fax: <A href="tel:%2B44%20%280%29870%20900%205050" target=_blank
value="+448709005050">+44 (0)870 900 5050</A><BR><A
href="mailto:E-mail%3Abernd.becker@metoffice.gov.uk"
target=_blank>E-mail:bernd.becker@metoffice.gov.uk</A> - <A
href="http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/bernd-becker"
target=_blank>http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/bernd-becker</A><BR><A
href="http://www.metoffice.gov.uk/news/releases/archive/2011/weather-game"
target=_blank>http://www.metoffice.gov.uk/news/releases/archive/2011/weather-game</A><BR></FONT></P>
<DIV> </DIV><BR>
<DIV dir=ltr lang=en-us align=left>
<HR>
<FONT size=2 face=Tahoma><B>From:</B> <A
href="mailto:gradsusr-bounces@gradsusr.org"
target=_blank>gradsusr-bounces@gradsusr.org</A> [mailto:<A
href="mailto:gradsusr-bounces@gradsusr.org"
target=_blank>gradsusr-bounces@gradsusr.org</A>] <B>On Behalf Of </B>Arlindo
da Silva<BR><B>Sent:</B> 09 September 2011 17:40<BR><B>To:</B> GrADS Users
Forum<BR><B>Subject:</B> Re: [gradsusr] define variable independent of
time<BR></FONT><BR></DIV>
<DIV></DIV>On Fri, Sep 9, 2011 at 12:05 PM, Becker, Bernd <SPAN dir=ltr><<A
href="mailto:bernd.becker@metoffice.gov.uk"
target=_blank>bernd.becker@metoffice.gov.uk</A>></SPAN> wrote:<BR>
<DIV class=gmail_quote>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote><BR>Simple question,<BR>complicated answer:<BR><BR>I would
like to composite stuff from several files.<BR><BR>Each file has its
own time and date info in its own .ctl file.<BR><BR>How can I add elements
from different such files?<BR><BR>How can I break away from the strict
treatment of the time dimension in<BR>grads?<BR><BR>open file1.ctl<BR>define
a=ave(b,t=1,t=34)<BR>close 1<BR>open file2.ctl<BR>define c=
ave(b,t=3,t=9)<BR>close 2<BR>etc.<BR><BR>d a+c<BR>Cannot contour grid - all
undefined values<BR><BR></BLOCKQUOTE>
<DIV><BR></DIV>
<DIV>Try:</DIV>
<DIV><BR></DIV>
<DIV>d a(t=1)+c(t=1)</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV></DIV><FONT color=#888888>-- <BR>Arlindo da Silva<BR><A
href="mailto:dasilva@alum.mit.edu"
target=_blank>dasilva@alum.mit.edu</A><BR></FONT></DIV><BR>_______________________________________________<BR>gradsusr
mailing list<BR><A
href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</A><BR><A
href="http://gradsusr.org/mailman/listinfo/gradsusr"
target=_blank>http://gradsusr.org/mailman/listinfo/gradsusr</A><BR><BR></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Jeff Duda<BR>Iowa State University<BR>Meteorology Graduate
Student<BR><A href="http://www.meteor.iastate.edu/%7Ejdduda"
target=_blank>www.meteor.iastate.edu/~jdduda</A><BR></BODY></HTML>