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<DIV dir=ltr align=left><SPAN class=198020920-14082007><FONT face=Arial
color=#0000ff size=2>Wouldn't you want to return the average for month for that
particular site? None of your month subselects seem to group by station
id. Would seem to me logically you should add station_id to each of
your subselects, group by station_id as well as month and then your ON
clause would be month and station_id.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=198020920-14082007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=198020920-14082007><FONT face=Arial
color=#0000ff size=2>Hope that helps,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=198020920-14082007><FONT face=Arial
color=#0000ff size=2>Regina</FONT></SPAN></DIV>
<DIV dir=ltr align=left><BR></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B>
postgis-users-bounces@postgis.refractions.net
[mailto:postgis-users-bounces@postgis.refractions.net] <B>On Behalf Of </B>Kirk
Wythers<BR><B>Sent:</B> Tuesday, August 14, 2007 12:15 PM<BR><B>To:</B>
Discussion PostGIS Users<BR><B>Subject:</B> [postgis-users] monthly climate
query<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV style="MARGIN: 0px"><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px">I need some help
with rewriting a query. I have a query that dumps daily climate data, filling in
missing data with monthly averages (one line per
day). </SPAN></FONT><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px"></SPAN></FONT></DIV>
<DIV style="MARGIN: 0px"><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px"><BR
class=khtml-block-placeholder></SPAN></FONT></DIV>
<DIV style="MARGIN: 0px"><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px">I want to output
monthly averages (one line per month). I am having a hard time wrapping my head
around this. Particularly how to deal with the doy column (day of year). I have
tried several approaches and my forehead is starting to get my keyboard
bloody. </SPAN></FONT></DIV>
<DIV style="MARGIN: 0px"><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px"><BR
class=khtml-block-placeholder></SPAN></FONT></DIV>
<DIV style="MARGIN: 0px"><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px">Here is the daily
query:</SPAN></FONT></DIV>
<DIV style="MARGIN: 0px"><FONT class=Apple-style-span face="Lucida Grande"
size=3><SPAN class=Apple-style-span style="FONT-SIZE: 11px"><BR
class=khtml-block-placeholder></SPAN></FONT></DIV>
<DIV>SELECT CASE</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>WHEN
w.station_id = site_near.station_id THEN w.obs_id</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>ELSE
s.obs_id</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>END AS
obs_id,</DIV>
<DIV><SPAN class=Apple-tab-span
style="WHITE-SPACE: pre"></SPAN>site_near.station_id,</DIV>
<DIV><SPAN class=Apple-tab-span
style="WHITE-SPACE: pre"></SPAN>site_near.longname,</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>w.year,</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>w.doy,</DIV>
<DIV>--replace missing values (-999) with the monthly average</DIV>
<DIV> CASE w.tmax</DIV>
<DIV> WHEN -999 THEN avgtmax.avg</DIV>
<DIV> ELSE w.tmax</DIV>
<DIV> END,</DIV>
<DIV>CASE w.tmin</DIV>
<DIV> WHEN -999 THEN avgtmin.avg</DIV>
<DIV> ELSE w.tmin</DIV>
<DIV> END,</DIV>
<DIV>CASE s.par</DIV>
<DIV> WHEN -999 THEN avgpar.avg</DIV>
<DIV> ELSE s.par</DIV>
<DIV> END,</DIV>
<DIV>CASE w.precip</DIV>
<DIV> WHEN -999 THEN avgprecip.avg</DIV>
<DIV> ELSE w.precip</DIV>
<DIV> END</DIV>
<DIV>FROM site_near</DIV>
<DIV> INNER JOIN solar s</DIV>
<DIV> ON (site_near.ref_solar_station_id =
s.station_id</DIV>
<DIV> AND site_near.obs_year =
s.year)</DIV>
<DIV> INNER JOIN weather w</DIV>
<DIV> ON (site_near.ref_weather_station_id =
w.station_id</DIV>
<DIV> AND site_near.obs_year =
w.year</DIV>
<DIV> AND s.date = w.date)</DIV>
<DIV> INNER JOIN (SELECT MONTH,</DIV>
<DIV>
round(avg(tmax)::numeric, 2) AS avg</DIV>
<DIV>
FROM weather</DIV>
<DIV>
WHERE tmax != -999</DIV>
<DIV> GROUP
BY MONTH) AS avgtmax</DIV>
<DIV> ON (w.month = avgtmax.month)</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>INNER JOIN
(SELECT MONTH,</DIV>
<DIV>
round(avg(tmin)::numeric, 2) AS avg</DIV>
<DIV>
FROM weather</DIV>
<DIV>
WHERE tmin != -999</DIV>
<DIV> GROUP
BY MONTH) AS avgtmin</DIV>
<DIV> ON (w.month = avgtmin.month)</DIV>
<DIV> INNER JOIN (SELECT MONTH,</DIV>
<DIV>
round(avg(par)::numeric, 2) AS avg</DIV>
<DIV>
FROM solar</DIV>
<DIV>
WHERE par != -999</DIV>
<DIV> GROUP
BY MONTH) AS avgpar</DIV>
<DIV> ON (s.month = avgpar.month)</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>INNER JOIN
(SELECT MONTH,</DIV>
<DIV>
round(avg(precip)::numeric, 2) AS avg</DIV>
<DIV>
FROM weather</DIV>
<DIV>
WHERE precip != -999</DIV>
<DIV> GROUP
BY MONTH) AS avgprecip</DIV>
<DIV> ON (w.month = avgprecip.month)</DIV>
<DIV>--select station to output climate data by id number</DIV>
<DIV>WHERE w.station_id = 219101</DIV></BODY></HTML>
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