[mapserver-users] LABEL - POSITION and FONT Calculations

Donald Kerr donald.kerr at dkerr.co.uk
Mon Dec 29 16:57:07 EST 2008


Steve,

> Here's one:

> DATA "point FROM (select *, OID, substring(station from 2) as 
> station_no_char, (case when current is null or tstamp_24hr is 
> null or (now()-tstamp) > interval '1 day' then 0 when current > 
> tstamp_24hr then 1 when current < tstamp_24hr then 2 else 3 end) 
> as trend from station_interval_series where var=232) as foo 
> USING UNIQUE OID USING SRID=-1"
 
> I create a trend column based on time intervals. Output is 0, 1, or 3.

That'll do very nicely.

Many thanks.

Regards,

Donald



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