Car track representation
Stéphane RIFF
stephane.riff at CERENE.FR
Tue Jul 12 03:36:58 EDT 2005
Hello,
I develop a little apps that shaow gps tracks on a map.
I want to show all the car track in a day. Each track have a different
color from the precedent.
To limit the number of classes i rotate on seven colors.
All track are classify by a start date and a stop date.
What i want to know is if i use the most efficient layer definition to
do that ???
Here the layer def in the mapfile :
LAYER
CLASSITEM "gps_date"
CONNECTION "host=localhost dbname=database1 port=5432 user=usr1
password=pwd1"
CONNECTIONTYPE POSTGIS
DATA "geom from history"
FILTER ( (natural_id=1002514153) AND (TIMESTAMP '2005-07-11
00:00:01',TIMESTAMP '2005-07-11 23:59:59') OVERLAPS (date,INTERVAL '0
days'))
GROUP "G.P.S"
LABELANGLEITEM "heading"
LABELCACHE OFF
METADATA
END
NAME "GPS_REM"
PROJECTION
"init=epsg:4326"
END
SIZEUNITS PIXELS
STATUS ON
TOLERANCE 6
TOLERANCEUNITS PIXELS
TRANSPARENCY 1000
TYPE ANNOTATION
UNITS METERS
CLASS
NAME "0"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 06:57:06' AND
'[gps_date]' < '2005-07-11 07:02:36')
OR ('[gps_date]' >= '2005-07-11
12:16:09' AND '[gps_date]' < '2005-07-11 12:18:49')
OR ('[gps_date]' >= '2005-07-11
17:29:04' AND '[gps_date]' < '2005-07-11 17:37:54')
OR ('[gps_date]' >= '2005-07-11
19:18:58' AND '[gps_date]' < '2005-07-11 19:19:13')
OR ('[gps_date]' >= '2005-07-11
20:24:25' AND '[gps_date]' < '2005-07-11 20:38:05') )
LABEL
ANGLE -21.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 0 128 128
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "1"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 07:10:19' AND
'[gps_date]' < '2005-07-11 07:48:45')
OR ('[gps_date]' >= '2005-07-11
12:18:49' AND '[gps_date]' < '2005-07-11 12:34:15')
OR ('[gps_date]' >= '2005-07-11
17:37:54' AND '[gps_date]' < '2005-07-11 18:00:53')
OR ('[gps_date]' >= '2005-07-11
19:29:20' AND '[gps_date]' < '2005-07-11 19:30:05')
OR ('[gps_date]' >= '2005-07-11
20:38:05' AND '[gps_date]' < '2005-07-11 20:44:50') )
LABEL
ANGLE -21.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 0 0 128
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "2"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 07:56:22' AND
'[gps_date]' < '2005-07-11 08:00:22')
OR ('[gps_date]' >= '2005-07-11
12:37:30' AND '[gps_date]' < '2005-07-11 12:44:30')
OR ('[gps_date]' >= '2005-07-11
18:00:53' AND '[gps_date]' < '2005-07-11 18:33:29')
OR ('[gps_date]' >= '2005-07-11
19:37:37' AND '[gps_date]' < '2005-07-11 19:39:52')
OR ('[gps_date]' >= '2005-07-11
20:44:50' AND '[gps_date]' < '2005-07-11 20:46:35') )
LABEL
ANGLE -168.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 128 0 128
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "3"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 08:02:07' AND
'[gps_date]' < '2005-07-11 08:19:54')
OR ('[gps_date]' >= '2005-07-11
15:21:47' AND '[gps_date]' < '2005-07-11 15:38:00')
OR ('[gps_date]' >= '2005-07-11
18:33:29' AND '[gps_date]' < '2005-07-11 18:42:53')
OR ('[gps_date]' >= '2005-07-11
19:52:07' AND '[gps_date]' < '2005-07-11 20:05:55')
OR ('[gps_date]' >= '2005-07-11
20:47:35' AND '[gps_date]' < '2005-07-11 20:47:50') )
LABEL
ANGLE -261.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 128 128 128
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "4"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 08:20:09' AND
'[gps_date]' < '2005-07-11 08:21:24')
OR ('[gps_date]' >= '2005-07-11
15:41:45' AND '[gps_date]' < '2005-07-11 16:53:00')
OR ('[gps_date]' >= '2005-07-11
18:42:53' AND '[gps_date]' < '2005-07-11 18:46:38')
OR ('[gps_date]' >= '2005-07-11
20:05:55' AND '[gps_date]' < '2005-07-11 20:10:40')
OR ('[gps_date]' >= '2005-07-11
21:24:58' AND '[gps_date]' < '2005-07-11 21:25:28') )
LABEL
ANGLE -286.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 0 0 0
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "5"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 08:46:27' AND
'[gps_date]' < '2005-07-11 09:15:20')
OR ('[gps_date]' >= '2005-07-11
16:53:00' AND '[gps_date]' < '2005-07-11 17:20:19')
OR ('[gps_date]' >= '2005-07-11
18:55:38' AND '[gps_date]' < '2005-07-11 18:59:08')
OR ('[gps_date]' >= '2005-07-11
20:10:40' AND '[gps_date]' < '2005-07-11 20:20:10') )
LABEL
ANGLE -11.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 128 128 0
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "6"
EXPRESSION ( ('[gps_date]' >= '2005-07-11 11:21:04' AND
'[gps_date]' < '2005-07-11 11:50:10')
OR ('[gps_date]' >= '2005-07-11
17:20:19' AND '[gps_date]' < '2005-07-11 17:29:04')
OR ('[gps_date]' >= '2005-07-11
19:12:43' AND '[gps_date]' < '2005-07-11 19:16:58')
OR ('[gps_date]' >= '2005-07-11
20:20:10' AND '[gps_date]' < '2005-07-11 20:21:25') )
LABEL
ANGLE -6.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 255 0 255
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
STYLE
COLOR 0 0 255
MAXSIZE 500
MINSIZE 1
SIZE 14
SYMBOL "point"
END
TEMPLATE "dummy"
TEXT "b"
END
CLASS
NAME "stop"
EXPRESSION ( ('[gps_date]' eq '2005-07-10 23:04:48') OR
('[gps_date]' eq '2005-07-11 07:02:36')
OR ('[gps_date]' eq '2005-07-11
07:48:45') OR ('[gps_date]' eq '2005-07-11 07:53:52')
OR ('[gps_date]' eq '2005-07-11
08:00:22') OR ('[gps_date]' eq '2005-07-11 08:19:54')
OR ('[gps_date]' eq '2005-07-11
08:21:24') OR ('[gps_date]' eq '2005-07-11 08:22:24')
OR ('[gps_date]' eq '2005-07-11
09:15:20') OR ('[gps_date]' eq '2005-07-11 11:50:10')
OR ('[gps_date]' eq '2005-07-11
12:34:15') OR ('[gps_date]' eq '2005-07-11 12:44:30')
OR ('[gps_date]' eq '2005-07-11
13:39:04') OR ('[gps_date]' eq '2005-07-11 15:38:00')
OR ('[gps_date]' eq '2005-07-11
18:46:38') OR ('[gps_date]' eq '2005-07-11 18:59:08')
OR ('[gps_date]' eq '2005-07-11
19:16:58') OR ('[gps_date]' eq '2005-07-11 19:19:13')
OR ('[gps_date]' eq '2005-07-11
19:30:05') OR ('[gps_date]' eq '2005-07-11 19:34:37')
OR ('[gps_date]' eq '2005-07-11
19:34:52') OR ('[gps_date]' eq '2005-07-11 19:39:52')
OR ('[gps_date]' eq '2005-07-11
19:41:52') OR ('[gps_date]' eq '2005-07-11 19:45:22')
OR ('[gps_date]' eq '2005-07-11
19:45:37') OR ('[gps_date]' eq '2005-07-11 19:48:37')
OR ('[gps_date]' eq '2005-07-11
19:48:52') OR ('[gps_date]' eq '2005-07-11 19:50:07')
OR ('[gps_date]' eq '2005-07-11
20:21:25') OR ('[gps_date]' eq '2005-07-11 20:23:55')
OR ('[gps_date]' eq '2005-07-11
20:46:35') OR ('[gps_date]' eq '2005-07-11 20:47:50')
OR ('[gps_date]' eq '2005-07-11
21:25:28') OR ('[gps_date]' eq '2005-07-11 22:38:02') )
LABEL
ANGLE -244.000000
ANTIALIAS TRUE
FONT Symbols
MAXSIZE 256
MINSIZE 4
SIZE 14
TYPE TRUETYPE
BUFFER 0
COLOR 255 0 0
FORCE TRUE
MINDISTANCE -1
MINFEATURESIZE -1
OFFSET 0 0
PARTIALS TRUE
POSITION CC
END
METADATA
END
TEMPLATE "dummy"
TEXT "f"
END
END
Maybe someone know a better definition to set Expression based on date ???
Thanks for reading
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