Alberto,
I'm not sure if this comment is a "bug" report or documentation of
performance.
A clockwise rotation isn't wrong, if it's understood and documented.
From my perspective (wind/weather) an anti-clock rotation, which you're
presenting as "right" is counterintuitive. Although I would prefer to
see the rotation origin start at 'north' it does not pose a serious
problem, as I know what the rule is, and it is invariant.
gerry
Alberto Poggi wrote:
Hi.
Let me tell you about an issue of rotation of the vector symbols. I
found that in mapserver the rotation of these symbols does not follow
the classic rules that provide for the starting rotation in sequence
from east to the north, west and south. I published my work with
PMAPPER and MAPSERVER and I noticed that the rotation is done on the
other hand (east, south, west and north), and only on symbols of a
vector. This problem on the labelling does not exist and the rotation
is correct.
The layer referenced for symbol is a postgis table that contains a
field "rotazione" used by MapServer for the rotation of symbols. The
display of symbols is right but the rotation is done wrong.
This is the definition of my symbol:
SYMBOL
NAME "valvola"
TYPE vector
POINTS
0 0
1.5 1
1.5 0
0 1
0 0
END
FILLED TRUE
END
and this is the notation in the mapfile:
LAYER
NAME "Valvole"
TYPE POINT
CONNECTIONTYPE postgis
CONNECTION "user=****** password=***** dbname=ACQUA host=localhost"
DATA "the_geom FROM valvole"
STATUS DEFAULT
MAXSCALE 5001
TOLERANCE 10
TOLERANCEUNITS pixels
PROJECTION
"init=epsg:32632"
END
METADATA
"DESCRIPTION" "Valvole"
"RESULT_FIELDS" "comune,localita"
"RESULT_HEADERS" "Comune,Località"
"LAYER_ENCODING" "UTF-8"
"ows_title" "Dati valvole"
END # Metadata
CLASS
NAME "Valvole"
STYLE
SYMBOL 'valvola'
COLOR 0 255 255
OUTLINECOLOR 0 0 0
ANGLE [rotazione]
SIZE 8
END
END
TEMPLATE void
END
It's me that something wrong or is a known problem? Thank you.
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Gerry Creager -- [EMAIL PROTECTED]
Texas Mesonet -- AATLT, Texas A&M University
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