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Hi Alex<br>
<br>
What version of PostGIS do U use?<br>
<br>
alex_chew a écrit :
<blockquote cite="mid45616203.000058.03001@bj163app93.163.com"
type="cite">Hi,there<br>
I tried to load all road polylines in box 104,30,106,32(EPSG:4326)
with sql:<br>
SELECT AsSVG(intersection(the_geom,GeometryFromText('POLYGON((104
30,106 30,106 32,104 32,104 30))',4326)),1,1) AS svg_geom FROM
road_polyline WHERE the_geom && setSRID('BOX3D(104 30, 106
32)'::box3d,4326)<br>
<br>
I got some results like,<br>
"M 104.1 -30.8 l 0 -0 0 -0 0 -0 -0 -0 -0 -0 -0 -0 0 -0 "<br>
"M 104.2 -30.8 l 0 0 0 0 0 0 "<br>
"M 104.2 -30.8 l 0 0 "<br>
"M 104.2 -30.8 l 0 0 0 0 "<br>
"M 104.1 -30.8 l 0 -0 0 -0 "<br>
"M 104.1 -30.8 l 0 0 0 0 "<br>
"M 104.2 -30.8 l 0 0 0 0 0 0 0 0 0 0 0 0 0 -0 0 0 0 0 "<br>
"M 104.1 -30.8 l 0 -0 "<br>
<br>
what does this mean? It should be something like,<br>
M 104.1 -30.8 l 104.* -30.* l p3x p3y l p4x p4y<br>
Why does there so many zero(0)?<br>
<br>
I cannot make it display on my SVG document.<br>
<br>
thanks in advance.<br>
alex<br>
<br>
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