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<div class="moz-cite-prefix">On 28/02/2013 4:31 p.m., 杨华杰 wrote:<br>
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<blockquote
cite="mid:CACx=zn8foWacNnRuPYYBjtUQh4BG1+6_2Bx0uthwyv6LK_5UMw@mail.gmail.com"
type="cite">
<div dir="ltr">How to <span
style="font-family:arial,sans-serif;font-size:13px"><font
color="#ff0000">map them</font>?</span></div>
</blockquote>
<br>
I would presume that you are creating the vectors in OL. However, it
also appears that the process is creating longitudes greater than
180. Before the save operation, you should iterate over the
coordinates to save converting these into the range -180:180<br>
(ie if (lon>180) lon = lon - 360; )<br>
<br>
If you are unfortunate enough to be dealing with vectors that cross
the 180, then you may expect some grief depending on your backend
system. Most systems are conceived on a flat earth with the 180 line
conveniently far from most developers. Support for the 180 line can
be an ugly hack if supported at all.<br>
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