<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Hi: Does anyone know of a good applet or utility to allow clients to draw polygons on a map and feed them to PostGIS? <br><br>The issue I am trying to deal with: I have a lot of points and I need to let a client draw a polygon around a subset of those points and tag them with their name or a code or something. I think the easiest way is to pass the polygon to PostGIS...but if there are other ways that I haven't thought of...<br><br>Thanks,<br><br>Mike<br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: Eduardo Zenaide <ezenaide@GMAIL.COM><br>To: MAPSERVER-USERS@LISTS.UMN.EDU<br>Sent: Friday, January 5, 2007 12:50:07 PM<br>Subject:
[UMN_MAPSERVER-USERS] Expressions<br><br>hi, all,<br><br>i'm trying to understand how expressions work here.<br>i have one layer with IDH_2000 class wich has lots of numerical values.<br>i try using ("[IDH_2000]" <= /0.4/) and it returns the error:
<br><br>
msQueryByAttributes(): Search returned no results. No matching record(s) found. <br>
msEvalExpression: Expression parser error. Failed to parse expression <br>
msyyparse(): Expression parser error. syntax error<br><br>i think i'm using the wrong syntax, but i've read<br> <a rel="nofollow" target="_blank" href="http://mapserver.gis.umn.edu/docs/howto/msexpressions">http://mapserver.gis.umn.edu/docs/howto/msexpressions
</a><br>and couldn't get it.<br><br>if i do the same but using =~ works :P<br>so, any clues?<br><br>thanks!<br><br>-- <br>Eduardo Zenaide
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