Thanks Steve, that appears to work! I did not realize MapServer would on its own accord exclude the already CLASSified records from the second CLASS unless I explicitly instructed it what to exclude. I presumed it would just draw them again together with the rest. Nice!
Thanks! Now back to monitoring the brewing storm in the Gulf. > -----Original Message----- > From: Lime, Steve D (DNR) [mailto:[email protected]] > Sent: Friday, July 23, 2010 10:01 AM > To: Johan Forsman; [email protected] > Subject: RE: CLASS EXPRESSION regex help? > > Hi Johan: Are you looking for just two classes, one for records that start > with "LADE" and another for everything else? If so you can just omit the > expression from the second class and it will function as a default class > so everything that doesn't match the first will be assigned the second. > It's faster to execute than trying to expressly define a second regex. > Doesn't solve the regex error but then again you may not need to. > > Steve > > -----Original Message----- > From: [email protected] [mailto:mapserver-users- > [email protected]] On Behalf Of Johan Forsman > Sent: Friday, July 23, 2010 9:20 AM > To: [email protected] > Subject: [mapserver-users] CLASS EXPRESSION regex help? > > All: > > Regex neophyte, using MS 5.4.2 in FGS on Ubuntu Server 9.10, I wish to > render two classes based on content in a PostGIS field. > > For the first CLASS I want all records that start with "LADE", and using > > NAME "LADE" > EXPRESSION /^LADE.*/ > > appears to return the expected records. > > However, for the second CLASS I want all records that DO NOT start with > "LADE", but using > > NAME "Other" > EXPRESSION /^(?!LADE).*/ > > does not return any records and the log contains > > msEvalExpression() error: Regular expression error. Invalid regular > expression. > > Examples out in the ether all indicate that this "negative lookahead" is > supposed to do exactly what I want. > > What am I doing wrong in this instance? > > Thanks! > /Johan. > > ---------------------- > Johan Forsman > Geologist > Safe Drinking Water Program > Louisiana Department of Health and Hospitals > Office of Public Health > Telephone: 225.342.7309 > Telefax: 225.342.7303 > > > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
