Applet/utility for drawing polygons?

[Michael Schulz]

Hi,

have a look at mapbender and its digitizing capabilities:
http://www.mapbender.org/
http://www.mapbender.org/index.php/Digitalisierung#ENGLISH

Try the link to the digitizing gui. Digitizing functionality includes
e.g. snapping to nodes and saving geometries via wfs-t
(geoserver->postgres).

Cheers, Michael


2007/1/7, Mike Conlow <mike_conlow at yahoo.com>:
>
> Hi: Does anyone know of a good applet or utility to allow clients to draw
> polygons on a map and feed them to PostGIS?
>
> 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...
>
> Thanks,
>
> Mike
>
> ----- Original Message ----
> From: Eduardo Zenaide <ezenaide at GMAIL.COM>
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Sent: Friday, January 5, 2007 12:50:07 PM
> Subject: [UMN_MAPSERVER-USERS] Expressions
>
> hi, all,
>
> i'm trying to understand how expressions work here.
> i have one layer with IDH_2000 class wich has lots of numerical values.
> i try using ("[IDH_2000]" <= /0.4/) and it returns the error:
>
>  msQueryByAttributes(): Search returned no results. No matching record(s)
> found.
>  msEvalExpression: Expression parser error. Failed to parse expression
>  msyyparse(): Expression parser error. syntax error
>
> i think i'm using the wrong syntax, but i've read
>  http://mapserver.gis.umn.edu/docs/howto/msexpressions
> and couldn't get it.
>
> if i do the same but using =~ works :P
> so, any clues?
>
> thanks!
>
> --
> Eduardo Zenaide
>
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-- 
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Michael Schulz
mschulz at webgis.de

in medias res
Gesellschaft für Informationstechnologie mbH

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Fax +49 (0)761 556959-6

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