Reprojection problem
Doyon, Jean-Francois
Jean-Francois.Doyon at CCRS.NRCAN.GC.CA
Mon Jan 23 12:12:27 PST 2006
Stephen,
I really should do that huh? :) Steve is aware of it, but yes, I'll whip
something up. The problem is that the circusmtances under which this
happens aren't always very clear ... I guess I'll use this last example as a
base.
J.F.
-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Stephen Woodbridge
Sent: January 23, 2006 3:04 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Reprojection problem
J.F.,
Did you write a bug up on this? I think it would worth while as this sounds
like a nasty problem to diagnose and it might not be so easy to find for the
next unsuspecting user.
-Steve W.
Ed McNierney wrote:
> Good job - I never would have figured that one out!
>
> - Ed
>
> -----Original Message-----
> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
> On Behalf Of Doyon, Jean-Francois
> Sent: Monday, January 23, 2006 2:16 PM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: Re: [UMN_MAPSERVER-USERS] Reprojection problem
>
> Problem solved!
>
> Turns out it was nother problem with point vs. annotation layers, and how
some combinations of configurations make mapserver die silently ...
>
> J.F.
>
> -----Original Message-----
> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
> On Behalf Of Doyon, Jean-Francois
> Sent: January 23, 2006 1:28 PM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: Re: [UMN_MAPSERVER-USERS] Reprojection problem
>
> Aha!
>
> It looks like the combination of cgi map_layer_class_expression and the
projection causes MS to generate an error!
>
> This is a bug :(
>
> J.F.
>
> -----Original Message-----
> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
> On Behalf Of Doyon, Jean-Francois
> Sent: January 23, 2006 1:17 PM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: Re: [UMN_MAPSERVER-USERS] Reprojection problem
>
> Here you go Ed ... I'm at a loss! Right now I have to think there's a
bizarre issue with the data, or maybe it's the fact I set the expression and
symbol via the URL? I 'll look into that last one ...
>
> The MAP PROJECTION:
>
> PROJECTION
> "init=epsg:42304"
> END
>
> The LAYER:
>
> LAYER
> NAME featureannotate
> TYPE point
> STATUS off
> DATA geo_np
> PROJECTION
> "init=epsg:4326"
> END
> METADATA
> LEGEND_GROUP "theme"
> GROUP_CONTROLLER "0"
> LAY_TITLE "Annotation layer for feature"
> CHECKABLE "0"
> LEGEND_ORDER "-1"
> END
> LABELITEM "FEATURE_NA"
> CLASSITEM "UNIQUE_KEY"
> CLASS
> EXPRESSION "w8g9q7regc87ctr8743tbca084ytc"
> SYMBOL -1
> SIZE 30
> COLOR 0 0 0
> LABEL
> TYPE TRUETYPE
> FONT "arial"
> SIZE 14
> COLOR 0 0 0
> OUTLINECOLOR 226 226 226
> POSITION ur
> FORCE TRUE
> END
> END
> END
>
> J.F.
>
> -----Original Message-----
> From: Ed McNierney [mailto:ed at topozone.com]
> Sent: January 23, 2006 12:43 PM
> To: Doyon, Jean-Francois; MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: RE: [UMN_MAPSERVER-USERS] Reprojection problem
>
> JF -
>
> That sounds very strange! Can you post the LAYER definition for the
troublesome layer, or at least the PROJECTION block for it?
>
> - Ed
>
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA 01863
> Phone: +1 (978) 251-4242
> Fax: +1 (978) 251-1396
> ed at topozone.com
>
> -----Original Message-----
> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
> On Behalf Of Doyon, Jean-Francois
> Sent: Monday, January 23, 2006 12:03 PM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: [UMN_MAPSERVER-USERS] Reprojection problem
>
> Hello,
>
> I recently upgraded from 3.6.6 to 4.6.1, and now I'm having problems with
a map that reprojects a single layer ...
>
> I have a MAP level PROJECTION object, and one layer with a different
PROJECTION than the others ... (The map is in an LCC projection, and the
layer in geographic).
>
> This used to work fine in 3.6.6, but now I get "msDrawMap(): Image
handling error. Failed to draw layer named 'featureannotate'." ... That
layer being the one in geographic that should be getting reprojected.
>
> If I take out the PROJECTION parameter of the layer, no errors! I
> tried moving it's definition with the layer, which didn't change
> anything ... I also tried using both epsg codes and in-line
> definitions, which also didn't help :(
>
> I was using PROJ 4.4.5 ... Upgraded to 4.4.9 ... That didn't help. I
re-compiled MS just to be safe, the problem remains ...
>
> I have a WMS server running off the same setup without complaints
(including reprojection). The shapefile looks ok, shpdump/shptest and
dbfdump didn't produce anything out of the ordinary ...
>
> Any ideas?
>
> Thanks!
>
> Jean-François Doyon
> Internet Service Development and Systems Support / Spécialiste de
> dèveloppements internet et soutien technique Canada Centre for Remote
> Sensing/Centre Canadien de télédétection Natural Resources
> Canada/Ressources Naturelles Canada http://atlas.gc.ca
> Tel./Tél.: (613) 992-4902
> Fax: (613) 947-2410
>
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