So, I had not much more than just sent this when I discovered this:
http://osgeo-org.1560.x6.nabble.com/testing-CONNECTIONTYPE-UNION-td4254182.html
And, voila!
LAYER
NAME "dtk_skaermkort"
EXTENT 120000 5900000 1000000 6500000
PROJECTION
"init=epsg:25832"
END
STATUS ON
TYPE raster
PROCESSING "RESAMPLE=BILINEAR"
CONNECTIONTYPE UNION
CONNECTION "s3096,s1548,s774,s387,s193,s96,s48,s24,s12,s6,s3,s1,s07"
METADATA
"wms_title" "dtk_skaermkort"
"wms_srs" "epsg:25832"
"wms_group_title" "dtk_skaermkort"
END
END
appears to solve the issue.
For future reference,
/julian
----------------------------------------------------------------------
Message: 1
Date: Wed, 12 Sep 2018 14:43:09 +0000
From: Julian Hollingbery <jul...@northtech.dk>
To: "mapserver-users@lists.osgeo.org"
<mapserver-users@lists.osgeo.org>
Subject: [mapserver-users] LAYER with CONNECTIONTYPE UNION fails
catastrophically when asked to reproject
Message-ID:
<he1pr05mb3484a969a655fb32259e8c20bb...@he1pr05mb3484.eurprd05.prod.outlook.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi list,
I have run into something which puzzles me. I have configured a WMS using a MAP
file with three layers: dtk_skaermkort, dtk_skaermkort_3096 and
dtk_skaermkort_1548. The two latter expose TIFFs via a tile index in a shape
file. Data is in EPSG:25832. The first layer uses CONNECTIONTYPE UNION to show
the aggregate of the other two layers. This works *as long as I stay in the
native projection*. However, this fails:
http://172.30.229.42/fcgi-bin/mapserv.fcgi?map=/mapserver/config/mapfiler/WMS/topo_skaermkort/topo_skaermkort_mailinglist.map&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=-280235,5874930,649671,6549730&CRS=EPSG:25833&WIDTH=867&HEIGHT=629&LAYERS=dtk_skaermkort&STYLES=&FORMAT=image/png
With a horrible Apache HTTP 500 (which I can find no trace of in
/var/log/apache2/error.log...)
even though these succeed:
http://172.30.229.42/fcgi-bin/mapserv.fcgi?map=/mapserver/config/mapfiler/WMS/topo_skaermkort/topo_skaermkort_mailinglist.map&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=-280235,5874930,649671,6549730&CRS=EPSG:25833&WIDTH=867&HEIGHT=629&LAYERS=dtk_skaermkort_3096&STYLES=&FORMAT=image/png
and
http://172.30.229.42/fcgi-bin/mapserv.fcgi?map=/mapserver/config/mapfiler/WMS/topo_skaermkort/topo_skaermkort_mailinglist.map&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=-280235,5874930,649671,6549730&CRS=EPSG:25833&WIDTH=867&HEIGHT=629&LAYERS=dtk_skaermkort_1548&STYLES=&FORMAT=image/png
What have I done wrong?
Sample data: https://www.dropbox.com/s/gw8h8lrwwb0gltz/data.zip?dl=0
Map file:
MAP
NAME "topo_skaermkort"
EXTENT 120000 5900000 1000000 6500000
MAXSIZE 10000
STATUS ON
UNITS METERS
DEBUG 5
SHAPEPATH "/mapserver/data/skaermkort_ok"
CONFIG "ON_MISSING_DATA" "LOG"
CONFIG "MS_ERRORFILE" "maperror_topo_skaermkort_local.txt"
PROJECTION
"init=epsg:25832"
END
WEB
IMAGEPATH "/mapserver/data/skaermkort_ok/originalt/"
METADATA
"wms_title" "DTK/Skærmkort"
"wms_srs" "EPSG:4326 EPSG:4258 EPSG:25832 EPSG:25833 EPSG:32632
EPSG:32633 EPSG:4093 EPSG:4094 EPSG:4095 EPSG:4096 EPSG:3395 EPSG:3857"
"wms_bbox_extended" "TRUE"
"wms_getmap_formatlist" "image/jpeg,image/png"
"ows_enable_request" "* !GetFeatureInfo"
"wms_encoding" "utf-8"
END
END
LAYER
NAME "dtk_skaermkort"
EXTENT 120000 5900000 1000000 6500000
STATUS ON
TYPE raster
PROCESSING "RESAMPLE=BILINEAR"
CONNECTIONTYPE UNION
CONNECTION "s3096,s1548,s774,s387,s193,s96,s48,s24,s12,s6,s3,s1,s07"
METADATA
"wms_title" "dtk_skaermkort"
"wms_srs" "epsg:25832"
"wms_group_title" "dtk_skaermkort"
END
END
LAYER
GROUP "dtk_skaermkort"
NAME "s3096"
TILEINDEX "originalt/s3096/s3096x.shp"
TILEITEM "location"
EXTENT 120000 5900000 1000000 6500000
MINSCALEDENOM 1201748.867
MAXSCALEDENOM 30000000
STATUS OFF
TYPE raster
PROCESSING "RESAMPLE=BILINEAR"
METADATA
"wms_title" "s3096"
"wms_srs" "epsg:25832"
"wms_enable_request" "!GetCapabilities"
END
END
LAYER
GROUP "dtk_skaermkort"
NAME "s1548"
TILEINDEX "originalt/s1548/s1548x.shp"
TILEITEM "location"
EXTENT 120000 5900000 1000000 6500000
MINSCALEDENOM 600874.809
MAXSCALEDENOM 1201748.866
STATUS OFF
TYPE raster
PROCESSING "RESAMPLE=BILINEAR"
METADATA
"wms_title" "s1548"
"wms_srs" "epsg:25832"
"wms_enable_request" "!GetCapabilities"
END
END
END
Kind Regards,
/julian
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