[mapserver-users] contour layers with tileindex issues

[Rahkonen Jukka (MML)]

Hi,

I would try to use TILEINDEX through OGR but that gets tricky because one LAYER probable can't have two CONNECTIONTYPEs. Perhaps it would work by using a tileindex layer as a tileindex for contours. 

LAYER    #OGR tileindex layer
NAME "ogr_tileindex"
CONNECTIONTYPE OGR
CONNECTION ....
...
...

LAYER  #countour layer
TILEINDEX "ogr_tileindex"
CONNECTIONTYPE CONTOUR PROCESSING "BAND=1"
....
....
 
But based on the error message Mapserver tries already open your GRIB2 files through GDAL/OGR. Are you sure that you have valid path in the "location" field of the tileindex shape?

-Jukka Rahkonen-

Kralidis, Tom wrote:

 
Hi all: using 6.4.1 we are attempting to display (via WMS) GRIB2 data as a contour layer backed by a tileindex setup.  Invoking a basic WMS 1.3.0 GetMap request returns the following ServiceExceptionReport:

msDrawMap(): Image handling error. Failed to draw layer named 'RDPS.ETA_PN'.
msContourLayerOpen(): Image handling error. Unable to open GDAL dataset.
msBuildPath: Unable to access file. 
msBuildPath: Unable to access file. 
msContourLayerSetTimeFilter(): General error message. Assertion failed: Contour layer not opened!!!

When I point directly to a single GRIB2 file (via the DATA directive), all works as expected.

Layer definition snippet below.

Any idea what I'm doing wrong here?  Or whether this is a suitable workaround?  Note we are bound to UbuntuGIS stable.

Thanks

..Tom



LAYER
 NAME "RDPS.ETA_PN"
 STATUS ON
 DEBUG OFF
 TILEINDEX "/data/tileindex/foo.shp"  # doesn't work  # DATA "/data/foo.grib2"  # works  TYPE LINE  CONNECTIONTYPE CONTOUR PROCESSING "BAND=1"
 PROCESSING "CONTOUR_INTERVAL=400"
 PROCESSING "CONTOUR_ITEM=pixel"
 DUMP TRUE
 TEMPLATE "ttt.html"
PROJECTION
 "proj=stere"
 "lat_0=90"
 "lat_ts=60"
 "lon_0=249"
 "k=90"
 "x_0=0"
 "y_0=0"
 "a=6371229"
 "b=6371229"
 "units=m"
 "no_defs"
END
...
END
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