[mapserver-users] contour layers with tileindex issues

[Kralidis, Tom (EC/EC)]

Hi Jukka: thanks for the info.  The files exist on disk.  I've opened a GitHub issue w/ a simple test case at https://github.com/mapserver/mapserver/issues/5212

..Tom

> -----Original Message-----
> From: Rahkonen Jukka (MML) [mailto:jukka.rahkonen at maanmittauslaitos.fi]
> Sent: 2015-12-14 11:01
> To: Kralidis, Tom (EC/EC); mapserver-users at lists.osgeo.org
> Subject: Re: contour layers with tileindex issues
> 
> 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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