When GDAL_OF_VERBOSE_ERROR is not set, GDALOpenEx(), the generic opening
logic, doesn't emit a CPLError(). Here the error is emitted by the XYZ
driver itself. Normally the Open() method of drivers isn't supposed to
emit errors until it is that the input dataset belong to them. The XYZ
driver is a bit particular, because it doesn't have much hints to know
if a dataset is a XYZ (with a structure it can't handle, hence an error
message) or not.
Le 29/06/2025 à 21:52, Joaquim Manuel Freire Luís a écrit :
Thanks
Silenced now. But if the GDALOpenEx docs say
Verbose error: GDAL_OF_VERBOSE_ERROR. If set, a failed attempt to open
the file will lead to an error message to be reported.
When it is not set (the case here) it should not need this “extra
care”, no?
*From:*Even Rouault <even.roua...@spatialys.com>
*Sent:* Sunday, June 29, 2025 8:24 PM
*To:* Joaquim Manuel Freire Luís <jl...@ualg.pt>; gdal-dev@lists.osgeo.org
*Subject:* Re: [gdal-dev] GDALOpenEx() not failing silently
Hi,
you can surround the call to GDALOpenEx() with
CPLPushErrorHandler(CPLQuietErrorHandler);
... GDALOpenEx() here ...
CPLPopErrorHandler();
Le 29/06/2025 à 21:20, Joaquim Manuel Freire Luís via gdal-dev a écrit :
Hi,
Again the Julia wrapper. In it to find if a file holds a raster or
a vector I first open it with GDAL_OF_RASTER and see it the return
pointer is NULL. This has been working well and SILENTLY when it
fail (because a OGR vector file name was passed in). But with
these Meteostat .csv.gz files it fails (expected) but prints an
ERROR 1 message.
The closes (to C and perhaps Python) I can reproduce is this
julia>
GMT.Gdal.GDALOpenEx("/vsigzip//vsicurl/https://bulk.meteostat.net/v2/daily/08554.csv.gz";,
GMT.Gdal.GDAL_OF_RASTER, C_NULL, C_NULL, C_NULL)
ERROR 1: At line 1, did not find X, Y and/or Z values
Ptr{Nothing} @0x0000000000000000
All works right, but this error message is annoying (and normal
users will not understand it).
Anything I can do to shut it up?
Joaquim
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