Frank, I agree with your reasoning for letting the api do it anyway because it would be a pain to close and reopen the file. I just wanted to let you know in case it was a bug. Thanks for the response.
Best regards, Martin -----Original Message----- From: fwarmer...@gmail.com [mailto:fwarmer...@gmail.com] On Behalf Of Frank Warmerdam Sent: Monday, January 09, 2012 7:16 PM To: Martin Chapman Cc: gdal-dev@lists.osgeo.org Subject: Re: [gdal-dev] FYI - embedding overviews into read only file Martin, In general GDAL is very poor about checking read-only vs. read-write status. I presume the overviews where in a .ovr file, not in the original file itself, right? I will note it is desirable that we can build overviews for files even if we can only open the files readonly (ie. formats that don't support update), so I wouldn't want to introduce careful update permission checking now. Best regards, Frank On Mon, Jan 9, 2012 at 6:03 PM, Martin Chapman <chapm...@pixia.com> wrote: > Frank, > > > > It just dawned on me that yesterday I used the following code to open > a raster file like so: > > > > mDataSource = (GDALDataset*) GDALOpen(filePath.c_str(), GA_ReadOnly); > > > > And then used the GDALDefaultOverviews class to embed some overviews > into the file. Shouldnt the API prevent that if I opened the file as read only? > I initialized the default overviews class using the dataset pointer. > I am using GDAL 1.8.1. . I used the BuildOverviews() method of the > default overviews class to execute the process. > > > > Best regards > > Martin > > > > > > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev -- ---------------------------------------+-------------------------------- ---------------------------------------+------ I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Software Developer _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
