Re: [gdal-dev] ogr ODBC problem

2012-05-30 Thread Jeff McKenna
On 12-05-30 5:09 PM, steve.tout...@inspq.qc.ca wrote: > > Hi! > I use this command to get the tables from an ODBC connection > ogrinfo ODBC:User/Pwd@DNS > > The connection is succesful but I get this error several times > ERROR 1: No column definitions found for table '�s���s!.���', > lay

[gdal-dev] RE ogr ODBC problem

2012-05-30 Thread Steve . Toutant
Note that it is a non-spatial mssql database Steve Toutant/INSPQ/ 2012-05-30 16:09 A gdal-dev@lists.osgeo.org cc Objet ogr ODBC problem Hi! I use this command to get the tables from an ODBC connection ogrinfo ODBC:User/Pwd@DNS The connection is succesful but I get this error seve

Re: [gdal-dev] GDAL alpha channels

2012-05-30 Thread Craig Bruce
Even Rouault wrote: > There will be likely a compatibility problem if we do this, because > GDAL up to now writes TIFF RGBA images with EXTRASAMPLE_ASSOCALPHA > (pre-multiplied), but I think in most cases the data that people have > feed in the GTiff driver was not pre-multiplied. So if we un-pre

[gdal-dev] ogr ODBC problem

2012-05-30 Thread Steve . Toutant
Hi! I use this command to get the tables from an ODBC connection ogrinfo ODBC:User/Pwd@DNS The connection is succesful but I get this error several times ERROR 1: No column definitions found for table '�s���s!.���', layer not usable. I used OGR ODBC for several months from a Windows serv

Re: [gdal-dev] GDAL alpha channels

2012-05-30 Thread Craig Bruce
Frank Warmerdam wrote: > because it is hard to hit all the appropriate code paths safely and > partly because the result will be lossy. It depends on what you mean by "lossy". The value returned through the GDAL interface won't be the literal sample value that is in a TIFF file with associated

[gdal-dev] transform options in Python?

2012-05-30 Thread Shaun Walbridge
Hi, I'm working with a fairly straightforward Python script to produce geodesic buffers. One step I need is to force dateline wrapping so my buffers don't span the globe. I poked around ogr2ogr.cpp, and found that it sets 'WRAPDATELINE=YES'. Looking into ogr.py, I see that papszOptions exists, but