Re: [gdal-dev] Error when trying to compress a TIFF file

2014-08-26 Thread Hanlie Pretorius
Thanks, the r- average option improved the quality quite a bit. 2014-08-26 17:34 MGT+02:00, Even Rouault : > Selon Hanlie Pretorius : > >> Hi Even, >> >> Thanks, the gdaldo command made a huge difference to the speed with >> which QGIS works with the raster. >> >> The image looks a bit shoddy, tho

Re: [gdal-dev] Error when trying to compress a TIFF file

2014-08-26 Thread Even Rouault
Selon Hanlie Pretorius : > Hi Even, > > Thanks, the gdaldo command made a huge difference to the speed with > which QGIS works with the raster. > > The image looks a bit shoddy, though, even when zoomed out. It > improved when I set the quality to 100 and the file is still a tenth > of the origina

Re: [gdal-dev] Error when trying to compress a TIFF file

2014-08-26 Thread Hanlie Pretorius
Hi Even, Thanks, the gdaldo command made a huge difference to the speed with which QGIS works with the raster. The image looks a bit shoddy, though, even when zoomed out. It improved when I set the quality to 100 and the file is still a tenth of the original size. Would it help to create more le

Re: [gdal-dev] Error when trying to compress a TIFF file

2014-08-26 Thread Even Rouault
Hanlie, The warning "VRTSourceRasterBand::iRatserIO() called recursively on the same band" is bug http://trac.osgeo.org/gdal/ticket/5468 It is due to the statistics computation on the intermediate VRT file (implementation detail), but shouldn't influence on the image itself You can run afterward "

[gdal-dev] Error when trying to compress a TIFF file

2014-08-26 Thread Hanlie Pretorius
Hi, I'm trying to convert a 16 bit image to 8 bits and at the same time add JPEG compression, but gdal reports errors during the process. gdal_info for the input file is: Driver: GTiff/GeoTIFF Files: D:/SPOT 6/PS_Envi/Test_8bit.TIF Size is 30717, 28629 Coordinate System is: PROJCS["WGS 84 /

Re: [gdal-dev] Converting MDB File With Unicode Characters

2014-08-26 Thread Tomer
i tried different options in the Encoding menu but none displayed the file correctly. I think the problem is caused by incorrect reading of the mdb file made ​​by the driver. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Converting-MDB-File-With-Unicode-Characters-tp51580

Re: [gdal-dev] Convert S57 to image with S52 rendering

2014-08-26 Thread Storkur
We are also interested in such combination of libs. Best regards -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gdal-dev-Convert-S57-to-image-with-S52-rendering-tp4987897p5158302.html Sent from the GDAL - Dev mailing list archive at Nabble.com. ___

Re: [gdal-dev] Get hold of TIFF structure

2014-08-26 Thread Even Rouault
Selon Norman Goldstein : > Let's say I've opened a dataset (from a tiff file on disk). How do I > get hold of the TIFF structure that is used by the libtiff library? GDALDataset::GetInternalHandle() on a GTiff dataset will return a TIFF* handle. But be careful. If you use GDAL compiled with inte

Re: [gdal-dev] Converting MDB File With Unicode Characters

2014-08-26 Thread Even Rouault
Selon Tomer : > The ogrinfo display non-English characters as '?'. I'm not sure in which > encoding it return its results. (Is there any way to check the encoding?) For example, if you do "ogrinfo the_arguments > somefile.txt" and open it with Notepad++, you can try different options in the Encod

Re: [gdal-dev] Converting MDB File With Unicode Characters

2014-08-26 Thread Tomer
The ogrinfo display non-English characters as '?'. I'm not sure in which encoding it return its results. (Is there any way to check the encoding?) Example for ogrinfo output: . OGRFeature:4 OBJECTID = 3 . . _?? = -?

Re: [gdal-dev] Rasdaman VRT generation script

2014-08-26 Thread Fabian Schindler
Even, I was not aware that creating a VRT was that easy... shame on me. My script would have handled connection parameters and created a query string, but I guess there is not enough added value. Thanks for the info Fabian On 2014-08-25 16:06, Even Rouault wrote: > Selon Fabian Schindler : > >>