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</o:shapelayout></xml><![endif]--></head><body lang=DE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>we are currently trying to write a raster data plugin using the GDALibrary to display rendered image data from our mapping application inside QGIS.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>We successfully loaded our data as a rasterlayer in QGIS, but could not find a way to display overviews, i.e. lower resolution/downscaled images yet.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>GDAL provides an (terribly documented) overview API that we thought to have implemented correctly by now, but we have not found out yet how and when QGIS makes use of this functionality.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Has anyone experience with GDAL Raster drivers and QGIS and may point us in the right direction?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you!<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;color:black;mso-fareast-language:DE'>--</span><span lang=EN-US style='font-size:10.0pt;color:black;mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;color:black;mso-fareast-language:DE'>David Weiß</span><span lang=EN-US style='font-size:10.0pt;color:#E02129;mso-fareast-language:DE'> <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;color:#E02129;mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;color:#E02129;mso-fareast-language:DE'>PTV GROUP</span><span lang=EN-US style='font-size:10.0pt;color:black;mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;color:black;mso-fareast-language:DE'>Logistics Software Development<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;color:black;mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;color:black;mso-fareast-language:DE'>Haid-und-Neu-Str. 15, 76131 Karlsruhe, Germany<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;color:black;mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;mso-fareast-language:DE'><a href="mailto:david.weiss@ptvgroup.com"><span style='color:windowtext;text-decoration:none'>david.weiss</span><span style='color:windowtext;text-decoration:none'>@ptvgroup.com</span></a></span><span style='font-size:10.0pt;mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:10.0pt;mso-fareast-language:DE'><a href="http://www.ptvgroup.com/"><span lang=DE style='color:windowtext;text-decoration:none'>www.ptvgroup.com</span></a></span><span style='font-size:10.0pt;mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;mso-fareast-language:DE'>http://ptv.to/facebook<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;color:black;mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;color:black;mso-fareast-language:DE'>PTV Planung Transport Verkehr AG<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:7.0pt;color:black;mso-fareast-language:DE'>Headquarters: Karlsruhe<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:7.0pt;color:black;mso-fareast-language:DE'>Executive Board: Vincent Kobesen (CEO)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:7.0pt;color:black;mso-fareast-language:DE'>Chairman of the Supervisory Board: Dr. h.c. Frank-Jürgen Weise<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:7.0pt;color:black;mso-fareast-language:DE'>Commercial Register (HRB-Nr): 109262<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:7.0pt;color:black;mso-fareast-language:DE'>Local Court: Mannheim</span><span lang=EN-US style='mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>