On Thu, Jul 30, 2015 at 9:19 AM, Andrea Peri <[email protected]> wrote: > Hi, > > I have a GeoTiff raster of 24Gbyte, floating point (Float64) with 11 > bands and fomat geotiff. > > When try to open it with qgis 2.8.1 I see it take a really uge time to > open it (about 10 hours). > Initially I guess that was a time due to the huge dimension, but after > the qgis show it. > I notice that it is reallyquickly to zoom and pan. > I don't understand why this difference between the open time and zoom/pan > time. > > My first suspect was that qgis want to calculate the statistics in first open. > But after a check with gdalinfo I see the statistics are available > also in original tiff.
QGIS defaults are stretch to 2/98% cut, try to set in Options > Rendering > Rasters Contrast enhancement: No stretch or Limits: Minimum / maximum Radim > So I dont know really why it take so more time to open it. > > I hope to find some setting to reduce the pen time for this kind of images. > > Thx, > > A. > > -- > ----------------- > Andrea Peri > . . . . . . . . . > qwerty àèìòù > ----------------- > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
