Hi Tim, Many thanks for fixing the problems [14381, 14387 & 14425]!
But there is now another one popping up: When the data values in an one-band raster are real numbers and are negative/positive or are greater than 255 (?) the histogram curve does not display. The x- and y-axis correctly show the range of values but no curve is displayed. Furthermore, if data values are positive and negative, the histogram curve stops at 0: no curve over the negative values. It also looks like the number of bins is too small when the data range is small. I've got a raster with "real number" values between 0 and 5. The number of bins on that raster is only 6. This is far too coarse to be of any use. Do I open a ticket for those problems? Cheers, Benoit On 18/10/2010 09:29, Benoit de Cabissole wrote: > Hi Tim, > > Just after upgrading to release 14390 the histogram function works like > a charm when I open *for the first time* the raster properties window. > Thank you! > > But, if I close the raster property window while in the histogram tab > and try to re-open it, QGIS crashes! > In fact I cannot open any raster properties window after that without > having QGIS crash... > I've edited the 'row' value in the RasterLayerProperties in the registry > to set it to 1 (from 6) and I can again use QGIS normally. > So it seems that the raster properties window bombs out QGIS if it opens > in the histogram tab (row=6). > > Can you reproduce this behaviour in Linux/Mac/Other win? > > I'm on WindowsXP in OSGeo4W. > > One comment: the stats are computed each time the histogram tab is > opened. For large raster it takes a long time to compute the histogram. > Would it be best to save the histogram somewhere and reuse it? > > Cheers, > Benoit > > > > On 17/10/2010 09:23, Tim Sutton wrote: >> Hi >> >> On Thu, Oct 14, 2010 at 9:51 AM, Benoit de Cabissole <[email protected]> >> wrote: >>> Hi, >>> >>> A) In release 14370 the histogram tab of the raster properties window >>> has a problem: >>> The histogram is not displayed the second time the 'histogram tab' is >>> clicked. >>> E.g.: >>> 1 - open the raster properties window >>> 2 - click on the histogram tab >>> 3 - histogram is computed and displayed >>> 4 - click on any other tab >>> 5 - click on the histogram tab again >>> 6 - blank screen!! >>> >>> On WinXP - OSGeo4W dev installation >>> Can someone replicate the problem? >>> >> This should be fixed now as of r14387. >> >> Regards >> >> Tim >> > _______________________________________________ > Qgis-developer mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-developer > _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
