Andrea, Maybe you can have a look into VRT format where you can set up a NODATA value.
Regards, Y. On Sunday, September 06, 2015 12:32:12 Andrea Peri wrote: > Hi, > > I have no success to find any info on the NODATA question in the > floating point raster. > > Is this kind of raster suitable for use on mapserver ? > > Thx. > > 2015-08-18 10:27 GMT+02:00 Andrea Peri <aperi2...@gmail.com>: > > HI, > > > > The question of NODATA processing command is not completelly clear afaik. > > Infact I found a patch from warmerdam: > > > > https://trac.osgeo.org/mapserver/ticket/2404 > > > > Where it speak explicitly of a PROCESSING "NODATA" setting. > > > >>I would note that OFFSITE is still supported, and the usual PROCESSING > >>"NODATA=OFF" >mechanism can be used to disable using GDAL level nodata.>> > > A. > > > > 2015-08-18 9:28 GMT+02:00 Andrea Peri <aperi2...@gmail.com>: > >> Hi, > >> > >> I have a clearly response from the log. > >> > >> The nodata is unsupported for this kind of rasters. > >> > >>> LoadGDALImage(rt_sat.LC8191.rt.attuale): NODATA value -9999 in GDAL > >>> > >>>file or PROCESSING directive largely ignored. Not yet fully supported > >>>for > >>>unclassified scaled data. The NODATA value is excluded from auto-scaling > >>>min/max computation, but will not be transparent. > >>> > >> So I must found another solution for my rasters. > >> > >> Regards. > >> > >> 2015-08-18 9:08 GMT+02:00 Andrea Peri <aperi2...@gmail.com>: > >>> So my question is a little different. > >>> > >>> Seem that mapserver was not able to automatically understand the > >>> NODATA values of floating point rasters. > >>> > >>> In my usecase: the NODATA value is -9999.0 > >>> I produce the catalog using gdaltindex, and apply the result to > >>> mapserver 7. > >>> > >>> The result is this: > >>> > >>> http://tinyurl.com/ndsdyr8 > >>> > >>> The only partially solution I found was to set > >>> OFFSITE 0 0 0 > >>> but it is acceptable for my usecase because the black color is a color > >>> really available inside the rasters and it is not usable as a > >>> transparent color. > >>> > >>> Is this an issue for mapserver 7 ? > >>> > >>> Thx, > >>> > >>> A. > >>> > >>> 2015-08-17 16:11 GMT+02:00 Andrea Peri <aperi2...@gmail.com>: > >>>> Hi Jukka. > >>>> > >>>> Perhaps you have right ! > >>>> > >>>> The NODATA setting is an ancient setting that I reuse always in my > >>>> mapfiles but only now I notice that the mapserver document don't > >>>> report him. > >>>> So more probably it is a false setting. > >>>> > >>>> But , if the nodata setting dont exist, how say to the mapserver to > >>>> filter the nodata of a floating raster ? > >>>> > >>>> Thx. > >>>> > >>>>> -- > >>>>> ----------------- > >>>>> Andrea Peri > >>>>> . . . . . . . . . > >>>>> qwerty àèìòù > >>>>> ----------------- > >>>>> _______________________________________________ > >>>>> mapserver-users mailing list > >>>>> mapserver-users@lists.osgeo.org > >>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users > >>>> > >>>> -- > >>>> ----------------- > >>>> Andrea Peri > >>>> . . . . . . . . . > >>>> qwerty àèìòù > >>>> ----------------- > >>> > >>> -- > >>> ----------------- > >>> Andrea Peri > >>> . . . . . . . . . > >>> qwerty àèìòù > >>> ----------------- > >> > >> -- > >> ----------------- > >> Andrea Peri > >> . . . . . . . . . > >> qwerty àèìòù > >> ----------------- > > > > -- > > ----------------- > > Andrea Peri > > . . . . . . . . . > > qwerty àèìòù > > ----------------- -- Responsable Formation et Support Camptocamp France SAS Savoie Technolac, BP 352 73377 Le Bourget du Lac, Cedex Tel (France) : +33 4 58 48 20 43 (new !) Tel (Suisse) : +41 21 619 10 43 Mob. : +33 6 18 75 42 21 Fax : 04 79 70 15 81 Mail : yves.jaco...@camptocamp.com http://www.camptocamp.com _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users