[mapserver-users] Rewarping/Reprojection with GDAL and -wo EXTRA_SOURCE parameter

[Eichner, Andreas - SID-NLKM]

Can you try if PROCESSING "POLYLINE_NO_CLIP=YES" helps on TYPE LINE layers?

> -----Ursprüngliche Nachricht-----
> Von: Heiko Schröter [mailto:schroete at iup.physik.uni-bremen.de]
> Gesendet: Dienstag, 17. Dezember 2013 16:46
> An: Eichner, Andreas - SID-NLKM; mapserver-users at lists.osgeo.org
> Betreff: Re: [mapserver-users] Rewarping/Reprojection with GDAL and -
> wo EXTRA_SOURCE parameter
> 
> Thanks for the hint, but sorry no, does not change rewarping
> behaviour
> of POLYGON or LINE Layers.
> Distortion and missing parts do remain.
> 
> The odd thing:
> The projection of all layers is ok if the BBOX equals or is greater
> than
> max extension of the map.
> i.e. BBOX=-6500000,-6500000,6500000,6500000 [proj=ortho units=m]
> By "zooming" in i.e. reducing the BBOX the RASTER layer rewarps ok,
> POLYGON and LINE layers do not.
> 
> 
> Am 17.12.2013 16:11, schrieb Eichner, Andreas - SID-NLKM:
> > Looks like that causes the same effect as setting
> >    PROCESSING "LOAD_WHOLE_IMAGE=YES"
> >
> >> -----Ursprüngliche Nachricht-----
> >> Von: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-
> users-
> >> bounces at lists.osgeo.org] Im Auftrag von Heiko Schröter
> >> Gesendet: Dienstag, 17. Dezember 2013 14:09
> >> An: mapserver-users at lists.osgeo.org
> >> Betreff: [mapserver-users] Rewarping/Reprojection with GDAL and -
> wo
> >> EXTRA_SOURCE parameter
> >>
> >> To make use of it in mapserver a hint has been given in an old
> >> mailing
> >> thread (sorry, lost the source) to adjust the following code
> snippet
> >> in
> >> resample.c:
> >>
> >> Version: mapserver-6.4.0
> >> resample.c
> >> <snip>
> >> /* ---------------------------------------------------------------
> ---
> >> -- */
> >>     /*      Project desired extents out by 2 pixels, and then
> strip
> >> to      */
> >>     /*      available
> >> data.                                                 */
> >>     /*
> >> ------------------------------------------------------------------
> --
> >> */
> >>     memcpy( &sOrigSrcExtent, &sSrcExtent, sizeof(sSrcExtent) );
> >>     sSrcExtent.minx = floor(sSrcExtent.minx-1.0);
> >>     sSrcExtent.maxx = ceil (sSrcExtent.maxx+1.0);
> >>     sSrcExtent.miny = floor(sSrcExtent.miny-1.0);
> >>     sSrcExtent.maxy = ceil (sSrcExtent.maxy+1.0);
> >> <snap>
> >>
> >> Changing the -/+1.0 to -/+1250.0, for example, warps the RASTER
> image
> >> correctly.
> >>
> >
> 
> 
> --
> ---------------------------------------------------------------------
> --
> Dipl.-Ing. Heiko Schröter
> Institute of Environmental Physics (IUP)   phone: ++49-(0)421-218-
> 62092
> Institute of Remote Sensing (IFE)          fax:   ++49-(0)421-218-
> 62070
> University of Bremen (FB1)
> P.O. Box 330440               email:  schroete at iup.physik.uni-
> bremen.de
> Otto-Hahn-Allee 1
> 28359 Bremen
> Germany
> ---------------------------------------------------------------------
> --