[osg-users] [VPB] Overriding source reprojection requirement in vpbmaster

[Glenn Waldron]

Robert,

I didn't explain myself properly. All my data is indeed reprojected in
advance. The issue is that vpbmaster just *thinks* the data needs
reprojection -- I suspect the fault lies with the ECW plugin -- and so I'd
like to override the check and tell vpbmaster to forge ahead anyway and
treat the data as if it needs no reprojection. Which it doesn't. :) Does
that make sense?

I hope you enjoyed your walk! Glenn

On Sat, Mar 29, 2008 at 5:20 AM, Robert Osfield <robert.osfield at gmail.com>
wrote:

> Hi Glenn,
>
> It's correct vpbmaster refuses to do a build if the sources aren't all
> the same coordinate system as otherwise running osgdem on multiple
> processes at the same time would cause multiple reprojections on the
> same data at the same time and an unholy mess.
>
> The way to manage the reprojection is do it as a preprocessing step,
> creating a cache of reprojected data.  For this you use another tool
> vpbcache.   I'm looking after my little 4 year old right now so can't
> answer any further right now - we're going out for walk!!
>
> Robert.
>
> On Sat, Mar 29, 2008 at 12:50 AM, Glenn Waldron <gwaldron at gmail.com>
> wrote:
> > Robert,
> >
> >  I've noticed that vpbmaster refuses to continue if it detects that all
> > sources are not in the same coordinate system. I can certainly
> understand
> > why. That said, is there a way to override this decision and tell
> vpbmaster
> > to "trust me" that all sources are in a common projection?
> >
> >  Case in point: GDAL's ECW (ER Mapper compressed wavelet raster) plugin
> is
> > sometimes not able to correctly parse the coordinate system information
> in
> > the file. (This is a known issue -- http://www.gdal.org/frmt_ecw.html).
> So
> > vpbmaster won't run since it thinks the ECW is in a different projection
> > than other input layers.
> >
> > I tried using the "--cs" option to manually specify the CS; also
> > "--ReprojectSources False"; no luck in either case. I'm running on Win32
> > with the latest SVN head of OSG and VPB.
> >
> >  Glenn
> >
> > --
> > Glenn Waldron : Pelican Mapping : http://pelicanmapping.com :
> 703-652-4791
> > _______________________________________________
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> >
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> >
> >
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-- 
Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : 703-652-4791
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