Hi all, Piero is right - what I said applies to the case that grid and CRS axes align - which addresses the vast marjotiy of cases in my experience. However, OGC coverages (to some extent CIS 1.0, more with CIS 1.1) can also address more complex cases (irregular grids, grids embedded in higher-dimensional spaces, grids given by sensor models, etc.), but naturally description of such grids gets increasingly involved.
To put it differently: parameters omitted use defaults that try to keep usage simple. My 2 philosophical cents, Peter On 04/11/2017 09:13 AM, Piero Campalani wrote: > Hi Jukka, > > On 10 April 2017 at 16:56, <gdal-dev-requ...@lists.osgeo.org > <mailto:gdal-dev-requ...@lists.osgeo.org>> wrote: > > Andrea wrote: > > If there is no 1:1 correspondence between geographic and raster space > axis, then I see no other way but to use Function to explicitly correlate > the two. > How would you propose to proceed instead? > > Perhaps with offset vectors? > > > > l'lI just chime in to confirm you that: yes, offset vectors are the right > means. > > There is no need for raster and CRS axis to have 1) the same dimensionality > (you want to describe a 2D grid in a 3D cube) and neither 2) the same axis > ordering. > > Indeed raster/CRS axis pairing can make sense only when the raster is > diligently aligned with the CRS space, otherwise that would makes no sense. > > @see > http://rasdaman.org/wiki/PetascopeUserGuide#GridaxislabelsandCRSaxislabels > http://rasdaman.org/attachment/wiki/PetascopeUserGuide/GridDomainSetAxes.png > > hth, > -Piero > > > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/gdal-dev -- Dr. Peter Baumann - Professor of Computer Science, Jacobs University Bremen www.faculty.jacobs-university.de/pbaumann mail: p.baum...@jacobs-university.de tel: +49-421-200-3178, fax: +49-421-200-493178 - Executive Director, rasdaman GmbH Bremen (HRB 26793) www.rasdaman.com, mail: baum...@rasdaman.com tel: 0800-rasdaman, fax: 0800-rasdafax, mobile: +49-173-5837882 "Si forte in alienas manus oberraverit hec peregrina epistola incertis ventis dimissa, sed Deo commendata, precamur ut ei reddatur cui soli destinata, nec preripiat quisquam non sibi parata." (mail disclaimer, AD 1083)
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