On mardi 7 mars 2017 09:17:50 CET Felix Obermaier wrote: > Peter, > > why would it cease to respect the dBaseIV Standard? I’m not proposing a > change regarding the dBase format but an additional file that gives > additional information the data in the attribute column. If you don’t > supply that file you don’t have the additinal information, but you still > can access the data and have to figure out by yourself what it is. > I know that there are other data sources that are not limited in the size > for column names that I can use. But often I’m asked „Can you provide me a > Shapefile“ and then I’m sometimes stuck with column names that are > abbreviated to undistinctness. Or I get a shapefile of that kind, which > does not make it any better. > Felix > > Von: Peter Halls [mailto:[email protected]] > Gesendet: Montag, 6. März 2017 14:56 > An: Felix Obermaier <[email protected]>; gdal dev > <[email protected]> Betreff: Re: [gdal-dev] Overcome attribute name > limitation in shapefiles > Felix, > following your proposal would make Shapefiles cease to respect the > dBaseIV Standard and potentially seriously affect their interchangability. > There are a range of alternative formats supported by GDAL that achieve > your goal: for example, I use SQL as my base format and only convert when > necessary. SQL is generally accepted by other packages and is far more > flexible than dBaseIV. Best wishes, > Peter > > On 6 March 2017 at 13:26, Felix Obermaier > <[email protected]<mailto:[email protected]>> wrote: Hello, > > is it somehow possible to overcome the attribute name length limitiation of > DBase files using GDAL? If so, how? > If not, why not add (another) file the shapefile dataset of shapes (shp, > shx), projection (prj), data (dbf) and encoding(cpg), one that is (re-) > defining the column names, allowing for > * mixed casing, > * non-ASCII characters, > * more than 10/11 characters > > I’m aware of a software product that does it this way. The file that renames > the columns is set up like a CSV file defining two columns, „Name“ and > „Alias“. „Name“ is the actual name of the column, „Alias“ the name in the > dbase file header.
What is this software that produces this sidecar CSV-like format ? Could you show examples of such datasets ? > Felix Obermaier > > ----------------------------------------------- > Ingenieurgruppe IVV GmbH & Co. KG > Dipl.-Ing. Felix Obermaier > Oppenhoffallee 171 > 52066 Aachen > > Telefon: +49 (241) 94691-39<tel:+49%20241%209469139> > Telefax: +49 (241) 531622<tel:+49%20241%20531622> > eMail: [email protected]<mailto:[email protected]> > Internet: http://www.ivv-aachen.de > > Sitz der Gesellschaft: Aachen > Amtsgericht Aachen HRA 6212 > Geschäftsführer: > Dipl.-Ing. Wolfgang Hölsken > Dr.-Ing. Stephan Krug > Dr.-Ing. Dirk Serwill > IVV-Management GmbH > Amtsgericht Aachen HRB 12453 > > > _______________________________________________ > gdal-dev mailing list > [email protected]<mailto:[email protected]> > https://lists.osgeo.org/mailman/listinfo/gdal-dev > > > > -- > ---------------------------------------------------------------------------- > ------------------------------------ Peter J Halls, Post-war Reconstruction > and Development Unit (PRDU), University of York > > Snail mail: c/o Research Centre for the Social Sciences (RCSS), > University of York, > Heslington, York YO10 5DD > > This message has the status of a private and personal communication > ---------------------------------------------------------------------------- > ------------------------------------ -- Spatialys - Geospatial professional services http://www.spatialys.com
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