[Gvsig_english] Export Shapefile behaviour with Joined Tables
Juan Ignacio Varela García (Nacho Uve)
nvarela at cartolab.es
Wed Dec 23 13:19:36 CET 2009
+1
2009/12/22 Simon Cropper (Botanicus Australia Pty Ltd) <
scropper at botanicusaustralia.com.au>
> Hi,
>
> This is another - "it would be better" issues.
>
> When you join two tables and then export the shapefile to "hard code"
> the information so to speak. Despite having unique names the resulting
> attribute table to the exported shapefile has "j_" in front of all the
> field names. This is frustrating because if you have a field name, like
> I did, Active2005, Active2007 and Active2009 once this prefix is added
> the resulting table has tree fields called "J_ACTIVE20" as the fields
> are truncated to 10 characters.
>
> I suppose I could understand this behaviour if you have duplicate fields
> in the original joined table (i.e. the use of a prefix) but the creation
> of a table that has duplicate field names is a violation of the rules
> around DBFs (i.e. you can't have two fields the same).
>
> The export facility should review the output file's attribute table
> names and confirm that duplicate names have not been generated.
>
> Personally, I think that if you have a joined table and no fields have
> the same name then the exported table should just be a reflection of
> this - i.e. the "J_" should not be inserted.
> --
>
> Cheers Simon
>
> Simon Cropper
> Botanicus Australia Pty Ltd
> PO Box 160, Sunshine, Victoria 3020.
> P: 9311 5822. M: 041 830 3437.
> mailto: scropper at botanicusaustralia.com.au
> <mailto:scropper at botanicusaustralia.com.au>
> web: www.botanicusaustralia.com.au <http://www.botanicusaustralia.com.au>
>
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--
Juan Ignacio Varela García (Nacho Uve)
Coordinador Grupo de Desarrollo
Cartolab - Laboratorio de Ingeniería Cartográfica
http://www.cartolab.es
ETS Ingeniería de Caminos, Canales y Puertos
Universidade da Coruña
Campus de Elviña - 15071 A Coruña (España)
(34)981167000 ext. 5493
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