[Qgis-developer] updating vector attribute tables

[Carson Farmer]

Thanks Martin,

Martin Dobias wrote:
> Hi Carson,
>
> On Fri, May 16, 2008 at 12:15 AM, Carson Farmer <cfarmer at uvic.ca> wrote:
>   
>> Hello list,
>>
>> Does anyone know of a way to force a vector layer to reload it's attribute
>> table? For example, say I used some outside application to update a field in
>> the .dbf or a shapefile, can I get the associated vector layer in QGIS to
>> reflect these changes programatically?
>>     
>
> this has been already addressed in previous replies - for OGR sources
> (including shapefiles) you would need to reopen the layer, using
> PostGIS provider you'll get always fresh data.
>
>
>   
>> On a related note, is there any plans in the near future to make it possible
>> to add fields to vector layer attribute tables (specifically shapefile
>> attribute tables)? (I'm sure this has been asked before, but I haven't been
>> able to find an answer...?)
>>     
>
> This functionality is missing because it's missing in also in shapelib
> (which is used in OGR for shapefiles). Some time ago I wanted to
> implement it there, but never done it... if you have some C
> programming experience, go ahead!
>
>   
I guess it's time to learn C then!

Cheers,

Carson