Re: [Qgis-user] Edit MapInfo TAB files

2013-04-24 Thread Radim Blazek
On Tue, Apr 23, 2013 at 7:48 AM, jamiecook
jamie.c...@veitchlister.com.au wrote:


 Sponsoring that development within GDAL/OGR is a very good idea.
 Paolo Cavallini wrote
 Il 26/03/2012 11:48, Fischer, Andreas ha scritto:
 Maybe the library will be extended to allow editing TAB-files in future.
 It would make things much more easier for me, since I can't really get
 rid of TAB-files yet.

 We're currently evaluating QGIS as a partial replacement for MI and would
 potentially be interested in such sponsorship. Questions I have are the
 regular type - how much, how long, who to talk to?

If you are planning to use Mapinfo TAB with QGIS you should be aware
of possible slowness on Windows when files are opened over Windows
network. Basically the same problem as described for shapefile:
http://hub.qgis.org/issues/6448

Shortly, if OpLock is broken, OGR Mapinfo driver reads 512 bytes
blocks and VSI cache does not help for some strange reason.

Don't get frightened, we know about it and we are working on that problem.

The problem should also be taken into consideration if OGR Mapinfo TAB
driver is going to be improved/extended. It should use some buffered
I/O, I am not sure if VSI cache is suitable enough to be used for
buffered I/O, in any case it does not yet support writing.

Radim

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Re: [Qgis-user] Edit MapInfo TAB files

2013-04-23 Thread Bo Victor Thomsen
For the Who to talk with, try 
http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html which is the 
GDAL developers list.


What is your usage scenario ? For read-only work, QGIS  is - function 
wise - a drop-in replacement for MapInfo. For read/write work, you might 
consider using a data format, for example Postgis/Postgresql,  that can 
be edited by both MapInfo and QGIS.



Regards
Bo Victor Thomsen
Aestas-GIS
Denmark

Den 23-04-2013 07:48, jamiecook skrev:


Sponsoring that development within GDAL/OGR is a very good idea.
Paolo Cavallini wrote

Il 26/03/2012 11:48, Fischer, Andreas ha scritto:

Maybe the library will be extended to allow editing TAB-files in future.
It would make things much more easier for me, since I can't really get
rid of TAB-files yet.

We're currently evaluating QGIS as a partial replacement for MI and would
potentially be interested in such sponsorship. Questions I have are the
regular type - how much, how long, who to talk to?



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Re: [Qgis-user] Edit MapInfo TAB files

2013-04-23 Thread FERRATON Alain (Chef du groupe informatique technique et scientifique, responsable du pôle national d'expertise progiciels géomatiques) - SG/SPSSI/CPII/DOO/ITS
the French Ministry of Ecology is also interested. A fundamental point 
is to offer the opportunity to work directly with MapInfo files in QGIS.

To do this would require an evolution of miTab driver.
http://mitab.maptools.org/.

in the meantime, work with postgis (or spatialite) as a pivot format is 
a good alternative, but can cause problems transcoding of data.


Alain FERRATON
CP2I/DOO
02.40.12.84.08

Le 23/04/2013 08:45,  Bo Victor Thomsen (par Internet, dépôt 
qgis-user-boun...@lists.osgeo.org) a écrit :

For the Who to talk with, try
http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html which is the
GDAL developers list.

What is your usage scenario ? For read-only work, QGIS is - function
wise - a drop-in replacement for MapInfo. For read/write work, you might
consider using a data format, for example Postgis/Postgresql, that can
be edited by both MapInfo and QGIS.


Regards
Bo Victor Thomsen
Aestas-GIS
Denmark

Den 23-04-2013 07:48, jamiecook skrev:


Sponsoring that development within GDAL/OGR is a very good idea.
Paolo Cavallini wrote

Il 26/03/2012 11:48, Fischer, Andreas ha scritto:

Maybe the library will be extended to allow editing TAB-files in
future.
It would make things much more easier for me, since I can't really get
rid of TAB-files yet.

We're currently evaluating QGIS as a partial replacement for MI and would
potentially be interested in such sponsorship. Questions I have are the
regular type - how much, how long, who to talk to?



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Re: [Qgis-user] Edit MapInfo TAB files

2013-04-22 Thread jamiecook


Sponsoring that development within GDAL/OGR is a very good idea. 
Paolo Cavallini wrote
 Il 26/03/2012 11:48, Fischer, Andreas ha scritto:
 Maybe the library will be extended to allow editing TAB-files in future.
 It would make things much more easier for me, since I can't really get
 rid of TAB-files yet.

We're currently evaluating QGIS as a partial replacement for MI and would
potentially be interested in such sponsorship. Questions I have are the
regular type - how much, how long, who to talk to? 



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Re: [Qgis-user] Edit MapInfo TAB files

2012-03-25 Thread Giovanni Manghi

 let me know what I’m doing wrong.


nothing, the gdal/ogr library does not support update of existing tab
files

http://www.gdal.org/ogr/drv_mitab.html


cheers


-- Giovanni --

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