[gdal-dev] How do I open vector files (e.g. shp) using GDAL

[Martin Chapman]

Sorry, the call GDALOpen will not work for shape files:

 

Use

 OGRRegisterAll();

dataSource = OGRSFDriverRegistrar::Open((const char*) filePath.c_str());

for c++;

 

and 

 

hDS = OGROpen
<http://www.gdal.org/ogr/ogr__api_8h.html#123bb02ac8c5cfe143e132f627531125>
( "point.shp", FALSE, NULL );

 

 

for c.

 

see http://www.gdal.org/ogr/ogr_apitut.html for more info

 

Martin

 

From: Martin Chapman [mailto:chapmanm at pixia.com] 
Sent: Monday, July 20, 2009 3:48 PM
To: 'Smart, Gary'; 'gdal-dev at lists.osgeo.org'
Subject: RE: [gdal-dev] How do I open vector files (e.g. shp) using GDAL

 

Call OGRRegisterAll(); on the line right before GDALOpen();

 

Martin

 

From: gdal-dev-bounces at lists.osgeo.org
[mailto:gdal-dev-bounces at lists.osgeo.org] On Behalf Of Smart, Gary
Sent: Monday, July 20, 2009 2:51 PM
To: gdal-dev at lists.osgeo.org
Subject: [gdal-dev] How do I open vector files (e.g. shp) using GDAL

 

I understand that GDAL can open vector formats as if they were a dataset?

 

E.g. I read that it is possible to pass the GDALOpen either a single .shp
file (in which case it treats it as if it only had one layer) or a directory
containing multiple .shp files - which presumably it opens as multi layered?

 

However, whenever I try to open vector files in this way (directory or file)
I get.

 

ERROR 4  - blah blah is not recognised as a supported file format"

 

I am still new to all this (having only just conquered raster formats) so I
suspect I am doing something pretty dumb.

Perhaps someone can help?

 

Gary

 

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