Hi Tyler,

'ro' and 'rw' mean what they imply.

The '+' symbol tells that the format supports the Create() method. So, we
can use them to create a dataset from scratch and add metadata explicitly.
Without it, we need a 'template' dataset.

The 'v' means that the format driver supports the virtual system interface.
Note that there may be drivers that support it but don't report that they
do.


On Tue, Mar 5, 2013 at 9:01 AM, Tyler Mitchell <tyler.mitch...@actian.com>wrote:

> Not sure how to describe it, but when gdal lists available formats, I see
> a few different ways that formats are marked as read, write, etc.
> The "rw" and "ro" items are easy enough for me to understand, but what
> about:
> "rov"
> "rw+v"
> "rwv"
> "rw+"
> ?
>
> Does the "v" refer to support in VRTs perhaps?
> Do  rw+v, rwv, rw+ all mean same thing?
>
> Any tips appreciated :)
>
> Tyler
> _______________________________________________
> gdal-dev mailing list
> gdal-dev@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>



-- 
Best regards,
Chaitanya kumar CH.

+91-9494447584
17.2416N 80.1426E
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