[Xastir-dev] dbfawk-like things for OGR library?

[Curt Mills]

On Mon, 11 Oct 2004, Tom Russo wrote:

> There is a proposed standard for OGR display style specification ("OGR
> Feature Style Specification") on the OGR/GDAL web site, and it might be best
> to try to play within that.
>
> <http://gdal.velocet.ca/~warmerda/projects/opengis/ogr_feature_style_008.html>

> Coming up with a feature style gui sounds like a good idea.  Given the
> enormous range of GIS data formats and attribute sets, making one that's
> general enough sounds like a major effort.

I know I don't fully comprehend the problem yet.  If I did I'd
probably be running in the other direction about now.  Seeing as I'm
not yet, I'll keep working on it.  I'd like to have a solution
fairly soon.

I want something that is very fast, general enough to handle most or
all of the cases we might throw at it, and something the users will
be able to easily tweak, hopefully through a simple GUI.  I know I'm
asking for too much.

Any ideas along those lines appreciated.  I've read that Feature
Style stuff before, or at least glanced at it.  I'll go read it
again.

I also see that there are SQL-like things I can do with the OGR
datasets, things that are handled by a real SQL database, or by OGR
itself if a back-end database isn't available.  Perhaps we could
make use of that stuff to implement some of the ideas we had for
flat files or SQL database back-end, with no loss in functionality
switching between the two?

Wait...  What's in OGR is probably way too limited, as I expect that
operates on one open dataset at a time.  With a real SQL database we
could query for vectors within a lat/long rectangle across multiple
datasets and/or multiple types of datasets, plus have data storage
for our packet data.

Getting distracted here.  Off to think about attributes and how to
select/display them again...

-- 
Curt, WE7U.				archer at eskimo dot com
http://www.eskimo.com/~archer
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