SVG to SHP ?

Post by Marcos
Hi !
I'm new to this group, and to GIS in general ... sorry for this
possibly dumb question ... ;-)
I see there are tools to convert from Shapefile format to SVG format,
does the SVG->SHP conversion have any consistent meaning ?
Thanks in advance, everybody !
Marcos

Basically, it is a one-way conversion. In converting from shapefile to
SVG you lose the "real world" coordinate system of the shapefile, and
move to page-oriented coordinates. It is possible that these are the
same, but there is no mechanism by which a converter could know this.

In principle, you could probably write a conversion routine using XML
conversion techniques to go to GMl, and then to Shapefile.

Paul

Marcos

2007-11-06 15:02:37 UTC

Basically, it is a one-way conversion. In converting from shapefile to
SVG you lose the "real world" coordinate system of the shapefile, and
move to page-oriented coordinates. It is possible that these are the
same, but there is no mechanism by which a converter could know this.
In principle, you could probably write a conversion routine using XML
conversion techniques to go to GMl, and then to Shapefile.
Paul

Thank You very much, Paul !
I just needed a confirmation to my suspect that it's essentially a one-
way conversion ...

Marcos

Marcos

2007-11-06 15:44:18 UTC

Basically, it is a one-way conversion. In converting from shapefile to
SVG you lose the "real world" coordinate system of the shapefile, and
move to page-oriented coordinates. It is possible that these are the
same, but there is no mechanism by which a converter could know this.
In principle, you could probably write a conversion routine using XML
conversion techniques to go to GMl, and then to Shapefile.
Paul

Sorry, one more question: what do You mean, with "GMI" ?
Thanks again ...

Marcos

Uffe Kousgaard

2007-11-06 19:40:13 UTC

Post by Marcos
Sorry, one more question: what do You mean, with "GMI" ?

GML: http://en.wikipedia.org/wiki/Geography_Markup_Language

Marcos

2007-11-07 08:20:01 UTC

Post by Marcos
Sorry, one more question: what do You mean, with "GMI" ?

GML:http://en.wikipedia.org/wiki/Geography_Markup_Language

Sorry, I did read l (a lowercase 'L') as an I (an uppercase 'I'). I
have always tought western alphabet should be revisited ... ;-)

Paul Cooper

2007-11-07 09:01:44 UTC

Basically, it is a one-way conversion. In converting from shapefile to
SVG you lose the "real world" coordinate system of the shapefile, and
move to page-oriented coordinates. It is possible that these are the
same, but there is no mechanism by which a converter could know this.
In principle, you could probably write a conversion routine using XML
conversion techniques to go to GMl, and then to Shapefile.
Paul

Sorry, one more question: what do You mean, with "GMI" ?
Thanks again ...
Marcos

That's GML, the standard interchange format for Web services. I'm
afraid the shift key slipped when I was typing it.

Paul

Marcos

2007-11-07 09:55:20 UTC

Basically, it is a one-way conversion. In converting from shapefile to
SVG you lose the "real world" coordinate system of the shapefile, and
move to page-oriented coordinates. It is possible that these are the
same, but there is no mechanism by which a converter could know this.
In principle, you could probably write a conversion routine using XML
conversion techniques to go to GMl, and then to Shapefile.
Paul

Sorry, one more question: what do You mean, with "GMI" ?
Thanks again ...
Marcos

That's GML, the standard interchange format for Web services. I'm
afraid the shift key slipped when I was typing it.
Paul

No problem, my mistake. However, to go from SVG to Shapefile (even
passing through GML), You however miss the "real world" data, don't
You ?

Marcos

Paul Cooper

2007-11-07 14:51:52 UTC