On 05/28/2013 05:34 PM, Lauri Kajan wrote:
Hi Ari,
I think that shouldn't be neccessary.
The gml file points to the xsd schema file
(http://xml.nls.fi/XML/Schema/Maastotietojarjestelma/MTK/201202/Maastotiedot.xsd).
In this schema those tags are defined to be "aliases" for these known
gml tags by using the substitutionGroup. So actually that
<Maastotiedot> is a <gml:FeatureCollection>. Is this supported by OGR?
I think GDAL wants the xsd to be local file for GML files. However, I
tried this and I can see GDAL finding the xsd, but failing the overall
process. Further, it seems that GDAL does not recognize the XML include tag.
Anyway, I assume it is not a simple substitution as all features should
be wrapped into gml:featureMember elements.
Ari
I'm not an xml/gml expert either so it's hard to find the problem.
-Lauri
On Tue, May 28, 2013 at 5:11 PM, Ari Jolma <[email protected]
<mailto:[email protected]>> wrote:
Lauri,
There are at least these issues with the file:
- Piste should be gml:Point
- Murtoviiva should be gml:LineString
- Alue should be gml:Polygon
- all features should be wrapped into gml:featureMember elements
- everything should be in gml:FeatureCollection
- complex geometries should be wrapped into gml:GeometryCollection
elements
With these changes and limitations I can open (a small piece) of
the file with ogrinfo. All are probably changeable by XSLT. Of
course my knowledge about GML and it's parsing in GDAL is limited,
so take this with a grain of salt.
Cheers,
Ari
the changed piece:
<?xml version="1.0" encoding="UTF-8"?>
<gml:FeatureCollection xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>>
<harvatLouhikot>
<gml:featureMember>
<HarvaLouhikko gid="733051928" dimension="3">
<sijaintitarkkuus>10000</sijaintitarkkuus>
<korkeustarkkuus>100001</korkeustarkkuus>
<aineistolahde>1</aineistolahde>
<alkupvm>2005-11-15</alkupvm>
<suunta>0</suunta>
<sijainti>
<gml:Point>
<gml:pos srsDimension="3">368845.895
7588505.642 308.292</gml:pos>
</gml:Point>
</sijainti>
<kohderyhma>13</kohderyhma>
<kohdeluokka>34200</kohdeluokka>
</HarvaLouhikko>
</gml:featureMember>
</harvatLouhikot>
<hietikot>
<gml:featureMember>
<Hietikko gid="775477697" dimension="3">
<sijaintitarkkuus>5000</sijaintitarkkuus>
<aineistolahde>1</aineistolahde>
<alkupvm>2005-11-15</alkupvm>
<sijainti>
<gml:GeometryCollection>
<gml:geometryMember>
<gml:Point>
<gml:pos srsDimension="3">368010.039
7584945.893 0.000</gml:pos>
</gml:Point>
</gml:geometryMember>
<gml:geometryMember>
<gml:Polygon>
<gml:exterior>
<gml:LinearRing>
<gml:posList
srsDimension="3">368000.000 7584931.821 370.229 368000.000
7584936.222 369.780 368001.115 7584941.126 368.906 368002.650
7584954.132 364.859 368002.478 7584969.653 361.051 368008.553
7584975.749 359.563 368016.839 7584970.791 359.517 368019.890
7584958.174 360.232 368023.171 7584944.026 362.917 368022.143
7584935.253 365.008 368016.168 7584924.893 368.340 368004.859
7584923.913 369.824 368000.000 7584931.821 370.229</gml:posList>
</gml:LinearRing>
</gml:exterior>
</gml:Polygon>
</gml:geometryMember>
</gml:GeometryCollection>
</sijainti>
<kohderyhma>64</kohderyhma>
<kohdeluokka>34300</kohdeluokka>
</Hietikko>
</gml:featureMember>
</hietikot>
</gml:FeatureCollection>
On 05/28/2013 02:06 PM, Lauri Kajan wrote:
Hello everybody,
I have tired to read gml file from National Land Suvey of Finnish
without a success.
Does anybody have any idea what's the problem?
The gml has a quite complex schema. Is this a problem for ogr?
I have tried to download all the schema files to the same folder
with the same name than the file but it doesn't work.
Here is a sample:
https://docs.google.com/file/d/0BwbdYcPHdb1pOEs1eGNiZnBhMUk/edit?usp=sharing
Thanks!
Lauri Kajan
Software Developer
Karttakeskus Ltd.
Atomitie 2
00370 Helsinki
Finland
_______________________________________________
gdal-dev mailing list
[email protected] <mailto:[email protected]>
http://lists.osgeo.org/mailman/listinfo/gdal-dev
_______________________________________________
gdal-dev mailing list
[email protected] <mailto:[email protected]>
http://lists.osgeo.org/mailman/listinfo/gdal-dev
_______________________________________________
gdal-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/gdal-dev
_______________________________________________
gdal-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/gdal-dev
