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2024-03-29T11:34:46Z
Benutzerbeiträge
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http://giswiki.org/index.php?title=Geography_Markup_Language&diff=15485
Geography Markup Language
2007-07-18T20:05:12Z
<p>Fjbehr: /* Weblinks */</p>
<hr />
<div>'''Geography Markup Language (GML)''' ist eine vom [[Open Geospatial Consortium]] bearbeitete 2-D-Vektorbeschreibungssprache. Es ist eine offene Schnittstelle zu GIS. Das Format soll nur dem Datenaustausch und der Datensicherung dienen.<br />
<br />
Es handelt sich um einen Dialekt von [[XML]] und ist dazu bestimmt, Geometrien und die zugehörigen Attribute ("Features") im Bereich der [[Geodaten]] zu beschreiben. <br />
<br />
GML wird vom Open Geospatial Consortium festgelegt. Zu den höheren Versionen zählt die ''Geography Markup Language Version 3.0'', kurz ''GML 3.0'' genannt. Inzwischen liegt GML in der Version 3.1 vor. Wie alle Ergebnisse des OCG-Prozesses frei verfügbar für jedermann.<br />
<br />
Das [[JUMP]] GML-Format (.'''jml'''), bezeichnet ein vereinfachtes GML-Format.<br />
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==Weblinks==<br />
<br />
* [http://www.ordnancesurvey.co.uk/oswebsite/products/osmastermap/technicalinformation/gml2.html British Ordnance Survey distributes data in GML 2.1.2]<br />
* [http://www.jlocationservices.com/LBSArticles/GML2.0EnablingTheGeoSpatialWeb.pdf Enabling the Geo-spatial Web]<br />
* [http://portal.opengeospatial.org/files/?artifact_id=4700 Geography Markup Language (version 3.1) is described in a Recommendation Paper from Open Geospatial Consortium available]<br />
* The GML 3.1 schema documents are available from http://schemas.opengis.net/gml/3.1.0/base/.<br />
* [http://www.oasis-open.org/cover/geographyML.html GML Artikel]<br />
* [https://portal.opengeospatial.org/files/?artifact_id=7174 OpenGIS® Geography Markup Language (GML) Implementation Specification (pdf)]<br />
* [[JUMP|JUMP - Unified Mapping Platform - JUMP includes:* The JUMP Workbench, an extensible, interactive GUI for visualizing and manipulating spatial features with geometry and attributes]]<br />
* [http://www.galdosinc.com/technology-techinfo.html Location-based Services and GML: Laying the Geo-spatial Web Foundations]<br />
* [http://www.galdosinc.com/files/MakingMapsInGML2.pdf Making Maps for the Web with GML]<br />
* [http://www.w3.org/Mobile/posdep/Presentations/GMLIntro/ Presentation by Galdos on GML to a W3C/WAP workshop]<br />
* [http://www.galdosinc.com/technology-whygml.html Why GML - Einführende Übersicht mit zahlreichen Linkhinweisen zum Thema Geography Markup Language]<br />
* [http://www.gis-news.de/papers/gml/ GML-basierte Kodierung von Geodaten]<br />
<br />
=API=<br />
<br />
* [[GML4J]] - Java API for facilitating work with Geography Markup Language (GML)<br />
<br />
<br />
<br />
=Papers=<br />
<br />
* [http://www.geoplace.com/gw/1999/0399/399svg.asp A New Breed of Web-Enabled Graphics ( Michael Gould and Antonio Ribalaygua)]<br />
* [http://www.gisdevelopment.net/technology/gis/ma03200.htm Developing an Internet-GIS Application using GML]<br />
* [http://www.gisdevelopment.net/technology/gis/ma04263.htm GML - User Perspectives - Article from Don Murray, President SAfe Software]<br />
* [http://www10.giscafe.com/presentation/presentation.php?site=GIS&doc_name=GMLDataDeployment/index.htm Impact of GML on Data Development]<br />
* [http://www.directionsmag.com/article.php?article_id=280 Is GML only for Internet GIS?]<br />
* [http://www.opengeospatial.org/docs/02-023r4.pdf OGC - GML Beschreibung (engl., pdf)]<br />
<br />
=Specifications=<br />
<br />
* [http://www.opengis.org/docs/00-029.pdf GML 1]<br />
* [http://www.opengis.org/docs/02-069.pdf GML 2.1.2]<br />
* [http://www.opengis.org/docs/02-023r4.pdf GML 3.0 Specification]<br />
<br />
=Tools=<br />
<br />
* [http://www.thecarbonproject.com/products/gaia.html GAIA: WMS/WFS/GML viewer for Windows - OGC compliant viewer]<br />
<br />
=Beispiel=<br />
<br />
<pre>&lt;?xml version='1.0' encoding="ISO-8859-1"&nbsp;?&gt; <br />
&lt;wfs:~FeatureCollection <br />
xmlns="!http://www.ttt.org/myns" <br />
xmlns:myns="!http://www.ttt.org/myns" <br />
xmlns:wfs="!http://www.opengis.net/wfs" <br />
xmlns:gml="!http://www.opengis.net/gml" <br />
xmlns:ogc="!http://www.opengis.net/ogc" <br />
xmlns:xsi="!http://www.w3.org/2001/XMLSchema-instance" <br />
xsi:schemaLocation="!http://www.opengis.net/wfs ../wfs/1.0.0/WFS-basic.xsd <br />
&nbsp;!http://www.ttt.org/myns <br />
&nbsp;!http://wms1.ccgis.de/cgi-bin/mapserv?<br />
map=/data/umn/germany_demo/germany_demo_wfs.map&amp; <br />
SERVICE=WFS&amp; <br />
VERSION=1.0.0&amp; <br />
REQUEST=~DescribeFeatureType <br />
TYPENAME=Postleitzahlbereiche"&gt; <br />
&lt;gml:boundedBy&gt; <br />
&lt;gml:Box srsName="epsg:31467"&gt; <br />
&lt;gml:coordinates&gt; <br />
-1.000000,-1.000000 -1.000000,-1.000000 <br />
&lt;/gml:coordinates&gt; <br />
&lt;/gml:Box&gt; <br />
&lt;/gml:boundedBy&gt; <br />
&lt;gml:featureMember&gt; <br />
&lt;Postleitzahlbereiche&gt; <br />
&lt;gml:boundedBy&gt; <br />
&lt;gml:Box srsName="epsg:31467"&gt; <br />
&lt;gml:coordinates&gt; <br />
7.089682,50.732651 7.113803,50.749050 <br />
&lt;/gml:coordinates&gt; <br />
&lt;/gml:Box&gt; <br />
&lt;/gml:boundedBy&gt; <br />
&lt;gml:polygonProperty&gt; <br />
&lt;gml:Polygon srsName="epsg:31467"&gt; <br />
&lt;gml:outerBoundaryIs&gt; <br />
&lt;gml:~LinearRing&gt; <br />
&lt;gml:coordinates&gt; <br />
3365496.566430,5624978.448441 <br />
3365521.124423,5625013.908323 <br />
3365565.223312,5625084.526916 <br />
3365629.214635,5625160.583843 <br />
3365723.363724,5625232.038551 <br />
3365777.825572,5625277.769189 <br />
3365867.287406,5625324.293319 <br />
3366081.776121,5625376.954252 <br />
3366242.558916,5625409.342895 <br />
3366447.711508,5625422.348649 <br />
3366677.856852,5625435.565091 <br />
3366826.787403,5624801.669664 <br />
3366855.035066,5624566.573031 <br />
3366925.451142,5624182.224968 <br />
3366715.750264,5624144.261254 <br />
3366650.863977,5624128.508596 <br />
3366600.955317,5624112.804621 <br />
3366531.383108,5624081.886701 <br />
3366506.401347,5624071.486493 <br />
3366442.053224,5624025.159618 <br />
3366392.576627,5623979.714963 <br />
3366347.846258,5623958.781918 <br />
3366303.629382,5623898.347600 <br />
3366254.562142,5623822.330657 <br />
3366204.783816,5623801.958859 <br />
3366170.529172,5623746.359034 <br />
3366096.979434,5623625.121634 <br />
3365763.215463,5623795.455427 <br />
3365500.779929,5623942.335246 <br />
3365218.803228,5624068.496482 <br />
3365237.785434,5624138.909926 <br />
3365251.877503,5624209.028949 <br />
3365265.770476,5624284.252033 <br />
3365279.898174,5624354.790930 <br />
3365313.834894,5624430.338190 <br />
3365342.788540,5624515.791264 <br />
3365381.492255,5624611.601424 <br />
3365424.880011,5624732.334672 <br />
3365458.518013,5624832.944095 <br />
3365502.496403,5624908.664231 <br />
3365531.735324,5624963.958282 <br />
3365496.566430,5624978.448441 <br />
&lt;/gml:coordinates&gt; <br />
&lt;/gml:~LinearRing&gt; <br />
&lt;/gml:outerBoundaryIs&gt; <br />
&lt;/gml:Polygon&gt; <br />
&lt;/gml:polygonProperty&gt; <br />
&lt;gid&gt;3695&lt;/gid&gt; <br />
&lt;oid&gt;15223704&lt;/oid&gt; <br />
&lt;plz99&gt;53111&lt;/plz99&gt; <br />
&lt;item_plz&gt;53111&lt;/item_plz&gt; <br />
&lt;buffer_&gt;500&lt;/buffer_&gt; <br />
&lt;/Postleitzahlbereiche&gt; <br />
&lt;/gml:featureMember&gt; <br />
<br />
&lt;/wfs:~FeatureCollection&gt;<br />
</pre></div>
Fjbehr