Geography Markup Language (GML) is an OGC Standard for expressing geographical features.

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OpenLayers - Get LayerName from GML Response object

I am using the WMGetFeatureInfo control in OpenLayers to select items from my layers and return GML. I use this to get an attribute from the GML; var val = evt.features[0].attributes.UID; //Where ...
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1answer
294 views

Editor to work on GML files

I am looking for a good way to work on GML files and would appreciate some personal experience. At the moment I am using nXML or SGML mode for Emacs but I wouldnt mind having an IDE/Emacs mode/... ...
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140 views

Linux Tool to visualize CityGML file

I am looking for a linux program that allows me to visualize CityGML models (3D). I have tried a whole bunch so far (most of them via wine but also native ones) but I couldn't get a single one of them ...
4
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1answer
123 views

What is the best format to encode polygons such as lakes?

I am looking for a standard format to encode polygons, such as lakes, in one file that is easy to create and common so that others can use it in different GIS systems. Every file will contain data on ...
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1answer
543 views

How to export a geojson file with correct order of coordinates?

I was testing rendering of data via GitHub in geojson format, because I wanted to use it for INSPIRE data. INSPIRE data are in GML 3.2.1 format. I've downloaded one of datasets from ...
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42 views

Problem with taverna

I want to use taverna to call OGC WFS,and the file returned from WFS is GML, but what I want is SVG,so I have to convert GML to SVG by using taverna.The Method I used ExecuteProcess_gml2svg,which ...
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252 views

GML v3 loading with OpenLayers

I rewrote the question to be more readable: I saw GML format is just a little more 'evolved' than KML. Am I right? Which format is to be considered more standard, more supported and convenient to ...
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1answer
379 views

How to write GML and GeoJSON features while retaining attributes in .NET?

I am developing a .NET project [C#] that needs to export/write features as GML and GeoJSON, including, of course, the attributes; data could queried by a database or manually entered. I checked ...
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1answer
50 views

GML Simple Feature compliance test

I'm in the process of defining a GML schema from a database schema, the idea is for it to be GML simple feature compliant. However I can't find a way to confirm this compliance other than reading the ...
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1answer
914 views

OS Vectormap GML files into PostGIS

I am having difficulty in efficiently dealing with OS Vectormap data that comes in GML format. In the past I used the Plugin for QGIS (OS GML Tools) to batch convert folders of compressed GML (.GZ) ...
2
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1answer
570 views

Programmatic conversion between GML and GeoJSON

I am modifying a .Net (C#, MSSQL) system to add some geography that I'd like to display on a leaflet map. I had originally expected to save GeoJSON directly into text strings in the DB, but after ...
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1answer
229 views

Can I append to different tables using ogr2ogr?

I have been through many related questions and links but I am still confused as to how/if this is achievable. So, I have defined tables in my postgis database and I would like my ogr2ogr commnand to ...
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1answer
430 views

GML - Multi-geometry validation

I'm doing the test to introduce multiple geometry in a WFS service using GML. For now the simple geometry is functional, but I still have some bugs with multiple geometry. I think it may come from my ...
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2answers
625 views

How to create shapefile from OS MasterMap data using ArcGIS Desktop 10?

How do I create a shapefile from OS MasterMap data in Arcgis 10? I have tiles from the Ordnance Survey Site and would like to create a topomap from the existing tiles. These tiles contains the ...
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0answers
120 views

Issue loading GML with Openlayers no obvious error

i'm newbie using openlayers, there are no error in my firebug, but, my GML can't show in my browser, what should i do? this is my GML from result of converting my shapefile with ogr2gui : ...
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1answer
258 views

GeoServer WMS OGC-filter fails with “I dont understand the tag: gml:Polygon”

I'm trying to construct an OGC filter to pass to a WMS GetMap request to GeoServer but I can't seem to do it. The goal is to show the parts of the layer that intersects with a supplied polygon. ...
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0answers
58 views

How to obtain the center of Vector layer created using WFS query?

I created a vector GML layer using a WFS query with a filter. The layer renders fine . However, the layer does not appear to have any features associated with it (layer.features.length is 0 ) I need ...
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2answers
1k views

Using Python to parse an XML containing GML tags

I am trying to write a python script which pulls GML tags out of an XML file and formats them into WKT for inserting into a PostGIS database. I have been successful in doing so for an XML containing a ...
2
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1answer
531 views

Problem with writing the srsName into gml output in OpenLayers

I am trying to write out my geometry in gml format after it is drawn in OpenLayers. Actually it is working fine, I get the gml like this: <gml:Polygon> <gml:outerBoundaryIs> ...
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1answer
210 views

How to modify gml using openlayers?

i have to edit GML file in openlayers but i am not able to do same. please guide me with some code if possible. i also have to save edited data to hard disk using openlayers Thanks for any help.... ...
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0answers
649 views

What is the best way to convert WKT String to GML String

What is the best way to programatically convert WKT String to GML String? Every reasonable library (at best available in some Maven repository) can be used. Till now I came up with this solution ...
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1answer
446 views

How to add GML files in geoserver 2.2.2?

How can I add GML files to a GeoServer 2.2.2 instance? How can edit them "on the fly" and save the results back to the server using OpenLayers? I would appreciate examples if possible. I'm adding a ...
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2answers
428 views

How to publish a GML file as a Web Feature Service (WFS)?

I am interested in publishing a GML file as a WFS. I don't want to use a database like PostgreSQL. What would be the rough steps I need to do for that? I like to use open source software (geoserver). ...
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0answers
217 views

PostGIS 2.0 st_geomfromgml using LineString fails with invalid GML representation

I am attempting to insert a geometry into a table using the st_geomfromgml function. The GML is being sourced from a Geoserver WFS request. The function call looks like this ...
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1answer
322 views

How to write GML parser with Geotools?

I wrote a Parser for a GML file from the OS Mastermap with geotools 8.4. With one part I still have a problem. This sniplet of the xsd: <complexType name="RoadLinkType"> ...
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1answer
483 views

How to debug ogr2ogr ERROR 1: Did not get at least 2 values or invalid number of set of coordinates?

I'm trying to convert a government data contour GML (http://geo.data.linz.gv.at/katalog/geodata/hoehenschichten/2011/1m-Hoehenschichten.gml) to Shapefile. It seems like it was created by FME: ...
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2answers
422 views

Applicable OpenLayers settings for WFS layer

I am trying to display a WFS layer on an OpenLayers map. Here are the appropriate portions of GETCAPABILITIES response. <ows:Operation name="GetFeature"> <ows:DCP> <ows:HTTP> ...
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1answer
378 views

WFS Layer in OpenLayers queries server for data but doesn't display the data

I have added a WFS layer to a map and can see (using Fiddler) a request being made to the server for the layer data. The server uses GML as the data format and the data being returned is valid. ...
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5answers
3k views

GML, KML, GeoJSON - Speed rendering 3109 polygons?

I am working with Geoserver, serving U.S. Lower 48 counties to openlayers (3109 polygons - lots more vertices). The counties are loaded into a postgis database. I am curious about developer ...
3
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1answer
394 views

How to couple GeoTools GML bindings for encoding to GML 3.1.1

I've successfully created GeoTools (8.3) bindings for parsing and encoding XML bindings as described in their tutorial: http://docs.geotools.org/latest/userguide/library/xml/internal/bindings.html I ...
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4answers
2k views

What are the advantages either way between GML and Shapefiles?

After a good start many months ago of getting into GIS through QGIS, I had to drop what I was doing and did not touch it for quite some time. I am now able to get back into it and have a need to load ...
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1answer
246 views

How can I get KML into JTS TestBuilder?

JTS Topology Suite TestBuilder supports WKT, WKB and GML inputs. What's a quick and easy way to get the geometry for a KML feature into one of these formats for input into JTS TestBuilder? For ...
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1answer
346 views

how can i render geojson format and gml format?

I can show wms png format my map but i didnt render jeojson and gml format by the way my url is correct service. İn additonal i used same code in my local and i can render local geoserver . plz show ...
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0answers
451 views

OGR-Driver GML axis order handling (GDAL, QGIS)

By default the OGR-Driver will swap the axis order to longitude, latitude for geographic coordinate systems. "Since OGR 1.8.0, the GML driver has coordinate system support. This is only reported ...
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1answer
266 views

openlayers load local gml

I'm trying to load a simple gml file with openlayers, but it doesn't load. Pretty sure it's a simple issue, but I figure out what's wrong. Thanks in advance, Pedro var meu = new ...
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1answer
1k views

Rendering GML in QGIS 1.9.0

I have a set of GML geometries (see here), which I try to load in QGIS. The set contains both points and polygons, but when loaded into QGIS, only points are shown. I tried to follow this thread, but ...
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1answer
628 views

GML and GeoJSON vector layer can not display in Firefox and Chrome

I have following codes. It works perfectly in IE (GML and GeoJSON vector layer was loaded), but not in Firefox and Chrome without any errors noticed. Please help me to fix this problem. Here is the ...
3
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1answer
456 views

OSS java approach to convert Shapefile to GML

We've got a project coming up where we need to upload .zip of a shapefile, join the .dbf to some lookup tables, join to other tables also uploaded (one to many attributes for each feature), and ...
7
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4answers
5k views

How do I use ogr2ogr to convert a GML to shapefile in Python

I am trying to convert a GML to an ESRI shapefile using ogr2ogr utility in a python script. I have successfully installed the GDAL/OGR package via osgeo but I am now struggling to find/understand ...
4
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1answer
463 views

How to use the OGR/GDAL configure options in QGIS python environment

I’m looking for a solution how to use the OGR/GDAL configure options (--config) in the qgis python environment. http://trac.osgeo.org/gdal/wiki/ConfigOptions Setting special configure options is ...
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1answer
297 views

Does a polygon in a layer intersect with another polygon in the same layer [closed]

I am a CS major with little experience in GIS. I am working on vector polygon overlay. Looking at GML and shapefile data, I realized that a map is made up of a large number of polygons. Does a polygon ...
4
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1answer
544 views

Why are the polygons in my GML not rendered?

I tried to view GML files from download services ( http://services.cuzk.cz/gml/inspire/cp/epsg-5514/ ) and I have a problem with viewing of polygons from layer "CP:CadastralParcel". This Layer ...
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1answer
321 views

How can I import geometries from an invalid GML quickly?

I have the following gml geometry : <gml:Polygon xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:2154"> <gml:exterior> <gml:LinearRing> <gml:posList ...
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1answer
609 views

Converting a shp file to a list of latitudes and longitudes

I have a shp file with the latitudes and longitudes for the boundaries for various geographic regions. I'd like to convert the shp file into lists of just latitudes and longitudes for the regions. ...
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1answer
379 views

How to convert a CompositeCurve to a NetTopologySuite MultiLineString?

I would like to use NetTopologySuite to convert a CompositeCurve to a MultiLineString. I would like to find some code which shows how to convert this to a MultiLineString: <gml:CompositeCurve ...
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1answer
375 views

Can use of GML Simple Features profile by Web Feature Service (WFS) be advertised?

The ArcGIS 10.1 documentation on Working with WFS services says: The GML Simple Features profile is recommended for use with ArcGIS and is the basis for WFS support in ArcGIS. Is there an easy ...
4
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8answers
4k views

How to get OS Mastermap data into QGIS?

I have been tasked with getting OS Mastermap topography data into QGIS system to compliment our other map layers. The data comes in .gz format. Which I am told needs to be decompressed before I can do ...
2
votes
1answer
299 views

Service URL for Web Feature Service (WFS) using GML Simple Features profile?

Does anyone know of an "almost always available" Service URL for a Web Feature Service (WFS) using GML Simple Features profile? I'm keen to test WFS client capabilities without having to configure a ...
5
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1answer
295 views

How to convert WFS request to GML

I have the following: var popProto = new OpenLayers.Protocol.WFS({ url: WFS_HOST, version: "1.1.0", featureType: layerName, featureNS: namespace, srsName: "EPSG:4326", ...
2
votes
3answers
1k views

How to merge several GML files into one

I have a folder of GML files that I want to be able to merge to create one GML file that I can then view. I have tried this using the code described but searching for GML in this website without ...