Questions tagged [gml]
Geography Markup Language (GML) is an OGC Standard for expressing geographical features.
330
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Reading data to geopandas using WFS - GML format
This relates to the question here:
Reading data to geopandas using WFS?
Is there a way to to do the same with a service that does not supply the data in GeoJSON format, but in GML-format?
The ...
0
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1
answer
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Edit and transform XML/GML files
I'm searching for an approach as someone who just started to work with geodata recently.
It's about the following situation: I received several XML files. I need to perform a geometric difference ...
0
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1
answer
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Batch convertion of .tab files to a single .gml using ogr2ogr
My task is to convert .tab files from a directory (C:\Users\Vadim\Downloads\vec\MapInfo\snp) to a single GML file (snp.gml).
I use OSGeo4w Shell.
So I wrote a following command:
ogr2ogr -f "GML" C:\...
2
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1
answer
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GML axis order problem in QGIS
Is there any reason why QGIS swap axis order if CRS (EPSG:3908) is defined inside GML, for example:
<au:geometry>
<gml:MultiSurface gml:id="_42d05737-123d-4a52-a655-aef968cd9511" srsName=...
0
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1
answer
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readFeatures from GML in OpenLayers4
I have an XML data. I simply need to get coordinates of a feature from XML to zoom the map on it.
But when I try to read it I get nothing. What am I doing wrong? Have any idea?
//got a text from a ...
1
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2
answers
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Issue with FEMA OGC Web Feature Service returning HTTP 400 error when attempting to download GML file
I'm trying to use an OGC web feature service in some software I am involved in developing. The service is described at the bottom of this page: https://hazards.fema.gov/femaportal/wps/portal/NFHLWMS
...
3
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1
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Geoserver - PostGIS : WFS-Transaction update exception error-Parsing failed for Point:
I tried to perform a transaction update, but it failed with this exception message:
<owsExceptionReport.xsd">
<ows:Exception exceptionCode="NoApplicableCode">
<ows:...
1
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1
answer
386
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Transform complex features into simple features GML with HALE
Background information:
I'm working with complex GML features and would like to publish my data as a WFS service through GeoServer. I know there is already the application schema support (app-schema) ...
1
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1
answer
528
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GeoTools: Encode into GML 3 not working
I want to use GeoTools to convert collection of SimpleFeature objects to GML 3.2.1 geometry.
However, I'm dealing with this:
Creation of XSD works with both GML 2 and 3.
Creation of GML works only ...
2
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0
answers
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GML/SVG for indoor map in OpenLayers 4?
I am new to GIS world and trying to incorporate OpenLayers with GML or SVG.
I am building a map engine and one of the features should be support of indoor maps. It can be accomplished with a static ...
2
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2
answers
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WFS filter for property name
I need help with WFS filtering for GML. I want to filter only by one property (name of administrative unit) - that is all.
Lets say I would like to get the second member of this GML:
http://services....
0
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1
answer
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Adding all polygons in GML from MapServer to openlayers using WFS
I want to show the contents from MapServer (returned as GML given below) as WFS layer in OpenLayers map (OpenLayers v5.0.0). The problem is that only one polygon is added to the map. Here is the code ...
2
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0
answers
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Transform GML to Geometry (PostGIS) in GeoKettle
How can I transform GML (saved in XML file) to Geometry type?
I've noticed function 'Geometry from GML' in Calculator but it needs string value with GML. Is there any way to extract it from XML file?...
2
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1
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Geoserver WFS Feature Schema Enumeration of Strings
Basically, I'm trying to limit the values that can be provided by a WFS transaction. So the original schema I've got for this simple test feature here
<xsd:complexType name="secondfeatureType">
...
0
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1
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330
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Why can't I load a WFS into Openlayers: "TypeError: null is not an object (evaluating 'Ob(d).b')"
I am teaching myself the use of Services (WFS) in and OpenLayers itself. As far as I know I managed to get a proper gml-file (GML2, I hope [EDIT: It is GML 3.1, I figured]) from a governmental server ...
1
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0
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OpenLayers WFS service with GML
I'm trying to get features from WFS service, this service using stored queries. I've managed to retrieve data both with axios and XMLHttpRequest. But the problem in the reading features and showing ...
2
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0
answers
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Software support for GML 3.3 Linear Referencing?
Are you aware of any software supporting import/export of Linear Referencing data in GML version 3.3 format?
Apparently no software application, proprietary or FOSS, currently supports it explicitly. ...
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2
answers
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How to assign .xsd for ogr2ogr
GMLAS link:
http://www.gdal.org/drv_gmlas.html
I want to convert my gml file to shapefiles. But our gml files was created by custom gml schema. We have their application schema, xsd. But i don't know ...
0
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0
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Converting Personal geodatabase to GML format using ArcGIS Desktop? [duplicate]
I am working on ArcGIS 10.3.
Does anyone know how to convert a personal geodatabase into a GML format?
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2
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456
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Geometry not showing when importing Dutch BRT-files (GML)
After importing a couple of gml files (Dutch BRT-files) into QGIS I noticed that some of the layers didn't seem to contain any geometry, the database (attribute table) is there, but no geometry is ...
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3
answers
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Reading GML features in OpenLayers 4?
I use OpenLayers 4.6 and I want to read a feature from GML string. The GML looks like:
<?xml version="1.0" encoding="UTF-8"?>
<gml:Polygon xmlns:gml="http://www.opengis.net/gml"
xmlns:...
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1
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GeoTools includes repeated prefix in GML output
When attempting to write out GML encoded features that were originally collected using the Geotools WFS plugin (gt-wfs-ng), it looks like the GML output is incorrectly duplicating the feature's prefix ...
4
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1
answer
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Convert gml to raster in QGIS
I have a dataset of type citygml (*.gml). It includes information about buildings and their rooftypes.
you can find a sample file here: https://www.opengeodata.nrw.de/produkte/geobasis/3d-gm/3d-...
1
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0
answers
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WFS in OpenLayers4 returns data but doesn't display any [duplicate]
I can't get this WFS to work.
I tried to stick to the OL-WFS examples - no luck.
let vectorLayer = new ol.source.Vector({
format: new ol.format.GML(),
url: function(extent) {
return 'https://...
1
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0
answers
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Error: The requested Style can not be used with this layer
I'm trying to calculate the area of a polygon using the code from this page and I'm getting the following error
The requested Style can not be used with this layer. The style specifies an ...
1
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3
answers
691
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Getting writer in FME to output as appointed filetype while using FilenamePartExtractor?
My goal is to merge all shapefiles in the same folder and outputting them as a gml with name of the folder.
So it looks like this:
Main Dir
Set1
roads.shp
buildings.shp
Set 2
roads.shp
...
I ...
0
votes
0
answers
161
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Using WMSGetFeatureInfo() of OpenLayers in Firefox?
I'm trying to read features from the response of an AJAX request using new ol.format.WMSGetFeatureInfo().readFeatures(parameter).The response format is application/vnd.ogc.gml (XML). The thing is that ...
2
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1
answer
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What is the conceptual meaning of featureMember in GML?
In GML there is this tag:
<gml:featureMember>
I am looking for the conceptual meaning of it, but i only find syntax explanations.
0
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1
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Check whether GML contains elevation info?
How can I check in QGIS whether a GML file has elevation information, or z coordinates?
It definitely has some overlapping polygons, but I'm not sure whether the ordering of the overlap is specified ...
1
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0
answers
73
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Use GeoTools to read WaterML files
I want to read WaterML 2.0 time series. I am totally new to WaterML but I read it rely on GML 3.2. It would be great to use GeoTools to do that, maybe extending the GML classes. Is there some docs or ...
0
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1
answer
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Add GML Layer in OpenLayers 4
I'm using OpenLayers 4 to build a web map. Now I'm trying to add a GML layer to the map but only one feature of the layer/GML is painted in the map. So I don't know what could be wrong.
The way I am ...
3
votes
1
answer
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Load LoD2 files into QGIS
is it possible to load the geometry of LoD2 files in CityGML format (gml:LinearRing from bldg:GroundSurface) as GML layer in QGIS?
Here is an example content of a citygml file:
<?xml version="...
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1
answer
261
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Geoserver WFS-T insert exception
I'm creating a new WFS-T feature but I'm getting the below exception when I try to send the feature:
No such feature type http://IP:PORT/geoserver/CARBONITA:bairros
link to gist:
https://gist....
1
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0
answers
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feature with multiple id used for style
I have features with multiple themeID, for example, themeID=49 and themeID=53, and when I load them into qgis it shows attribute themeID=(2:49,53). The problem is that I use themeID in sld to choose ...
1
vote
1
answer
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OGC Filter Specification in Xpath
I've got some XML documents which conform to a known schema which include geometries in GML format.
I'm looking to perform validation on the XML using XSD and Schematron, but I'll need some way of ...
1
vote
0
answers
91
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Encode a shapefile in gml 3.2 [duplicate]
I am not so seasoned about gis and geotools, I am trying to encode a feature collection obtained by a shapefile in gml 3.2. Here is my code:
@Test
public void transformAccumuliDiFranaShapeToGml32() ...
0
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1
answer
406
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Deal with large GML files with GeoTools
I am not so seasoned at GeoTools libs, I am trying to transform a large (near 60K features) GML file. I want to change its CRS and features coordinates accordingly. The code I have is basically this:
...
0
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1
answer
545
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Convert GeoJSON to GML using an old GeoTools library
I'm trying to convert a GeoJSON file to GML 3.1.1 using an old org.geotools lib. geotools lib are 2.7.0 version. Sadly, upgrading is not an option. Here is the relevant part of my code:
...
2
votes
0
answers
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Protect spatial data with digital signature
I've been asked to provide a solution to protect spatial data (format .shp) with digital signature that are bundled together into a single file, much like signed PDF for example. I've been googling ...
0
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1
answer
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GML vector layer not rendering polygons
I regularly use land registry data from https://www.gov.uk/government/collections/download-inspire-index-polygons however at present the .gml, when adding a vector layer, renders points and not ...
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Add Points and Polygons to geoscript layer and write as GML
I have some geoscript code combines WFS and shapefile polygon layers together and writes the result as a GML file. It works fine. However, the client requires a new feature which should combine ...
5
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0
answers
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How to set up Geoserver app-schema feature chaining?
I am using Geoserver 2.12 with the application schema plugin to map a PostGIS database schema to the GeodesyML schema. I need to set up a WFS request that returns GeodesyML output such as:
<wfs:...
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0
answers
427
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Upload GML to Geoserver as Layer through REST
I have to upload a GML file to my geoserver through REST. I tried to use importer but it doesn't work (even manually). More specifically, the importer module never generate tasks automatically for GML....
2
votes
2
answers
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Creating a Geoserver App-Schema mapping file for GeodesyML
EDIT: This appears to be a version dependent issue! When I posted the question I was using Geoserver 2.11.1. I upgraded to the 2.12 nightly SNAPSHOT and I can now general GeodesyML output. The problem ...
0
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1
answer
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Where to find a Placename ID for Tennengebirge for use in GML?
I am new to GML and trying to create an Instance file - I need the ID for Tennengebirge but I am not sure how to find the Inspire ID for this Protected Site?
13
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1
answer
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Is srsName of "EPSG:4326" spec compliant in GML 3.1 / 3.2?
I sometimes see srsName="EPSG:4326" in GML documents (e.g. https://postgis.net/docs/ST_GeomFromGML.html, although my particular source is not public). The intent (except perhaps for axis order that ...
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0
answers
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Drawing GML data in OpenLayers2 [closed]
I have a simple application that uses OpenLayers 2.13.1 to draw GML data pasted in a text box. There is already some default GML preloaded in textarea and it works fine. When you press "Add feature" ...
2
votes
1
answer
1k
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Reading in a single polygon from a shapefile
I have a shapefile/GML file with many thousands of polygons insides a specific layer.
I know the set of IDs that reference the set of polygons that I want to get the coordinates data from. Is there a ...
1
vote
1
answer
913
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Openlayers 3 + WFS GML2 layer wrong projection and displaying on wrong location
I have requested vector layer through WFS GetFeature from GeoServer in GML2 format but when displaying WFS layer its showing on different place. same layer i have requested in format Geojson its ...
0
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1
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212
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How to convert my GML/KML/SHP files into deegree workspace?
I am newbie in geographic and want to convert my GML file to deegree workspace.
What I did so far
I have download deegree and install it on local.
Run the application and its service
Now, I want ...