Questions tagged [ogc]
A geospatial standards organization known as the Open Geospatial Consortium
173
questions
1
vote
1answer
37 views
GeoServer SLD Functions
I am in need to use a postgres query inside an sld file. Based on the documentation, before testing the now() function, I decided to make a test with the max function. I want to style only the max ...
1
vote
1answer
45 views
Can a self-intersecting banana polygon be made OGC-compliant in an Azure SQL Database using spatial functions?
I'm an experienced Postgres / PostGIS user fiddling with SQL Server / Azure SQL Database spatial capabilities for the first time.
Banana Polygon
For the banana polygon pictured above, I believe there ...
2
votes
0answers
28 views
OGC CSW Filter Capabilities Comparison Operators
I'm a bit confused with OGC standards related to CSW GetCapabilities for Filter Encoding.
A typical CSW GetCapabilities Request
http://www.geocatalogue.fr/api-public/servicesRest?service=CSW&...
2
votes
1answer
40 views
Geometry data type Binary storage description
I'm looking for some low level information or reading or reference material which explains how most GIS databases store the geometry data type in binary form, because - I never really investigated it ...
1
vote
1answer
9 views
Intersect with Linestring rather than Polygon
The code below filters by given polygon coords but I need to do the same except with a linestring. How do I find polygons that intersect with a polyline?
<ogc:Filter>
<ogc:Intersects>
...
5
votes
1answer
61 views
Where are the WKT types CIRCULARSTRING, COMPOUNDCURVE etc actually defined?
I'm trying to find the actual definition of the curve types supported by PostGIS in WKT.
PostGIS's documentation refers to the " SQL Multimedia Applications Spatial specification":
The SQL ...
1
vote
1answer
31 views
OS Features API: Filtering by Intersects with Polygon
I'm trying to use the OS Features API to retrieve Greenspace within a Polygon. The OS example here demonstrates how this is supposedly possible, but when I try the same I cannot retrieve features.
I ...
0
votes
0answers
24 views
WFS filter without specifying exact geometry structure
I'm trying to query a WFS-server for polygons with an Intersects-filter. The problem is that the server does not recognize "MultiSurface" or "surfaceMember" objects in a query, ...
3
votes
1answer
64 views
Polygon intersection giving a GeometryCollection of only LineStrings, and the wrong dimension
I have a case where I want to create a difference between two geometries, and store it my db. I later need to check for conflict between geometries in the db, and for that I check two things: if there ...
0
votes
1answer
22 views
OGC API Processes returns error 500 or 400
I am testing the following OGC API endpoint on demo pygeoapi server
https://demo.pygeoapi.io/master/processes/hello-world/jobs
following the documentation page 32
I post the following JSON body:
{
...
2
votes
1answer
117 views
Inconsistencies in features count retrieved while consuming a WFS webservice
GDAL approach
I'm retrieving data using GDAL with the following
ogr2ogr -f GeoJSON basol.geojson \
--config OGR_WFS_PAGING_ALLOWED ON \
--config OGR_WFS_PAGE_SIZE 800 \
--...
1
vote
1answer
12 views
GetCoverage request - don't load result into memory and directly to hard drive
I'd be super grateful for any pointer to some resource, or any other kind of help. I want to make a GetCoverage-request against a server and download more or less 24 GB of data. In R I would do ...
3
votes
1answer
194 views
See WFS or WMS corresponding full http request in QGIS when a layer was added from any of these services
I have added both a new WMS and a new WFS server into a QGIS project, by specifying a generic GetCapabilities URL in the appropriate sections in the browser panel:
After that, I am able to add some ...
0
votes
1answer
159 views
Factory error while trying to build DataStore with GeoTools
I am creating a simple java program that will handle the response of my WFS OGC server and display the image behind a given link.
The link I use for generating an image:
http://localhost:8180/gss/...
0
votes
1answer
34 views
How to call GetLegendGraphics and hide items not in map?
I need to show a legend from Geoderver layer but wanto to show it only for elements actualy on map. I've found this but seems it not work for me.
Here is my test case:
https://geoservicos.ibge.gov.br/...
3
votes
1answer
70 views
When generating WMS service in ArcGIS random numbers are added to the layer name
I have an mxd file. Each time I share/publish a WMS service to the ArcGIS server as WMS, random numbers are added to the layer name. For example here is added number 8950 at the end of the <Name>...
0
votes
0answers
77 views
PyQt5: Wipe XYZ Connections
I am trying to remove all the xyz connections in a QGIS3 project via PyQt5. I am hitting the following error for the code bellow:
for group in getGroupXYZ(self): NameError: name 'getGroupXYZ' is not ...
3
votes
1answer
122 views
What is difference between OGC and ISO standards - why do some open specs carry both standards?
A good example is the Simple Feature Access - "OpenGIS® Simple Features Access (SFA), also called ISO 19125". Why use one over the other? And why have both?
0
votes
1answer
43 views
Limit access to WMS service after number of requests [closed]
Is it possible to limit access to WMS service for users who made more than X number of requests?
Is there any way this can be done?
0
votes
2answers
180 views
Why the integration of pygeoapi "OGC API Features" in QGIS 3.14 is not working?
I'm using pygeoapi as my server, and I'm having troubles with the connection of QGIS (3.14.0-Pi). I can see the list of layers available when I connect with my server from QGIS, but when I add to the ...
0
votes
0answers
164 views
Enable SSL in QGIS server
Context
I have a dockerized QGIS server project running and serving tiles through an OGC WMTS.
E.g. this URL:
http://{baseurl}/?SERVICE=WMTS&VERSION=1.3.0&REQUEST=GetTile&LAYER={...
2
votes
0answers
348 views
Query a QGIS server WMTS using a RESTful URL as defined by the OGC
Context
I'd like to use the WMTS from a QGIS server to serve a raster image as a base map in OpenStreetMap.
Description of the issue
I have set up a QGIS server to serve my raster image. Both WMS and ...
2
votes
2answers
103 views
Feature Identifiers in WFS
Almost all of the WFS/WFS-T servers, the feature identifiers -represented as gml:id in the XML document- that I have come across were in this format: [LayerName].[IntegerFeatureID], e.g., ...
0
votes
1answer
100 views
Mapbender: failed to load WMS-layer / target elements not defined
After creating a WMS (WMS 1.3.0) in Geoserver (2.15.1) I cannot load the WMS service in Mapbender (v. 3.0.8.1).
Original WMS-URL:
http://localhost:8082/geoserver/ows?service=wms&version=1.3.0&...
2
votes
1answer
302 views
Relationship between WMS styles and layers parameters for GetMap request in WMS 1.3.0?
Here is the description which I coped from geoserver
layers Yes Layers to display on map. Value is a comma-separated list of layer names.
styles Yes Styles in which layers are to be rendered. Value ...
1
vote
0answers
175 views
What is a valid WMTS Capabilites TileMatrixLimits element if the TileMatrixSet MatrixWidth or MatrixHeight is 1
In a OGC WMTS 1.0.0 capabilities document, part of the TileMatrixSetLink is the TileMatrixSetLimits element. It contains a list of TileMatrixLimits elements, which in turn specify the dataset extent ...
1
vote
0answers
59 views
Implicit geometry typecast via trigger
Because OGC SFS is relatively strict when it comes to mixing Geometries with their MULTI- Counterparts, we came up with a solution to store everything as MULTI... and convert incoming geometries via ...
0
votes
1answer
88 views
WCS request for large raster
I am new to using OGC services and am attempting to extract a large tiff using the following URL request:
http://gis.dnr.alaska.gov/terrapixel/cubeserv/ortho?DATASTORE=SDMI_ORTHO_RGB&SERVICE=WCS&...
4
votes
1answer
586 views
Exporting GeoPackage layer to GeoJSON changes CRS from WGS 84 EPSG:4326 to OGC:CRS84
I'm attempting to convert a polygon layer from GeoPackage format to GeoJSON in QGIS 3.10.1. The original layer has a coordinate reference system of WGS 84 (EPSG:4326) which is what I need. Yet the ...
2
votes
1answer
147 views
FGDB Domains - Exporting the full stack to OGC Format
I want to convert a FGDB into an OGC Data format that: keeps domains and subdomains , keeps data types and is portable. Is this possible at all?Some answers below refer to geopackage, but I havent ...
1
vote
0answers
479 views
ST_Latitude and ST_Longitude functions do not return exact values in MySQL [closed]
I tried to collaborate on this question from the Stack Overflow site.
The ST_Latitude and ST_Longitude functions (equal ST_X and ST_Y) of MySQL (version 8.0.17) returns a non-exact value for certain ...
0
votes
1answer
31 views
Clarifying feature references in WFS?
I want to clarify something about feature references in WFS 2.0 standard (OGC 09-025r1 document)
Do I understand correctly, that "resolve feature reference" means "get (remote or local) feature by ...
0
votes
1answer
293 views
WCS report TIFF not supported in GeoServer
I have a WPS running in GeoServer but the requests fails due to a exception:
The request to sum all values in a region:
<?xml version="1.0" encoding="UTF-8"?><wps:Execute version="1.0.0" ...
1
vote
0answers
65 views
Does WCS support tiling and pyramids?
Due to performance reasons, I would like to implement some short of tiling + pyramids in a WCS service.
I am not so familiar with WCS, so I was not able to figure out whether it is something ...
1
vote
1answer
27 views
WFS bbox behavior for longitudes >= 360 degrees
I have a question regarding the OGC WFS specification (2.x and unfinished 3.x).
Let's say I have a WFS feature with longitude 0°.
If I make WFS query with bbox with minx = 359° and maxx = 361°, ...
0
votes
0answers
111 views
How do I search for features within another feature using WFS OGC
I understand I can write a GML query like this...
<wfs:GetFeature xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.opengis.net/wfs http://giswebservices....
0
votes
0answers
138 views
OGC filters not working on WFS service
OGC filters not working on WFS service It only seems to serve up unfiltered data or a layer with a attributes table but no features as if nothing met the criteria. I have tried repeatedly with ...
0
votes
2answers
368 views
Using Open GIS’s KML Schema Definition (ogckml22.xsd), Microsoft.Net XML Schema Definition Tool Fails
In brief, on one hand, I expect Open GIS’s KML Schema Definition, i.e. ogckml22.xsd, to be rock solid; fully debugged. Likewise, Microsoft.Net’s XSD XML Schema Definition tool (https://docs....
1
vote
0answers
52 views
Is there any open source implementation of GeoXACML based access control mechanism for OGC Web Services?
I am looking for an open source implementation of GeoXACML PEP, PDP to provide access control to my OGC web services. I have already set-up SAML based authentication. I found a non-opensource ...
0
votes
1answer
485 views
How to populate a feature table in a GeoPackage file using GDAL?
I want to use the binary version of GDAL to avoid programming in C or Java here. So I have created a SQL file and I want to run it using the following command :
ogrinfo.exe empty.gpkg -sql @...
3
votes
0answers
666 views
Converting XYZ tile coordinate to WMTS
I would like to add a WMTS tile endpoint to Mapbox-GL-JS, which only supports "XYZ" or TMS tiling schemes. According to what I understand of the WMTS specification the two seem to have the same zoom ...
3
votes
1answer
341 views
HTTP Basic Auth Failure: Esri JS API
I am unable to prompt the Basic Authorization popup to appear using the Esri JS API with a Secured OGC WMS service.
A concise description:
Using a basic fetch request, with credentials: "include" ...
0
votes
0answers
197 views
Retrieving all layers of WMS?
I'd like to display data of a WMS (WebMapService) that contains different layers. The URL of the capabilities document is:
http://geoportal.saarland.de/mapbender/php/wms.php?layer_id=41183&...
1
vote
0answers
174 views
Importing WFS Feature in ArcGIS Desktop? [closed]
I am trying to Import an open source WFS Feature in ArcGIS. I have filled all the Options correctly but the Toolbox does not work and I receive error that feature is empty.
How can I correct it?
...
1
vote
1answer
261 views
Can OGC Simple Feature polygon's interior boundaries share an edge?
Is the polygon pictured below compliant with the OGC Simple Feature standard?
There are two interior boundaries that share a segment so intuitively I would say it is not but I have not been able to ...
0
votes
1answer
23 views
OGC: Retrieve all layers with given column name
I have a given column name city and a list of layers from a GetCapabilities on an OGC server request. Is there a way to get all of the layers that have a column called city without sending a request ...
4
votes
0answers
372 views
WMS - understanding <Min> and <MaxScaleDenominator>
I am working on a personal web gis client and the first thing I am implementing is support for OGC WMS 1.3.0.
Right now, I am in the middle of greying out layers in my layer tree which are not ...
1
vote
1answer
72 views
WCS 1.1.1 OGC Complaint Test Failed in Team Engine [closed]
I have been testing my GeoServer 2.12.1 for OGC Compliant to WCS 1.1.1 Standard. But I got following errors while testing with the OGC Team Engine.
How do I resolve the issues?
wcs:...
2
votes
1answer
39 views
What do version numbers in CRS IRIs mean?
By following the links on http://www.opengis.net/def/crs/ one can download identifiers/IRIs for various CRSes minted by the OGC. For many CRSes, there seem to be multiple identifiers, differing in ...
0
votes
1answer
191 views
Is there any method to create WMTS GetCapabilities response in xml using java libraries?
I am creating WMTS server side. The problem is that I cannot find any solution where I will be able to generate GetCapabilities xml response in java using some libraries like geotools or similar. Can ...