Questions tagged [ogc]

A geospatial standards organization known as the Open Geospatial Consortium

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1answer
109 views

Implementing spatial tables in a database

Is there a OGC specification on how to implement spatial data storage in a database? I was looking at the tinydb for spatial data storage, but I was wondering what is a standard way to store spatial ...
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1answer
567 views

Using CQL for a poor man's temporal filter on a server offering only WFS 1.1.0

There's a WFS I'm accessing via script to pull in features that will match a particular day. The attribute I care about in the output is DATE_TIME. However because it's WFS 1.1.0 it does not support ...
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0answers
554 views

Unable to access https enabled OGC WMS service in Portal for ArcGIS 10.4.1

OGC WMS service is published on WebLogic 10.3 (https enabled). We are able to access OGC WMS service deployed in web logic server through browser and secured connection was established successfully. ...
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1answer
315 views

Validity standard for GeoJSON polygons?

There are two different ways the polygon below can be represented: In ESRI-land, the polygon would be modeled as a single exterior ring that loops back on itself. In the OGC world, it would be ...
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91 views

Geometry collections: sets or multisets?

In OGC, are collections of geometries equivalent to sets, or to multisets? For example, is ((1.1, 1.1), (2.2, 2.2)) equivalent to or different from ((1.1, 1.1), (1.1, 1.1), (2.2, 2.2))?
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1answer
127 views

Is there a common standard for how GIS information is displayed?

New to GIS programming so this might be a silly question. Is there a standard way to store/transmit how a GIS feature is to be displayed? So I can see there's loads of standard ways of storing tha ...
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1answer
57 views

Database standards for storing and analysing raster

Vector data stored in a database is covered by OGC's Simple Features and WKT. Databases indeed implement these standards. Some databases such as Oracle, PostGIS extend their support to rasters. Is ...
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0answers
38 views

Is it possible to create an ACL (Acces Control List) for OGC SOS (Sensor Observation Service) protocols

What alternatives exist to create an ACL (Acces Control List) for OGC SOS (Sensor Observation Service) protocol? My goal is enable only some resource (Sensors, procedures or offerings) at some users. ...
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172 views

How to optimize the WFS service's CQL and ECQL?

I am using wfs cql filters to get the attribute data but when the cql filter selects a large dataset say 1000+ point data the response time is large. How can I optimize cql filter ? The following ...
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1answer
95 views

Geonetwork catalog dataset statistics

I want to get some statistics about my geonetwork catalog. Things I would like to know are total dataset count dataset count for different format types (e.g. CSV, WMS, etc.) dataset count that is ...
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1answer
2k views

OpenLayers 3: Geometric OGC filters

How do I generate geometric OGC filters for use in a WFS GetFeature request such as: <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"> <ogc:Intersects> <ogc:PropertyName&...
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153 views

Dynamic Symbolizers w/ CQL not URL encoded

I am trying user Dynamic Symbolizers in my SLD: <?xml version="1.0" encoding="UTF-8"?> <StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc" xmlns:...
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1answer
498 views

Using dynamic property value in OnlineResource href against MongoDB store?

I am passing this SLD to geoserver: <?xml version="1.0" encoding="UTF-8"?> <StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc" xmlns:xlink="http:/...
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31 views

Looking for Web service standard to disseminate water level data

I’m about to lead a project that has to disseminate observed, forecasted and predicted water level data coming from tide gauges. I did a lot of research to identify which dissemination standards to ...
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1answer
708 views

Adding Single OGC WMS Layer in ArcGIS

Is it possible to add just a single layer from WMS service to a map in ArcGIS (Desktop/Portal)? As an example, I am looking at the Maritime Boundaries WMS Service from: Flanders Marine Institute (VLIZ)...
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1answer
80 views

Server (MapServer) does not support the gml coverage

I'm testing WCS (2.0.1) through OGC compliance test and some of the test cases are getting failed with an error: The server does not support the gml coverage. Test case id : cs2:get-kvp-core-req12 ...
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1answer
2k views

REST API for OGC standards

I can access WMS and WFS using SOAP and XML. Is there an option to access it using REST and JSON? I have gone through the specification and couldn't even find the word REST mentioned once.
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2answers
2k views

Is GeoJSON an OGC format

I am using geometries in a JavaScript page and it is best to use JSON objects rather than GML which is XML based. I heard of GeoJSON, but is it an OGC open format?
2
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1answer
778 views

Number of zoom levels in WMS?

I want to calculate the numbers of zoom levels that has a WMS. I had a look to the WMS spec and I guess that it has to be related with bounding box area and image size.
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2answers
100 views

What is the CAD equivalent of OGC?

The GIS industry has the OGC. What standards does CAD software have?
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1answer
1k views

When validating geometries, what are “Nested shells”?

I am validating shapefiles polygon geometry using shapely, and have also attempted it using FME. Some polygons return the error "Nested Shells". I cannot find a definition of what the problem is, ...
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2answers
340 views

Semantics of polygon points - How to join the dots?

The question arise from reading the standard "OGC® Sensor Planning Service Interface Standard 2.0 Earth Observation Satellite Tasking Extension", that you can get from http://www.opengeospatial.org/...
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1answer
58 views

Learning how to use WFS Filter?

I need to learn about the WFS Filter. is their any website or book where we can learn about WFS and its filter by example. i have seen the OGC website where we have only xsd.
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3answers
571 views

GeoServer 2.5 style SLD import from QGIS issue

I have created an SLD file from a layer in QGIS that I am trying to import into GeoServer 2.5 but am having some problems with an issue. The error I am getting back is: Parsing failed for Filter: ...
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3answers
1k views

Mbtile To Geopackage and Vice versa

The geopackage open format offered by OGC for vector data (like that of shapefiles) supports map tiles (raster tiles) as well. The functionality is similar to mbtile format founded by mapbox. Is there ...
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1answer
2k views

Using filter encoding in WFS query on MapServer?

I need to query this WFS public service http://wms.pcn.minambiente.it/ogc?map=/ms_ogc/wfs/Numeri_Civici_2012.map&service=WFS&request=GetCapabilities The layer I need to query is this one ...
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0answers
471 views

How to get elevation of a coordinate given a dtm file out of a PostGIS?

What would be the best way to get elevation of a coordinate out of a PostGIS database (SQL/plpgsql) given a GeoTIFF dtm file? Importing as PostGIS Raster (which seems more costly) and calling ...
2
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1answer
675 views

Is there anything like OGC Property IN list Filter?

I am converting some CQL filters to OGC, and I'm wondering whether there is something like a propery in list filter in OGC, or the only solution is to combine the PropertyIsEqualTo with an OR filter....
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1answer
817 views

How to pre-render map tiles

I'm looking for a mechanism/mechanisms where by I can pre-render my own map tiles and then server them up to the client through OGC WMTS service. There are numerous ways I have searched on the web ...
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2answers
637 views

Is there an open standard for raster information?

For geographic vector data (Features) there is an OGC standard that defines geometries and their different annotations such as WKT and WKB. For raster image data however, I was not able to find ...
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4answers
4k views

How are ESRI WKT projections different from OGC WKT projections?

Does anyone know the precise list of differences between ESRI WKT and OGC WKT projection format strings? I know there are various tools to help convert from ESRI WKT to OGC WKT, including GDAL ...
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0answers
65 views

Get a geometry point along a line from another point with distance using OGC SFSQL

I am wondering is that any quick OGC SFSQL function (or any other spatial query) which return a geometry point that: The point is x distance along a line from its A-End ? ps: I am using postgis 2.x
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3answers
882 views

What's the difference between coordinateDimension and spatialDimension?

The OpenGIS standard mentions three methods to query the dimensions of a Geometry: dimension(): the inherent dimension of the geometry: 0 for Point 1 for Curve 2 for Surface coordinateDimension(): ...
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0answers
79 views

C++ parser for OGC Filter Encoding 1.0

I'm developing a C++ application and I have to parse a OGC Filter in order to implement querying functionality on a metadata repository. Does anyone know any C++ library to parse OGC Filters? Thanks.
3
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1answer
377 views

INSPIRE, GEOSS and OGC [closed]

(as simply as you can) what are the differences between INSPIRE, GEOSS and OGC? I will explain what I understood: The OGC provides standards for web-mapping that like WMS, WFS (are these standards ...
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0answers
349 views

Servers that implement OGC Geo/Time OpenSearch [closed]

The OGC is has published the "OpenSearch Geo and Time Extensions". That specification is based on, but extends, the OpenSearch Geo extension and OpenSearch Time extension. As it turns out, I'm ...
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2answers
3k views

Is there free WFS 2.0 client?

I have the task to provide my point observations data in the "WFS 2.0" (Web Feature Service 2.0) standard format. Are there any free, easy-to-use, desktop GIS clients or online viewers for showing ...
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2answers
979 views

Centralizing QGIS connections for multiple QGIS installations?

I have multiple computers with QGIS installed on them. I regularly use the same WMS / WFS services. Now I have to connect to these services for each QGIS installation separately. It would be great ...
6
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1answer
211 views

What is the OGC way of representing Related features?

I have a point shapefile of Persons (The point is located at the registered address of the person) and a polygon shapefile of parcels. There is an owner_id attribute in the parcels shapefile, which ...
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1answer
1k views

ogc:filter how to filter a number?

The below sld passing attribute5 having 3.09 or 5.56. But not 1690.98 or 10923.34 which is just opposite of what we need. How to parse the string attribute5 data as number here.. <ogc:Filter&...
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1answer
457 views

Is there public OGC Catalog Service (CSW) available which lets ArcGIS for Desktop with CSW Client Add (WMS) To Map?

This is a follow on from a Question that I asked last year entitled Is there a public OGC Catalog Service (CSW) available?. That Question has an Accept-ed Answer but I would now like to expand upon ...
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1answer
2k views

Geoserver: WFS/WMS query by month on Date datatype

I have a GeoServer running, using a Postgis database as storage for a workspace with a few different layers. These layers are accessible through WMS or WFS. One of the variables in this database is ...
2
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1answer
118 views

ArcGIS layer format

Am I correct in saying that the ArcGIS layer format for styling maps (*.lyr) is not an OGC approved format? And this is the reason that QGIS cannot read the *.lyr files?
2
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1answer
357 views

postGIS (?) - ST_Difference preserving attributes

EDITED QUESTION: PROPER SYNTAX FOR ST_DIFFERENCE BETWEEN TABLES? I have two huge polygon datasets from shapefiles, call them 'baselevel' coverage and 'deluxe' coverage. They each contain over 2.4 ...
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1answer
4k views

Are these two OGC WKT projections the same? And if so, why are their reference strings different?

So here is the .prj text of a federal shapefile dataset of all public airports in its native OGC WKT format: GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],...
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1answer
194 views

OpenStreetMap is more technical than many people think [closed]

I have been asked to write an article on the above topic. I am writing on Quasi topological data format Incompatibility with OGC standards (WMS vs mapnik, WFS vs overpass, SLD vs mapcss) Closed ...
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1answer
229 views

Making my GIS application OGC compliant

We have a stack of open source software's which we use to build a GIS. We would like to align our application to OGC as much as possible. I visited the site and read about the standards. Now my ...
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2answers
244 views

SQL: Select aggregated Bounding Box of multiple Features

I would like to calculate the aggregated bounding box of multiple features using OGC Simple Feature SQL or SQL API of ArcSDE. The following statement will only query the bounding box of each feature: ...
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0answers
1k views

OGC filter intersects polygon

I am trying to get a selection of points in my dataset, by selecting a polygon and returning all points inside it. I am using an OGC fiter, and currently I am testing it directly in the OpenLayers ...
6
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3answers
5k views

Making OGC WMS/WFS look like ArcGIS Server layer, including functionality?

Esri contacted me about this question. After a good talk the conclusion was that it is not wise to build a wrapper around WMS/WFS because of possible changes to the REST interface of ArcGIS Online ...