Tagged Questions

A geospatial standards organization known as the Open Geospatial Consortium

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10
votes
3answers
341 views

What does it mean “GML is an XML grammar”?

I'm trying to get my head around the theoretical side of XML and GML. The OGC web page for GML states that: The Geography Markup Language (GML) is an XML grammar for expressing geographical ...
1
vote
1answer
485 views

OGC WMS Validation

We're trying to validate our WMS server with OGC standards,to do so OGC has a test page available. Here,only stacked on a single error wms:profiles-basic-1 (View Details): Failed When we look ...
1
vote
0answers
230 views

How to handle multipoint symbology catalogue (as in mil2525c, tactical graphics appendix b)

Is there a general format (standards based) to store a vector based drawing description for multipoint symbology (means having several anchor points reflecting symbol point <-> geographic point ...
3
votes
1answer
233 views

MapServer SOS (Sensor Observation Service) Configuration

I tried to set up MapServer SOS but I faced a problem: the SOS doesn't return anything. You may see the map file I have created below: MAP NAME "SOS_DEMO" STATUS ON SIZE 400 300 ...
4
votes
1answer
1k views

What's up with the GeoJSON spec and CRS as a IRM?

I'm writing a web API to our GIS data, currently revamping our geocoding service. I'm creating the option for folks to specify the output type as GeoJSON so I'm trying to follow the spec. Our data is ...
9
votes
1answer
258 views

Driving Zone Computation using Web Processing Services

I am currently evaluating different OGC Services(WFS,WMS and WPS) for driving zone computation. As I am new to WPS services, I would like some suggestions regarding which OGC services to implement. ...
7
votes
2answers
998 views

Should I use WFS, WMS or SOS considering performance and security?

My task is to develop a web application which will visualize the temporal data on map and produce a kind of data flow (or animation) from the images/data which have been received from server. For ...
1
vote
1answer
263 views

Can I create OGC Services via Geoserver automatically?

I am new to GeoServer and wonder how I can create OGC Services via Geoserver automatically. I have to publish my data (Shapefiles) with a Java program as OGC Services. How can I do that? BTW: I ...
8
votes
1answer
523 views

What options are available for free Web Processing Service (WPS) client?

A number of products seem to be implementing the server side of the OGC Web Processing Service (WPS 1.0.0) and these are listed here. However, for the client side there are fewer options. Has ...
3
votes
2answers
255 views

ArcGIS Desktop - Web Services Definitions

Aside from .LYR files, is there a file format (preferably open) for defining web service endpoints for Arc products? For example, if I publish a WMS feed, can I provide a downloadable resource for ...
3
votes
2answers
3k views

OpenLayers: Combine multiple OGC filters

I have two OGC filters client side: <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"> <ogc:PropertyIsEqualTo matchCase="true"> ...
8
votes
3answers
205 views

are there UML models of the OGC standards available online (native files not pdfs)

Last time I checked, there were only PDFs with class diagrams available on the net (downloadable for at least 140 swiss francs a piece) , but not the UML models in a native format of a database ...
2
votes
1answer
663 views

Convert SqlGeometry data from SQL directly to Tiles / PNG file

I would like to know a basic method for 'exporting' SqlGeometry data from SQL Server 2008 to a Tile Server / PNG File generator. I already have a Silverlight Map application which uses a Custom Tile ...
10
votes
2answers
1k views

How to secure WFS services?

first time posting here.. Im currently tasked with finding a way to deploy wfs services to a number of clients. The services could be consumed by both desktop GIS software eg. MapInfo/ArcGis or by ...
4
votes
1answer
191 views

Geometry Operands - BBOX vs Within - What's the difference?

What is the difference between the "BBOX" and "Within" spatial operators. Can anyone please shed some light?
6
votes
2answers
2k views

OpenLayers filter: OGC (xml) or CQL?

While having not used filtering that much in OpenLayers, we are discussing which type of filtering we should use: The OGC XML filter or the more simple CQL filter? Are one of them more appropriate ...
3
votes
3answers
869 views

Open .NET implementation of the OGC Geometry Object Model from Simple Feature Access 1 specification?

I am looking for a .NET implementation of the geometry object model described in OGS's Simple Feature Access, Part 1 specification. Preferably lightweight. I don't need WKT support, just the ...
6
votes
4answers
2k views

How many WFS-T clients exist?

I would like to know which applications or libraries (proprietary or open source) offer transactional Web Feature Service (WFS-T) client functionality. Those include: Desktop or online applications ...