This is the last blog post I will be making for the Seismic SOS project!. If anyone has been keeping up with or has read my weekly reports page you will see that it has been a huge learning process for me, and I just want to say that I am very grateful to have been given this opportunity by 52°North, GSOC 2013, and the open source community.more >
52°North software on OSGeo Live 7.0
OSGeo-Live 7.0 has been released! For this release, geospatial applications have been updated to their latest stable release. OSGeo-Live is a self-contained bootable DVD, USB flash drive and Virtual Machine based upon Ubuntu Linux (version 12.04 LTS). OSGeo-Live is pre-configured with a wide variety of robust open source geospatial software. All applications can be trialled without installing anything on your computer, simply by booting the computer from a DVD or USB drive, or running in a Virtual Machine environment. Each featured package is accompanied by both a publication quality one page descriptive summary and a short tutorial on how to get started using it. more >
Spatial Filtering and Time-dependent Sensor Descriptions for SOS
We are pleased to announce that the 52 ° North SOS 4.0.0 implementation supports two new features: the SOS 2.0 Spatial Filtering Profile and the support for the optional validTime parameter in DescribeSensor requests. Both features will facilitate the modelling, storage and retrieval of mobile sensor data from SOS.
Spatial Filtering Profile
The Spatial Filtering Profile is specified in clause 12 of the SOS 2.0 specification (OGC 12-006). This profile restricts observations to spatial observations which provide a well-defined parameter for the observation location. This parameter carries the sampling geometry of the observation which represents the spatial extent where the observation result applies to and can be targeted by spatial filters. The “Spatial Observation” is defined in the Observation & Measurement 2.0 specification (OGC 10-025) subclause 7.13 and can contain any gml:AbstractGeometry type, such as points, lines or polygons.
Seismic Observations in SOS, Midterm Report
This is the midterm update for my GSOC project to integrate seismic data support in SOS. My progress was relatively slow at the start due to a learning curve related to the SOS code base. I have made a lot of progress recently. My main goal for the midterm milestone was to have the SOS set up as a proxy data source querier that could take requests from the server and return seismic data, in time series and/or event format. I wanted to be able to create my own instance of SOS where it was possible to use operations such as GetCapabilities, DescribeSensor, and GetObservation to pull data and simulate what a user might ask for in the SWE client. For details on this architecture, please refer to the SOS Wikipedia page.more >
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