Connecting R to the Sensor Web
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Daniel Nüst 52°North Initiative for Geospatial Open Source Software GmbH AGILE 2011, Utrecht Connecting R to the Sensor Web
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Interoperable data exchange and reproducibility are increasingly important for modern scientific research. This paper shows how three open source projects work together to realize this: (i) the R project, providing the lingua franca for statistical analysis, (ii) the Open Geospatial Consortium's Sensor Observation Service (SOS), a standardized data warehouse service for storing and retrieving sensor measurements, and (iii) sos4R, a new project that connects the former two. We show how sos4R can bridge the gap be-tween two communities in science: spatial statistical analysis and visuali-zation on one side, and the Sensor Web community on the other. sos4R enables R users to integrate (near real-time) sensor observations directly into R. Finally, we evaluate the functionality of sos4R. The software en-capsulates the service's complexity with typical R function calls in a com-mon analysis workflow, but still gives users full flexibility to handle in-teroperability issues. We conclude that it is able to close the gap between R and the sensor web.
Transcript of Connecting R to the Sensor Web
Daniel Nüst52°North Initiative for Geospatial
Open Source Software GmbH
AGILE 2011, Utrecht
Connecting R to the Sensor Web
AGILE 2011, Utrecht
motivation
AGILE 2011, Utrecht
open data, reproducible research open source
need for SWE analysis clients
spread SOS
power of R
AGILE 2011, Utrecht
AGILE 2011, Utrecht
sensor web
AGILE 2011, Utrecht
AGILE 2011, Utrecht
AGILE 2011, Utrecht
(OGC) web services in R?
AGILE 2011, Utrecht
featuresclient
classes and methods
exchangeability
filtering
Tested SOSs
AGILE 2011, Utrecht
client
AGILE 2011, Utrecht
exchangeabilitymyParseSensorML <- function(obj) {
root <- xmlRoot(obj)return(xmlName(root))
}
mysos = SOS(url = "http://www.sos.de/sos",parsers = SosParsingFunctions(
"DescribeSensor" = myParseSensorML))
AGILE 2011, Utrecht
issues
AGILE 2011, Utrecht
some
examples
AGILE 2011, Utrecht http://www.nordholmen.net/sos4r/agile2011/
> source("http://www.nordholmen.net/sos4r/agile2011/connecting-r-to-the-sensor-web-2011.R")
AGILE 2011, Utrecht http://www.nordholmen.net/sos4r/agile2011/
AGILE 2011, Utrecht
AGILE 2011, Utrecht
AGILE 2011, Utrecht
AGILE 2011, Utrecht
status quo
AGILE 2011, Utrecht
tasks and roadmap
AGILE 2011, Utrecht
contact: [email protected]: www.nordholmen.net/sos4rcommunity: http://52north.org/geostatistics/
thank you!
