| Feature | Status |
|---|---|
| Works through Apache. | Done |
| Uses HTTP GET from an endpoint. | Done |
If /proc/loadavg > 5 then return 503 Service Unavailable. |
Not Done |
| HTTP cache headers are based on the latest date of the data sources. | Not Done |
| Source | Currently Included |
|---|---|
| SRTM | Yes |
| Nova Scotia DEM | No |
| NYC DEM | No |
| Canadian Elevation Data API | No |
| Name | Description | Example | Status |
|---|---|---|---|
| bbox | minlong,minlat,maxlong,maxlat| bbox=4.06,50.86,5.13,51.33 |
Done | |
| format | rdf/xml|n3|ntriples|xyz|png | format=rdf/xml |
Done | |
| scale | Distance between points in metres. | scale=90 |
Done |
Note: format arguments are either format=rdf/xml|n3|xyz|png or controlled through an HTTP Accept header. Any error on this parameter is reported as 406 Not Acceptable.
RDF Provenance information has to be created for each data source.
Status: Not Done
Example:
<prov:Collection rdf:resource="http://localhost/answer/xx">
<rdf:type rdf:resource="void:Dataset"/>
<prov:wasGeneratedBy>
<prov:SoftwareAgent rdf:about="http://localhost/api/xx" >
<prov:wasGeneratedBy rdf:about="http://localhost/api/about" />
<rdfs:label xml:lang="en">Elevation Server API process ID xxxxx</rdfs:label>
<prov:startedAtTime>2014-07-14T01:01:01Z</prov:startedAtTime>
<prov:endedAtTime>2014-07-14T01:01:03Z</prov:endedAtTime>
<prov:wasInformedBy rdf:resource="http://localhost/api/datasets/A"/>
<prov:wasInformedBy rdf:resource="http://localhost/api/datasets/B"/>
<prov:wasInformedBy rdf:resource="http://localhost/api/datasets/C"/>
</prov:SoftwareAgent>
</prov:wasGeneratedBy>
<prov:hadMember>
<!-- This point extracted from another dataset. -->
<geo:Point rdf:resource="http://localhost/answer/point/xx">
<geo:long>....</geo:long>
<geo:lat>....</geo:lat>
<prov:wasInformedBy rdf:resource="http://localhost/api/datasets/A"/>
</geo:Point>
</prov:hadMember>
<prov:hadMember>
<!-- This point extracted inferred by an algorithm and another dataset. -->
<geo:Point rdf:resource="http://localhost/answer/point/xx">
<geo:long>....</geo:long>
<geo:lat>....</geo:lat>
<prov:wasGeneratedBy rdf:resource="http://localhost/api/xx"/>
<prov:wasInformedBy rdf:resource="http://localhost/api/datasets/B"/>
</geo:Point>
</prov:hadMember>
...
</prov:Collection>Permanent metadata hangs off the endpoint as a static document at http://.../endpoint/about.
Status: Not done
Example:
<prov:Activity rdf:about="http://localhost/api/about">
<rdfs:label xml:lang="en">Elevation Server API Process</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/ns/prov#Activity"/>
<rdf:type rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#Process"/>
<prov:wasAssociatedWith rdf:resource="http://rdf.muninn-project.org/ww1/2011/11/11/Organization/Muninn"/>
<foaf:name xml:lang="en">Elevation Server API Process</foaf:name>
<doap:Version>2.0</doap:Version>
<rdf:type rdf:resource="http://www.w3.org/ns/prov#SoftwareAgent"/>
<rdf:type rdf:resource="http://usefulinc.com/ns/doap#Project"/>
<doap:service-endpoint rdf:resource="http://localhost/api"/>
<doap:developer rdf:resource="http://localhost/markfarrell"/>
<doap:homepage rdf:resource="http://localhost/"/>
<doap:blog rdf:resource="http://blog.muninn-project.org/"/>
<doap:description xml:lang="en">The Elevation Server API will ...</doap:description>
<cc:attributionName xml:lang="en">The Muninn Project</cc:attributionName>
<cc:attributionURL rdf:resource="http://www.muninn-project.org/"/>
</prov:Activity>