How to fix our coverage WCS code

[maelle]

👋 @eblondel! I'm coming with a WCS question this time.

In a package we haven't touched in a while we're now getting test failures because coverage isn't obtained. Here is a reprex of what our code looks like and returns:

service_url <- "https://geoserver.emodnet-physics.eu/geoserver/wcs"

wcs <- ows4R::WCSClient$new(
    service_url,
    serviceVersion = "2.0.1",
    headers = c("User-Agent" = "EMODnetWCS R package https://github.com/EMODnet/EMODnetWCS")
)
#> Loading ISO 19139 XML schemas...
#> Loading ISO 19115-3 XML schemas...
#> Loading ISO 19139 codelists...
capabilities <- wcs$getCapabilities()
capabilities$getCoverageSummaries()
#> list()

^{Created on 2025-02-10 with reprex v2.1.1}

Is this the wrong way to get coverage with the most recent version of ows4R? Thank you in advance for any hindsight.

[maelle]

👋 @eblondel friendly reminder 😸

[eblondel]

Yeah, I was on holidays, far from my laptop.
Quick check:

• when debugging you should enable logger = DEBUG in your WCSClient$new call, it is in general very informative
• first if you look at the response, I see a 301 status Moved permanently, with new location: https://prod-geoserver.emodnet-physics.eu/geoserver/wcs. You should use this. If it is not correct, then liaise with the sys admin to clarify.
• If I browse the capabilities at https://prod-geoserver.emodnet-physics.eu/geoserver/wcs?service=WCS&version=2.0.1&request=GetCapabilities there is no coverage listed. So the empty list you get with capabilities$getCoverageSummaries() is the expected result.
• checking the layer preview page of this geoserver at https://prod-geoserver.emodnet-physics.eu/geoserver/web/wicket/bookmarkable/org.geoserver.web.demo.MapPreviewPage?1&filter=false there is no coverage there only vector layers

[maelle]

Thank you!! I'll work on that soon, thanks for the previous advice.