[
    {
        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/provenance",
        "@graph": [
            {
                "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/assertion",
                "http://www.w3.org/ns/prov#wasAttributedTo": [
                    {
                        "@id": "https://orcid.org/0000-0002-1784-2920"
                    }
                ]
            }
        ]
    },
    {
        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/pubinfo",
        "@graph": [
            {
                "@id": "https://orcid.org/0000-0002-1784-2920",
                "http://xmlns.com/foaf/0.1/name": [
                    {
                        "@value": "Anne Fouilloux"
                    }
                ]
            },
            {
                "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw",
                "http://purl.org/dc/terms/created": [
                    {
                        "@value": "2026-05-02T09:57:11.763Z",
                        "@type": "http://www.w3.org/2001/XMLSchema#dateTime"
                    }
                ],
                "http://purl.org/dc/terms/creator": [
                    {
                        "@id": "https://orcid.org/0000-0002-1784-2920"
                    }
                ],
                "http://purl.org/dc/terms/license": [
                    {
                        "@id": "https://creativecommons.org/licenses/by/4.0/"
                    }
                ],
                "http://purl.org/nanopub/x/introduces": [
                    {
                        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/healpix-ellipsoid-vs-sphere"
                    }
                ],
                "http://purl.org/nanopub/x/wasCreatedAt": [
                    {
                        "@id": "https://platform.sciencelive4all.org"
                    }
                ],
                "http://www.w3.org/2000/01/rdf-schema#label": [
                    {
                        "@value": "NP created using Defining a PICO-based research question"
                    }
                ],
                "https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate": [
                    {
                        "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w"
                    }
                ]
            },
            {
                "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/sig",
                "http://purl.org/nanopub/x/hasAlgorithm": [
                    {
                        "@value": "RSA"
                    }
                ],
                "http://purl.org/nanopub/x/hasPublicKey": [
                    {
                        "@value": "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"
                    }
                ],
                "http://purl.org/nanopub/x/hasSignature": [
                    {
                        "@value": "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"
                    }
                ],
                "http://purl.org/nanopub/x/hasSignatureTarget": [
                    {
                        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw"
                    }
                ],
                "http://purl.org/nanopub/x/signedBy": [
                    {
                        "@id": "https://orcid.org/0000-0002-1784-2920"
                    }
                ]
            }
        ]
    },
    {
        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/assertion",
        "@graph": [
            {
                "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/comparatorGroup",
                "http://purl.org/dc/terms/description": [
                    {
                        "@value": "HEALPix Discrete Global Grid System defined on the unit sphere (Górski et al. 2005), as implemented in the canonical healpy library, applied to WGS84-referenced data without ellipsoidal correction. "
                    }
                ]
            },
            {
                "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/interventionGroup",
                "http://purl.org/dc/terms/description": [
                    {
                        "@value": "HEALPix Discrete Global Grid System defined directly on the WGS84 ellipsoid, with cell boundaries, neighbour relations, and coordinate transformations computed under ellipsoidal geometry (as implemented in the healpix-geo Python package)."
                    }
                ]
            },
            {
                "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/outcomeGroup",
                "http://purl.org/dc/terms/description": [
                    {
                        "@value": "Cell-area uniformity across the grid; correctness of nearest-neighbour adjacency relations on Earth's actual surface; round-trip accuracy of pixel-to-geographic-coordinate mapping for WGS84-referenced data; preservation of hierarchical  refinement (nside doubling) under ellipsoidal geometry."
                    }
                ]
            },
            {
                "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/population",
                "http://purl.org/dc/terms/description": [
                    {
                        "@value": "Geospatial data referenced to the WGS84 ellipsoid: Earth-observation imagery, oceanographic and atmospheric fields, biodiversity occurrence records, and any data product whose coordinates are given as geographic latitude/longitude on the WGS84 datum.  "
                    }
                ]
            },
            {
                "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/healpix-ellipsoid-vs-sphere",
                "http://data.cochrane.org/ontologies/pico/comparatorGroup": [
                    {
                        "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/comparatorGroup"
                    }
                ],
                "http://data.cochrane.org/ontologies/pico/interventionGroup": [
                    {
                        "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/interventionGroup"
                    }
                ],
                "http://data.cochrane.org/ontologies/pico/outcomeGroup": [
                    {
                        "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/outcomeGroup"
                    }
                ],
                "http://data.cochrane.org/ontologies/pico/population": [
                    {
                        "@id": "https://w3id.org/np/RA5e5XeXy_-aNK5giB7kBAEQslTLVydHeM4YYEzhmEE2w/population"
                    }
                ],
                "http://purl.org/dc/terms/description": [
                    {
                        "@value": "For geospatial data referenced to the WGS84 ellipsoid, does Hierarchical Equal Area isoLatitude Pixelization (HEALPix) defined directly on the WGS84 ellipsoid yield more accurate cell-area uniformity, neighbour adjacency, and pixel-to-geographic-coordinate mapping than HEALPix defined on the unit sphere (the original Górski et al. 2005 formulation), when applied to Earth-observation, oceanographic, atmospheric, and biodiversity data products?  "
                    }
                ],
                "@type": [
                    "http://data.cochrane.org/ontologies/pico/PICO",
                    "https://w3id.org/sciencelive/o/terms/EffectivenessResearchQuestions"
                ],
                "http://www.w3.org/2000/01/rdf-schema#label": [
                    {
                        "@value": "HEALPix on the WGS84 ellipsoid versus HEALPix on the unit sphere for geoscience data"
                    }
                ]
            }
        ]
    },
    {
        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/Head",
        "@graph": [
            {
                "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw",
                "http://www.nanopub.org/nschema#hasAssertion": [
                    {
                        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/assertion"
                    }
                ],
                "http://www.nanopub.org/nschema#hasProvenance": [
                    {
                        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/provenance"
                    }
                ],
                "http://www.nanopub.org/nschema#hasPublicationInfo": [
                    {
                        "@id": "https://w3id.org/sciencelive/np/RAQXNGyT0FoC3ok_CJQcKpOIwnCbL1pZqDn-cYmtMrHKw/pubinfo"
                    }
                ],
                "@type": [
                    "http://www.nanopub.org/nschema#Nanopublication"
                ]
            }
        ]
    }
]