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[{"key": "dc.contributor.advisor", "value": "M\u00e4kinen, Raino", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kuntsi, Satu", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-06-05T11:11:40Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-06-05T11:11:40Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/87432", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Useimmissa verkkokarttasovelluksissa karttatasot ladataan k\u00e4ytt\u00f6liittym\u00e4lle PNG-kuvaformaatissa olevina rasteritiilin\u00e4. T\u00e4ll\u00f6in kuvatiedostot prosessoidaan palvelimella ja selaimessa ajettava asiakassovellus render\u00f6i ne kartalle sellaisenaan. Vaihtoehtoisesti paikkatietokohteet voidaan tuoda k\u00e4ytt\u00f6liittym\u00e4lle vektoritiilin\u00e4, jolloin n\u00e4kym\u00e4n prosessointi on enemm\u00e4n asiakassovelluksen vastuulla. T\u00e4m\u00e4 asettaa rasteriformaatin k\u00e4ytt\u00f6\u00e4 enemm\u00e4n vaatimuksia esimerkiksi kartan selaamiseen k\u00e4ytett\u00e4v\u00e4lle laitteelle, verkkoyhteyden kaistanleveydelle sek\u00e4 karttaohjelmiston toteutukseen k\u00e4ytetyille tekniikoille.\n\nT\u00e4ss\u00e4 kokeellisessa tapaustutkimuksessa suoritettiin suorituskykytestaus kahdelle rasteri- ja kahdelle vektoritiilitoteutukselle. Vektoritiilitoteutuksista toinen oli GeoJSON- ja toinen Mapbox Vector Tile- eli MVT-formaatissa. Testauksen aikana mitattiin k\u00e4yt\u00f6n aikana ladatun datan m\u00e4\u00e4r\u00e4\u00e4, karttan\u00e4kymien ja yksitt\u00e4isten tiilien latautumisnopeutta sek\u00e4 tiilien generoimiseen kulunutta aikaa. Testaus suoritettiin kahdella eri tiedonsiirtonopeudella.\n\nTulosten perusteella rasteritiilet latautuivat vektoritiili\u00e4 nopeammin molemmilla tiedonsiirtonopeuksilla. K\u00e4ytetyll\u00e4 dataformaatilla puolestaan oli suuri vaikutus vektoritiilien suoriutumiseen. GeoJSON-formaatissa olevat tiilet olivat kooltaan suurimpia ja hitaimpia ladata. MVT-formaatissa olevat tiilet olivat kooltaan keskim\u00e4\u00e4rin pienimpi\u00e4, mink\u00e4 lis\u00e4ksi ne generoituivat nopeiten. MVT-formaatissa olevien tiilien kokojakauma oli kuitenkin rasteri-tiili\u00e4 suurempi, mink\u00e4 lis\u00e4ksi MVT-formaatissa olevat tiilet olivat hitaampia render\u00f6id\u00e4 kartalle.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Most Web maps are rendered using raster tiles in PNG image format. Images are processed on the server side and only displayed by the client. Alternatively servers can publish feature data as vector tiles and let clients take care of data visualization. Client side processing places more demands on bandwidth and performance of devices used to browse maps, as well as on techniques used to implement Web map applications.\n\nIn this experimental case study a performance test was conducted on two implementations utilizing raster tiles and two utilizing vector tiles. One of the vector tile implementations published tiles in GeoJSON and the other in Mapbox Vector Tile (MVT) format. Amount of loaded data, loading time and tile generation time were measured during testing. Testing was conducted with two different Internet connection speeds.\n\nAccording to the results, raster tiles were faster to load than vector tiles on both Internet connections, and used data format had big impact on vector tile performance. Tiles in GeoJSON format we larger and slower to load than tiles in all other tested implementations. On the other hand, vector tiles in MVT format were smaller on average than tiles in raster format. They were also fastest to generate. However, size range of vector tiles in MVT for-mat was larger when compared to raster tiles. They were also slower to render on map.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2023-06-05T11:11:40Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-06-05T11:11:40Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "127", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "OpenLayers", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "GeoServer", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "suorituskykytestaus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kokeellinen tutkimus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "tapaustutkimus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "verkkokartta", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "vektoritiili", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "rasteritiili", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "WMS", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "WMTS", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "GeoJSON", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Mapbox Vector Tile", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "MVT", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Rasteri- ja vektorikarttatasojen suorituskykyvertailu verkkokarttasovelluksessa", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202306053493", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Informaatioteknologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Information Technology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Informaatioteknologia", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Information Technology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tietotekniikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Mathematical Information Technology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "restrictedAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "602", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/collections/archival-workstation).", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/kokoelmat/arkistotyoasema..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}]
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