GeoJSON Text Sequences

Gillies, Sean

doi:10.17487/rfc8142

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…For the GeoJSON format [Butler et al, 2016], which follows the Simple Feature paradigm, creating a stream is trivial since each of the features in the dataset becomes one JSON object serialised to one line [Gillies, 2017]. There are no links possible between features, each JSON object is independent.…”

Section: + +mentioning

confidence: 99%

“…We present in this paper CityJSON Text Sequences (henceforth referred to as CityJSON-Seq), a format based on JSON Text Sequences [Williams, 2015] and CityJSON, and inspired by GeoJSON Text Sequences [Gillies, 2017]. CityJSONSeq was added to the CityJ-SON version 2.0 standard that was released in 2023 (and also standardised by the OGC, see OGC [2023b]).…”

Section: Introductionmentioning

confidence: 99%

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CityJSON: a compact and easy-to-use encoding of the CityGML data model

Ledoux

Ohori

Kumar

et al. 2019

Open geospatial data, softw. stand.

126

101

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Full details of the project: https://cityjson.orgThe international standard CityGML is both a data model and an exchange format to store digital 3D models of cities. While the data model is used by several cities, companies, and governments, in this paper we argue that its XML-based exchange format has several drawbacks. These drawbacks mean that it is difficult for developers to implement parsers for CityGML, and that practitioners have, as a consequence, to convert their data to other formats if they want to exchange them with others. We present CityJSON, a new JSON-based exchange format for the CityGML data model (version 2.0.0). CityJSON was designed with programmers in mind, so that software and APIs supporting it can be quickly built. It was also designed to be compact (a compression factor of around six with real-world datasets), and to be friendly for web and mobile development. We argue that it is considerably easier to use than the CityGML format, both for reading and for creating datasets. We discuss in this paper the main features of CityJSON, briefly present the different software packages to parse/view/edit/create files (including one to automatically convert between the JSON and GML encodings), analyse how real-world datasets compare to those of CityGML, and we also introduce Extensions, which allow us to extend the core data model in a documented manner.

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Section: + +mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CityJSON: a compact and easy-to-use encoding of the CityGML data model

Ledoux

Ohori

Kumar

et al. 2019

Open geospatial data, softw. stand.

126

101

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“…Considering the size of global basemap data which is currently in the order of 100GB, we thought it was critical to reduce the footprint of the data and also divide the tasks to easily manageable parallel modules. In this view, we decided to use GeoJSON Text Sequences (Gillies, 2017) for processing geospatial data and interfacing between software components for vector tile production. We also decided to divide the globe into z=6 modules so that each vector tile package takes up to several gigabytes.…”

Section: Stream-oriented Module-based Productionmentioning

confidence: 99%

Design and Development of the Un Vector Tile Toolkit

Fujimura

Sanchez²,

Ferreiro³

et al. 2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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<p><strong>Abstract.</strong> The UN Vector Tile Toolkit (https://github.com/un-vector-tile-toolkit/) is a package of open source tools designed under the UN Open GIS Initiative to enable public basemap providers, such as the UN geospatial information services or mapping organizations of governments, among others, to deliver their basemap vector tiles leveraging the latest web map technologies. The toolkit provides a set of Node.js open source scripts designed for developers to use with existing and proven open-source software such as Tippecanoe, Maputnik and Vector Tile optimizer. The toolkit will help organizations to produce, host, style, and optimize fast and interoperable basemap vector tiles, making them available with various application frameworks. The talk will cover automatic and continuous updates of basemap vector tiles using a continuously updated PostGIS database which stores both the UN mission-specific basemap data and global OpenStreetMap data. The talk also focuses on how the project ensured interoperability with different existing enterprise geospatial software frameworks that use less-advanced web map libraries. The project aims to build a sustainable community of developers that support the provision of fast and interoperable basemap vector tiles.</p>

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GeoJSON Text Sequences

Cited by 2 publications

References 4 publications

CityJSON: a compact and easy-to-use encoding of the CityGML data model

CityJSON: a compact and easy-to-use encoding of the CityGML data model

Design and Development of the Un Vector Tile Toolkit

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