DOWNLOAD TOPOJSON.JS

Otherwise, download the latest release. Join us on Oct. See How to Infer Topology for details on how the topology is constructed. Installing If you use NPM, npm install topojson-server. Any properties and identifiers of input feature objects are propagated to the output.

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Quantization is recommended to improve the quality of the topology if the input geometry is messy i. Join us on Oct.

This is similar to rounding coordinate values e. Use topojson-client, topojson-server or topojson-simplify directly.

For example, to convert the states. A single TopoJSON file can contain multiple feature collections without duplication, such as states and counties. Installing If you use NPM, npm install topojson. Otherwise, download topojsoh.js latest release. It allows topology-preserving shape simplificationwhich ensures that adjacent features remain connected after simplification; this applies even across feature collections, such as simultaneous consistent simplification of state and county boundaries.

TopoJSON eliminates redundancy, allowing related geometries to be stored efficiently in the same file. For convenience, you can omit the object name and specify only the output file name; the object name will then be the basename of the file, with the directory and extension removed.

In vanilla, a topojson global is exported: Test with RunKit Report a vulnerability.

You can also load directly from d3js. The returned topology makes a shallow copy of the input objects: Specify a pre-quantization paramter. Share private packages across your team with npm Orgs, now with simplified billing via the aws marketplace! Toposjon.js vanilla, a topojson global is exported:. Otherwise, download the latest release.

d3 + TopoJSON

You can also load directly from unpkg. Test with RunKit Report a vulnerability.

Any properties and identifiers of input feature objects are propagated to the output. Installing If you use NPM, npm install topojson-server. Topology can also be used for Dorling or hexagonal cartogramsas well as other techniques that need shared boundary information such as automatic map coloring. For example, the shared boundary between California and Nevada is represented only once, rather than being duplicated for both states.

If you use NPM, npm install topojson. In vanilla, a topojson global is exported:. Try topojson-server in your browser. Or, a TopoJSON file can efficiently represent both polygons for fill and boundaries for stroke as two feature collections that share the same arc mesh. Accept newline-delimited JSONwith one feature per line.

This package has been deprecated Author message: Does your artifact manager get in the way?

topojson - - The best FOSS CDN for web related libraries to speed up your websites!

In vanilla, a topojson global is exported: If you want to transform or filter properties, try ndjson-cli as demonstrated in Command-Line Cartography.

If a quantization parameter is specified, the input geometry is quantized prior to computing the topology, the returned topology is quantized, and its arcs are delta-encoded. See How to Infer Topology for details on how topojson.hs topology is constructed. Yet encoding topology also has numerous useful applications for maps and visualization above!