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Gathering detailed insights and metrics for mapshaper-simplify

Other packages similar to mapshaper-simplify

mapshaper-simplify-full

2.0.2

GeoJson simplify. Extracted from Mapshaper

mapshaper-simplify

Tools for editing Shapefile, GeoJSON, TopoJSON and CSV files

2.0.2

NOASSERTION

JavaScript

14.73 kB

6,867

Installations

npm install mapshaper-simplify

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS

Node Version

14.12.0

NPM Version

7.5.4 Score

60.7

Supply Chain

76.6

Quality

75.5

Maintenance

100

Vulnerability

81.3

License

Pull Requests

Open

0

Total

0

Closed

0

Issues

Open

0

Total

0

Closed

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

View all 1 contributors

Languages

JavaScript

CSS

HTML

TeX

JavaScript (98.95%)

CSS (0.66%)

HTML (0.39%)

Developer

gaomeng1900

Download Statistics

Total Downloads

6,867

Last Day

Last Week

Last Month

292

Last Year

1,053

GitHub Statistics

2,642 Commits

1 Forks

1 Watching

6 Branches

1 Contributors

Bundle Size

40.78 kB

Minified

14.73 kB

Minified + Gzipped

Bundlephobia

Maintainers

Package Meta Information

Latest Version

2.0.2

Package Id

mapshaper-simplify@2.0.2

Unpacked Size

101.13 kB

Size

35.58 kB

File Count

NPM Version

7.5.4

Node Version

14.12.0

Total Downloads

Cumulative downloads

Total Downloads

6,867

Last day

-50%

Compared to previous day

Last week

-50%

Compared to previous week

Last month

356.3%

292

Compared to previous month

Last year

-67.1%

1,053

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Versions

Mapshaper geojson simplify

This is the geojson simplification method extracted directly from Mapshaper

Useage

1import {
2	preBuild, 
3	simplify
4} from 'mapshaper-simplify'
5
6const res = await fetch('./__country.json')
7const geojson = await res.json()
8console.log(geojson)
9
10console.time('preBuild')
11const dataset = preBuild(geojson)
12console.timeEnd('preBuild')
13
14console.log(dataset)
15// console.log(JSON.stringify(dataset))
16
17console.time('simplify')
18const geojson2 = simplify(dataset,  0.1)
19console.timeEnd('simplify')
20console.log(geojson2)
21
22// console.log(JSON.stringify(dataset))
23// console.log(JSON.stringify(geojson2))
24
25console.time('simplify')
26const geojson3 = simplify(dataset,  0.5)
27console.timeEnd('simplify')
28console.log(geojson3)
29
30// console.log(JSON.stringify(dataset))
31// console.log(JSON.stringify(geojson3))

Why Bother?

It is important to keep topological relations among features when processing geographic data, which unfortunately, not promised in most simplification algorithms or GIS softwares like QGIS and ArcGIS.

The simplification process of Mapshaper handles the shared edges well enough in most cases.

However Mapshaper is not designed to be called programmatically on the fly. Nor to be light-weighted. The browser version of it is enormous with dependencies like buffer-es6 as polyfills since it's originaly designed to run in a node.js evirenment.

That's why I extracted the geojson simplification part and minify it as much as posible.

Caution!

The original Mapshaper is not programed friendly for tree-shaking so I have to use some very progressive minification method including JS coverage.

You have to USE IT EXACTLY LIKE OUR EXAMPLES. Or it won't work.

License

This software is licensed under MPL-2.0.

No vulnerabilities found.

No security vulnerabilities found.

Other packages similar to mapshaper-simplify

mapshaper-simplify

Installations

Developer Guide

Yes

CommonJS

14.12.0

7.5.4

Score

Pull Requests

0

0

0

Issues

0

0

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

Languages

Developer

Download Statistics

GitHub Statistics

Bundle Size

40.78 kB

14.73 kB

Maintainers

Package Meta Information

Total Downloads

6,867

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

Mapshaper geojson simplify

Useage

Why Bother?

Caution!

License