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@codustry/geojson-toolkit

v0.2.6

Published

an interactive cli/library toolkit to interact with geojson via cli, primary for optimization, mapbox-prefer format

Downloads

19

Readme

geojson-toolkit[alpha]

an interactive cli/library toolkit to interact with geojson via cli, primary for optimization, mapbox-prefer format

cover

rationale

  • reduce size 50% by removing precision from 15 to 6 in some polygon geojson.
  • remove/split properties that are not used.
  • add index property to each feature for mapbox-prefer format. reduce frontend processing time.

MVP concept

given a geojson file, the toolkit will create a set of geojson combined a set of operations.

given input.geojson

| operation | description | file_example_name | | ----------------------------------------- | ----------------------------------- | ----------------------------------------------------- | | reduce precision | reduce the precision of coordinates | input.p6e2.geojson | | split properties | split properties that are not used. | input.p6e2.geojson, input.p6e2.properties.geojson | | add index | add index property to each feature | input.p6e2.geojson |

Usage

npm i -g @codustry/geojson-toolkit

geojson-toolkit [options] <geojson>

# example
geojson-toolkit input.geojson

# remove all existings
fd 'p\de\d' -x rm

# apply to all geojson files in a directory
fd -e geojson -x geojson-toolkit 

# compress all geojson files in a directory
fd . -t file  -x gzip -9 -k 

Arguments

  • geojson: GeoJSON input file.

Options

| Option | Description | Default Value | | --------------------------- | --------------------------------------------------------------------------- | ------------- | | -p, --precision <precision> | Set the precision of coordinates.(default is 6 precision or ~10 cm) | 6 | | -e, --extraPrecision <precision> | Set the extra precision for things like the z value when the coordinate is [longitude, latitude, elevation]. (default is 2 precisions ~ 1 cm if in meter unit.) | 2 | | -P, --propertySplit | Split properties to properties file and remove properties from geojson | true | | -i, --noIndex | add index to properties and geom file for flutter mapbox SDK. Default is true. | true | | -V, --version | Output the version number | | | -h, --help | Display help for command | |

other tools

  • geojson-precision - a cli tool to reduce the precision of coordinates in a geojson file. npm, 6yrs old last commit
  • geojson-pick - a cli tool to pick properties from a geojson file. npm, 10yrs old last commit