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    verrazzano

    2.2.3 • Public • Published

    Streaming geospatial format conversion

    verrazzano NPM version Downloads Build Status

    Install

    npm install verrazzano --save
    

    Supported Formats

    Parsing

    • SHP
    • GDB
    • GPX
    • KML
    • KMZ
    • GeoJSON

    Creation

    • SHP
    • GPX (Partial)
    • KML
    • KMZ
    • GeoJSON

    API

    from(format)

    Returns a stream. Input is the file content. Output is GeoJSON Feature objects.

    to(format)

    Returns a stream. Input is GeoJSON Feature objects. Output is the file content.

    Example

    import fs from 'graceful-fs'
    import geo from 'verrazzano'
    
    // SHP -> GeoJSON Feature objects
    fs.createReadStream('zones.shp')
      .pipe(geo.from('shp'))
      .pipe(through2.obj((feat, _, cb) => {
        // Do whatever you want with it here!
        cb(null, feat)
      }))
    
    // SHP -> GeoJSON FeatureCollection
    fs.createReadStream('zones.shp')
      .pipe(geo.from('shp'))
      .pipe(geo.to('geojson'))
      .pipe(fs.createWriteStream('zones.geojson'))
    
    // GeoJSON FeatureCollection -> SHP
    fs.createReadStream('zones.geojson')
      .pipe(geo.from('geojson'))
      .pipe(geo.to('shp'))
      .pipe(fs.createWriteStream('zones.shp'))
    
    // SHP -> KML
    fs.createReadStream('zones.shp')
      .pipe(geo.from('shp'))
      .pipe(geo.to('kml'))
      .pipe(fs.createWriteStream('zones.kml'))

    Limitations

    • For zip-based geospatial formats it is not possible to operate on these in a streaming/memory efficient way (the manifest for a zip is stored at the end of the file). In these cases, a temporary file will be used for the duration of the stream.
    • In some cases where GDAL needs to be used, a temporary file will be used. Over time we will replace GDAL with pure JS parsers.

    Install

    npm i verrazzano

    DownloadsWeekly Downloads

    6

    Version

    2.2.3

    License

    MIT

    Unpacked Size

    27.6 kB

    Total Files

    25

    Last publish

    Collaborators

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