如何迭代node.js中的shapefile

我有以下node.js代码读取基于（ https://github.com/mbostock/shapefile ）代码的shapefile，

var shp=require('shapefile'); var path="polygons.shp" var encoding="utf8" function readRecords(path, encoding) { return function() { var callback = this.callback; shp.read(path, encoding, function(error, header, records) { callback(error, records); }); }; }; var rs = readRecords(path,encoding) console.log(rs) 

当我执行上面的代码时，我得到：undefined

任何想法如何迭代这样的对象？

Answer 1

在阅读logging之前，您需要阅读标题。 这一点代码将整个shapefilelogging到控制台：

 var shapefile = require( 'shapefile' ), reader = shapefile.reader( 'polygons' ); var logger = function( error, record ) { console.log( record ); if( record !== shapefile.end ) reader.readRecord( logger ); } reader.readHeader( logger );