1.1.0 • Published 7 years ago
dbgeo v1.1.0
dbgeo
Convert database query results to GeoJSON or TopoJSON. Inspired by Bryan McBride's PHP-Database-GeoJSON. Works with your database of choice - ideally paired with node-mysql, node-postgres, or mongodb. It is a more flexible version of postgeo and mysql2geojson (both deprecated).
Installation
npm install dbgeoExample Usage
var dbgeo = require('dbgeo')
// Query a database...
dbgeo.parse(data, {
outputFormat: 'geojson'
}, function(error, result) {
// This will log a valid GeoJSON FeatureCollection
console.log(result)
});See test/test.js for more examples.
API
.parse(data, options, callback)
data (required)
An array of objects, usually results from a database query.
options (optional)
Configuration object that can contain the following keys:
| argument | description | values | default value |
|---|---|---|---|
geometryType | Format of input geometry | wkb, wkt, geojson, ll | wkb |
geometryColumn | Name of column that contains geometry. If input geometry type is "ll", this is an array in the format ['longitude', 'latitude'] | Any string | geom |
outputFormat | Desired output format | geojson, topojson | geojson |
precision | Trim the coordinate precision of the output to a given number of digits using geojson-precision | Any integer | null (will not trim precision) |
quantization | Value for quantization process, typically specified as powers of ten, see topojson.quantize | Any integer greater than one | null (no quantization) |
callback (required)
A function with two parameters: an error, and a result object.
Examples can be found in test/test.js.
.defaults{}
The default options for .parse(). You can set these before using .parse() if you plan to use the same options continuously.
License
CC0