1.1.2 • Published 7 years ago
geojson2postgres v1.1.2
geojson2postgres
Copy a geojson file to PostgreSQL
This package supports both a command line interface as well as a programmable API.
Command Line
To install:
npm install -g geojson2postgres
To run:
geojson2postgres <filename> <args> | psql <db>
args:
--create (-c): drop the database if it exists and recreate it
--file (-f) <filename>: the GeoJSON file to be processed
--tablename (-t) <tablename>: the name of the SQL table to be created (defaults to the name of the GeoJSON file)API
copyToDB(tablename, file, schema, emitRow)
Process a GeoJSON file and generate a PostgreSQL script to insert each feature into a database
Kind: global function
| Param | Type | Description |
|---|---|---|
| tablename | string | Name of table to create in the database (table should not already exist) |
| file | string | Name of the input GeoJSON file |
| schema | Array.<{name: string, type: string}> | The schema of the table to be created. name is a column name and type is the type for that column |
| emitRow | function | A function that takes in a single GeoJSON feature and returns an object where the keys are column names defined in the schema and the values are the values to be entered into each column |
Example
copyToDB({
tablename : 'columbian_municipalities',
file : process.argv[2],
schema : [{name : 'department', type : 'text'}, {name : 'municipality', type : 'text'}],
emitRow : function(feature){
return {
municipality : feature.properties.NOMBRE_MPI,
department : feature.properties.NOMBRE_DPT
};
},
})Where the json file looks something like:
{
"type": "FeatureCollection",
"crs": {
"type": "name",
"properties": {
"name": "urn:ogc:def:crs:OGC:1.3:CRS84"
}
},
"features": [
{
"type": "Feature",
"properties": {
"AREA": 7516765785.590000,
"PERIMETER": 475636.130236,
"WCOLGEN02_": 2,
"WCOLGEN021": 566,
"DPTO": "44",
"NOMBRE_DPT": "LA GUAJIRA",
"MPIO": "847",
"NOMBRE_MPI": "URIBIA",
"NOMBRE_CAB": "URIBIA",
"CLASEMUN": "CM",
"MPIOS": "44847",
"ZONA": "ZONA06",
"OF_REG": "DABAR",
"REG_ZONAS": "DABARZONA06",
"HECTARES": 751676.579000
},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
-71.416042649212045,
11.786808467660752
],
...
[
-71.416042649212045,
11.786808467660752
]
]
]
}
}
]
}