Columns

A dataframe has columns. At minimum a geometry column.

The column object

GeoDataFrameColumn

Properties:

name:String: the name of the column dtype:GeoDataFrameColumnType: the internal type of the column: see the types section for details type:Type: the dart type the column’s data indice:int: the column indice for the data. Mostly for internal usage

Constructors

GeoDataFrameColumn.fromGeoJsonGeometry

Build a column from parsed geojson objects

Positional parameters:

geometry:dynamic: a geojson geometry: either a GeoJsonPoint , a GeoJsonMultiPoint or a GeoJsonLine columnName:String: the name of the column

final col = GeoDataFrameColumn.fromGeoJsonGeometry(someGeoJsonObject, "myline");
print(col.dtype);
print(col.type);

GeoDataFrameColumn.inferFromDataPoint

Build a column with types infered from a datapoint

Positional parameters:

dataPoint:dynamic: a sample of the data to check to infer types columnName:String: the name of the column