Maptor

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IRI.Maptor.Core.ShapefileFormat

NuGet Target

ESRI shapefile read and write support for the Maptor stack: SHP geometry, SHX index, DBF attributes with code-page-aware text decoding, PRJ coordinate system files, and reprojection on load or save.

Installation

dotnet add package IRI.Maptor.Core.ShapefileFormat

Features

  • Read shapefiles as raw ESRI shapes (Shapefile.ReadShapes/ReadShapesAsync) or as attributed features (Shapefile.ReadAsFeature/ReadAsFeatureAsync returning Feature<Point>)
  • All ESRI shape types: Point, Polyline, Polygon, MultiPoint plus their M and Z variants
  • Write shapefiles from ESRI shapes, Feature<Point> lists, or GeoJSON features (Shapefile.Save, SaveAsShapefile)
  • DBF attribute reading/writing with configurable encodings, FoxPro code-page detection, .cpg file support, and optional Persian (Farsi) character correction
  • PRJ support: TryReadPrjFile/TryGetSrs on read, SaveAsPrj on write
  • Reprojection: Project, ProjectAsync, and ProjectAndSaveAsShapefile between spatial reference systems (SrsBase)
  • SHX index reading and writing
  • Conversion helpers to the native geometry model (AsGeometry), SQL Server WKT (AsSqlServerWkt), and GeoJSON

Usage

Read a shapefile:

using IRI.Maptor.Core.ShapefileFormat;

// raw ESRI shapes
var shapes = await Shapefile.ReadShapesAsync("data/parcels.shp");

foreach (var shape in shapes)
{
    Console.WriteLine(shape.AsSqlServerWkt());
}

// as features with DBF attributes
var features = Shapefile.ReadAsFeature("data/parcels.shp", defaultSrid: 4326);

Write features back to a shapefile:

using IRI.Maptor.Core.ShapefileFormat;

Shapefile.SaveAsShapefile("output/result.shp", features);

Reproject a shapefile on save:

using IRI.Maptor.Core.ShapefileFormat;
using IRI.Maptor.Core.SpatialReferenceSystem.MapProjections;

Shapefile.ProjectAndSaveAsShapefile(
    "data/parcels.shp", "output/parcels-mercator.shp",
    SrsBases.WebMercator, overwrite: true);

Dependencies

  • IRI.Maptor.Core.Common, IRI.Maptor.Core.Ogc, IRI.Maptor.Core.Spatial

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