GIS from type DWS to GEOJSON

Thanks for reaching out.

To convert your AutoCAD .dwg file (inside the .7z archive) to GeoJSON, you have two main options:

Option 1: Using QGIS (Free & GUI-based)

1. Download and install QGIS: https://qgis.org.
2. Extract your .7z file to access the .dwg.
3. Open QGIS → Layer → Add Layer → Add Vector Layer → select your .dwg.
4. Once the DWG layers load, right-click the layer → Export → Save Features As.
5. In the dialog:
   • Format: GeoJSON
     • File name: output.geojson
       • CRS: Choose the correct coordinate system.
       1. Click OK to export.

Option 2: Using GDAL (Command-line or C#)

Install GDAL: https://gdal.org.

Command-line example

ogr2ogr -f "GeoJSON" output.geojson input.dwg

C# example using GDAL bindings

using OSGeo.OGR;
using OSGeo.GDAL;

class DWGToGeoJSON
{
    static void Main(string[] args)
    {
        Gdal.AllRegister();
        Ogr.RegisterAll();

        string inputFile = @"C:\path\to\input.dwg";
        string outputFile = @"C:\path\to\output.geojson";

        DataSource ds = Ogr.Open(inputFile, 0);
        if (ds == null)
        {
            Console.WriteLine("Failed to open DWG file.");
            return;
        }

        Driver geoJsonDriver = Ogr.GetDriverByName("GeoJSON");
        if (geoJsonDriver == null)
        {
            Console.WriteLine("GeoJSON driver not available.");
            return;
        }

        DataSource outDs = geoJsonDriver.CreateDataSource(outputFile, null);
        for (int i = 0; i < ds.GetLayerCount(); i++)
        {
            Layer layer = ds.GetLayerByIndex(i);
            outDs.CopyLayer(layer, layer.GetName(), null);
        }

        Console.WriteLine("Conversion completed: " + outputFile);
    }
}

Tip: If your DWG has multiple layers, you may need to export each layer separately.

Let me know if the issue persists after following these steps. I’ll be happy to assist further if needed. If the issue has been resolved, Kindly mark the provided solution as "Accept Answer", so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.