Convert GML to SHP

Understanding GML and SHP file formats

The GML (Geography Markup Language) is an XML-based format used for expressing geographical features. It is a standard developed by the Open Geospatial Consortium (OGC) and is widely used for sharing geographic data on the web. GML files are text files that describe spatial data and its attributes.

The SHP (Shapefile) format is a popular geospatial vector data format for geographic information system (GIS) software. Developed by Esri, it is used to store the geometric location and attribute information of geographic features. A shapefile is actually a collection of files with the same base name but different extensions, such as .shp, .shx, and .dbf.

How to convert GML to SHP

Converting GML to SHP involves transforming the XML-based geographic data into a format that can be used by GIS applications. This process can be done using various software tools and converters.

Best software for GML to SHP conversion

One of the best tools for converting GML to SHP is GDAL (Geospatial Data Abstraction Library). GDAL is an open-source library for reading and writing raster and vector geospatial data formats. It includes a command-line tool called ogr2ogr that can be used for this conversion.

Using GDAL for conversion

To convert a GML file to a SHP file using GDAL, you can use the following command in the terminal:

ogr2ogr -f "ESRI Shapefile" output.shp input.gml

This command specifies the output format as "ESRI Shapefile" and converts the input GML file to a SHP file.

Alternative software options

Another popular software for GML to SHP conversion is QGIS, a free and open-source GIS application. To convert GML to SHP in QGIS, follow these steps:

• Open QGIS and load your GML file using Layer → Add Layer → Add Vector Layer.
• Right-click on the loaded layer and select Export → Save Features As....
• Choose "ESRI Shapefile" as the format and specify the output file name.
• Click OK to perform the conversion.