WKT to Geometry

This node converts the selected Well-known-text (WKT) input column to a geometry column in the units of the provided CRS.

The node is based on the GeoPandas project and uses the following related information and functions:


WKT column

Well-known-text (WKT) column to convert


Enter the Coordinate reference system (CRS) to use. The input field supports the following types:

  • An authority string (i.e. 'epsg:4326')
  • An EPSG code (i.e. 4326)
  • CRS WKT string

Common EPSG codes that can be universally used for mapping coordinates everywhere in the world are:

  • epsg:4326 (WGS 84, Unit: degree): Latitude/longitude coordinate system based on the Earth's center of mass; Used by the Global Positioning System among others. This is also the default projection that the geospatial nodes use if not otherwise specified.
  • epsg:3857 (Unit: meter): Web Mercator projection used by many web-based mapping tools, including Google Maps and OpenStreetMap.

There are EPSG codes for specific regions that provide a higher accuracy in the corresponding regions:

For a selection of projections that preserve different properties see this Wikipedia article. Once you have found the appropriate projection name or coordinate reference system you can search for its EPSG code at https://epsg.io/. To do so simply type the projection name into the search field (e.g. Pseudo-Mercator). The result page will show you the EPSG code that you can enter in this field (e.g. EPSG:3857) but also the distance unit e.g. meter or degree and the area of use where the projection works best.

If you are looking for a projection for a specific area, try out the Projection wizard page which suggests projection with specific properties for a defined area on the globe. Once you have found the appropriate projection simply click on the WKT link next to the suggested projection name, copy it to your clipboard and paste it into this field.

Input Ports


Input table to append the generated geometry column to.

Output Ports


Input table with additional geometry column in the units of the provided CRS.

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