This node transforms the Coordinate reference system (CRS) of the selected geometry column to the entered new coordinate reference system. The node will transform the points in all objects individually. It has no notion of projecting entire geometries. All segments joining points are assumed to be lines in the current projection, not geodesics. Objects crossing the dateline (or other projection boundary) will have undesirable behavior.
The node is based on the GeoPandas project and uses the following related information and functions:
Select the geometry column to use
Enter the Coordinate reference system (CRS) to use.
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) and 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 these regions, such as epsg:4269 (NAD83, Unit: degree) and epsg:26918 (NAD83 18N, Unit: meter) for North America, and epsg:4490 (CGCS2000, Unit: degree) and epsg:4479 (CGCS2000, Unit: meter) for China.
The input field supports the following input types:
Select the geometry column to use.
Enter the Coordinate reference system (CRS) to use. The input field supports the following types:
Common EPSG codes that can be universally used for mapping coordinates everywhere in the world are:
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.
Group of settings that define the format of the result table.
Choose where to place the result column:
The name of the new column that is appended if 'Append' is selected.
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