Description
The Change Coordinate System activity transforms geographic coordinates in a geopoint or geometry column from one Coordinate Reference System (CRS) to another. This is especially useful for aligning geospatial datasets from different sources or preparing data for map rendering, spatial analysis, or export.
Use this activity to:
- Convert latitude/longitude (e.g., EPSG:4326) into projected coordinates (e.g., EPSG:3857) for visualization.
- Standardize geospatial inputs for downstream processing.
- Enable accurate distance or area calculations by converting to a projected CRS.
Use case: If your source data is in WGS84 (EPSG:4326) but your mapping library or spatial operations require Web Mercator (EPSG:3857), use this activity to make the conversion.
- Data – Required. Tabular data with a geopoint or geometry column.
Output
| Output Type | Format | Description |
|---|
| Data | JSON | Transformed data with new coordinates |
Configuration Fields
| Field Name | Description |
|---|
| Geo Column | The column containing latitude and longitude values (e.g., 12.9716,77.5946). |
| Transformed Column Name | The name of the output column where transformed coordinates will be stored. |
| Source CRS | The current CRS of the input data (e.g., EPSG:4326, EPSG:3857). |
| Target CRS | The desired CRS to convert the geopoints into (e.g., EPSG:3857, EPSG:4326). |
| ID | Location |
|---|
| 1 | 12.9716,77.5946 |
| 2 | 34.0522,-118.2437 |
| 3 | 48.8566,2.3522 |
| 4 | 51.5074,-0.1278 |
| 5 | 40.7128,-74.0060 |
Sample Configuration
| Field | Value |
|---|
Geo Column | Location |
Transformed Column Name | New |
Source CRS | EPSG:4326 |
Target CRS | EPSG:3857 |
Sample Output
| ID | Location | New |
|---|
| 1 | 12.9716,77.5946 | 1.4283e+06,1.2873e+06 |
| 2 | 34.0522,-118.2437 | -1.3172e+07,4.0281e+06 |
| 3 | 48.8566,2.3522 | 2.6207e+05,6.2359e+06 |
| 4 | 51.5074,-0.1278 | -1.4215e+04,6.8499e+06 |
| 5 | 40.7128,-74.0060 | -8.2390e+06,4.9786e+06 |
