# Map View Coordinate Picking

Once a borehole has coordinates and a coordinate system, GeoDin can display it on a map and let you adjust the location interactively. The map view also supports the reverse workflow — clicking on the map to capture coordinates into a new or existing object.

For configuring the coordinate system itself (EPSG codes, the `G1_EPSG.GSD` dictionary, and in-mask transformations), see [Coordinate Systems and EPSG](/maps/coordinate-systems-and-epsg.md).

## Displaying a borehole on the map

Once coordinates and a coordinate system are entered, a borehole can be displayed on a map via the **map preview** button in the right-hand ribbon.

## Picking coordinates by clicking

The map view supports picking coordinates by clicking. The **Draw** tool lets users click on the map to capture local easting / northing values back into the coordinate fields. This is useful for establishing **tentative borehole locations** before precise survey data is available.

The **Cross-section** method also includes a top-down map view for spatially selecting boreholes — use drag-rectangle selection to pull all objects in an area into the cross-section workflow.


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