Koordinaatühend

Koordinaatühend is an Estonian term that translates to "coordinate connection" or "coordinate link". It generally refers to the establishment or maintenance of a connection between different coordinate systems. This can occur in various contexts, most notably in surveying, cartography, and geographical information systems (GIS).

In surveying, koordinaatühend might involve transforming measurements from a local, temporary coordinate system to a national or global one. This ensures that data collected in different locations or at different times can be accurately integrated and compared. For instance, if a new construction project uses its own local grid, koordinaatühend would be necessary to relate these points to the official Estonian coordinate system (like L-EST97).

In cartography and GIS, koordinaatühend is fundamental for creating maps and analyzing spatial data. It allows for the overlaying and merging of datasets that may have originated in different projections or datums. Without proper koordinaatühend, different layers of information, such as road networks, property boundaries, and elevation models, would not align correctly, rendering them useless for spatial analysis or accurate representation. The process often involves mathematical transformations like translations, rotations, and scaling to bridge the gaps between coordinate systems.