# Coordinates & key types

The value types used as grove keys: the stranded `GenomicCoordinate`, the integer
point key `Numeric`, and the 2-bit DNA k-mer key `Kmer`. See the
{doc}`User Guide </guide/data_types>` for semantics and usage.

```{eval-rst}
.. autoclass:: pygenogrove.GenomicCoordinate
.. autoclass:: pygenogrove.Numeric
.. autoclass:: pygenogrove.Kmer
```