By default, pitch is mapped within each Y-axis. Here, with pitch mapped within Y-axis, the first series will get its own pitch mapping, while Series 2 and Series 3 will be mapped onto the same pitch range relative to each other.

If the pitch range goes from the notes C2 to C5, Series 1 will be mapped with its lowest value to C2, and its highest to C5 - taking up the whole pitch range. For the other series, C2 will be mapped to whichever value is lowest among Series 2 and Series 3, and C5 will be mapped to whichever value is highest within both series, so that both series share the same pitch range.

Any mapping parameter, not just pitch, can be mapped within the chart, an axis, or the series.