## plots.plot_trajectory()


Scatter + fitted-curve plot.


Usage


``` python
plots.plot_trajectory(
    df,
    fit,
    y_col,
    weight_col,
    player_name,
    lower_better=False,
    metric_description=None
)
```


`metric_description` is the plain-language expansion of `y_col` (e.g. `"On-base + Slugging"` for OPS). When provided, it's shown parenthetically in the title and used as the y-axis label so viewers don't need to read an acronym table.