getPositionFromBrush.RdGet the position of the brushed area on the heatmap image
getPositionFromBrush(brush, ratio = 1)
| brush | The input brush object. Assume |
|---|---|
| ratio | The relative resolution. The value should the ratio between |
A list of length two. The two elements correspons to the coordinates of the two diagonal points.
# There is no example NULL#> NULL