You can use the lasso tool to select points that fall in an irregularly shaped area. Any points marked in the data table as hidden are not selected. See Hide Rows in Data Tables.
To select points within an irregularly shaped area, follow these steps:
1. Click the lasso tool in the toolbar.
2. Click and hold the lasso tool in a plot.
Note: To keep all points selected as you drag the lasso around several sets of points, press Shift before you click in the plot.
3. Drag the lasso around any set of points.
Figure 9.21 Using the Lasso ToolÂ
4. Release the mouse. JMP automatically closes the lasso and highlights the points within the enclosed area.