LINE STEP BEFORE
Description:
Produces a piece-wise constant function (a step function) consisting of alternating horizontal and vertical lines.
The y-value changes at the midpoint of each pair of adjacent x-values..
Example
| A | B | |
| 1 | Row | People |
| 2 | Row1 | 4 |
| 3 | Row2 | 7 |
| 4 | Row3 | 12 |
| 5 | Row4 | 17 |
| 6 | Row5 | 36 |
| 7 | Row6 | 34 |
