Calculate gradients and then draws them in the row of the profile table. Text height and width can be chosen from Longitudinal Profile Tab - Table Data for drawing text in longitudinal profiles or from Cross Profile Tab - Data table for drawing text in cross profiles. The unit of measurement for the gradients as well as the number of decimals can be chosen from the Unit Tab - Units of gradients. Texts and lines are drawn with the current used parameters in the drawing for layer and color.
The command is useful to complete the row of designed gradients or slopes. You can apply this command after drawing the projected line (red line) in the profile.
Calculation is made for a polyline and to determining the position of the row in the table it requires to select two points, one above and one below. If the polyline contains arcs then its are ignored.