# Canopy Area - Move Partial Line

Using the "Move partial line" function, a segment of a canopy-area line—or an entire line—can be moved. The two adjacent lines of the same canopy area are then never extended or shortened; instead, new line segments are always created as connections to the moved segment. The moved line may have a different length than the originally selected segment. In that case, new oblique lines are generated. The resulting roof-area piece will then be one-sidedly oblique or trapezoidal.

For this function, first select the line from which a portion is to be moved. Then select two points that define the area to be moved. You may use all usual snap and input functions for this. The points do not have to lie on the line; they can be chosen anywhere. Each selected point is then projected onto the chosen line. For the second point, using the arrow key is also convenient when the line appears exactly horizontal or vertical on the screen. You can then simply enter a distance from the first point.

If you actually want to move the entire line (see note in the chapter 'Move Line'), select the start and end points of the line.

Next specify the length of the partial line. The default displays the length of the selected partial line. If you change this value, the partial line receives a new length and the laterally adjacent lines become oblique.

Next, the selected line can be moved graphically and placed at the desired location. All snapping and input functions are available during this operation. When moving, lines may be shifted only perpendicular to their original position. If the line must also be displaced in the X direction, a displacement can be entered later.

After placing the line, a dialog box opens in which you can correct the position of the line once more. When any number is changed, the other numbers adjust automatically if necessary.

**Shift within the roof surface:** This value shows the distance of the new line to the old one, measured along the slope of the surface.

**Displacement in base Y:** This shows the displacement in plan from the old position to the new position of the line.

**Vertical displacement:** This value indicates the height difference between the old and the new position of the line.

**Elevation of the line:** This field displays the absolute elevation of the new line, measured from global 0.

**Displacement in X direction:** Here the moved partial line can be shifted longitudinally (parallel). A value of 0.000 leaves it exactly as after the graphical move. If the new partial line is shorter than the original partial line, this produces a uniform trapezoid. The red arrows indicate the positive slider direction. Using negative values you can shift in the opposite direction.
