This function allows the user to modify the data points of a selected load curve.

After selecting a curve in the Select Curve dialog box, then clicking on OK, the Select Option dialog box illustrated in Figure 14.14.6, is displayed, and the curve is displayed in the curve window.

Figure 14.14.6  Select Option dialog box

ADD POINT (MOUSE PICK)

Allows the user to select any location from the graph. The selected point is included in the curve.

ADD POINT (KEY IN X, Y)

Allows the user to add curve data points by keying in the X and Y values.

DELETE POINT

Remove the selected data points.

MODIFY POINT

There are several options to modify data points using the Select Option dialog box illustrated in Figure 14.14.7.

Figure 14.14.7  Modify Point Options

·           INCREMENTAL XY

Enter the X, Y increments, and select OK in the next dialog box.  Select point(s) to move in the curve window.

·           KEY IN XY

Select a point in the curve window.  The X, Y values will be shown in the next dialog box.  Edit the X, Y values, and select OK. The points on the curve are moved to the new coordinates. Repeat to modify another point.

·           NEGATE

Select point(s). The selected point(s) will be flipped about the X-Axis.

·           SCALE

Enter the scale factors, and select OK in the next dialog box. Select point(s). The selected point(s) will move to the scaled coordinates.

·           UNDO LAST CHANGE

Reject the last modification.

EDIT CURVE

This function enables user to modify the X, Y values of the curve. The Edit Curve dialog box is illustrated in Figure 14.14.8.

Figure 14.14.8  Edit Curve dialog box

REDRAW CURVE

This function redraws the modified curve in the display screen.