The Modify Curves panel enables you to modify curve data pertaining to a plot. Click the Modify Curves button, 
, on the plot toolbar to display the panel.
Modify Curves panel.
Curves can be deleted, trimmed, bridged, or hidden within a specified range and orientation.
Option
|
Description
|
Delete/Shift
|
Removes the data within the selected range and closes any gap created by this action.
|
Delete
|
Removes the data within the selected range without closing any gaps created by this action. Delete can only be used at the beginning or end of the curve.
|
Trim
|
Removes the data outside of the selected range.
|
Bridge
|
Bridges the curve linearly across the selected range. This replaces the data in the selected range with a straight line on a point by point basis.
|
Hide
|
Turns off curve points within the selected range, but does not remove any gaps created by this action.
|
Replace
|
Enter an expression in the Replace with Expression text box and use x and y as variables for the selected range. Click Replace to replace the points in the selected range with the expression.
|
You can also replace curve points (on a point by point basis) within a specified range with an expression.
Modified vectors are changed to type 'values'.
Show Edits displays all edits that the selected curves have in common. Edits can be renamed or deleted. You can undo the last edit performed. By default, the edit is named using the parameters, action, and range. For example, if you selected a horizontal parameter and cut a curve within the range 1-4, the default edit name would be:
HORIZ_CUT1-4.
| 1. | From the Modify Curves panel, click Curves. |
The Select Curves dialog is displayed.
| 2. | Select a curve from the list. |
Or
| • | Click All to select every curve in the list. |
Or
| • | Click None to deselect all highlighted curves in the list. |
| • | Click Flip to exchange the currently selected curves for the unselected curves in the list. |
Or
| 1. | Pick a curve from the window. This overwrites any existing curve selections. |
| 2. | Hold down the CTRL key to pick more than one curve from the window. |
Or
| • | Type in a curve reference into the Curves text field. |
| Note | If the curve you select is valid, the text field turns gray. If it is not a valid curve, an error message is displayed. |
|
| • | Under Edit Parameters, select Horizontal axis or Vertical axis. |
The range bars are updated on the screen.
|
| • | Snap forces the Range values to be existing points on the selected curve. Move the range bars on the screen to find the curve point. |
Or
| • | Use the arrows to increase or decrease the From and To values. The From and To values are restricted to the curve point. |
| Note | Entering range values directly into the From and To fields is not allowed when Snap is turned on. The From and To values are restricted to the curve point. |
| • | Enter range values in the From and To fields. |
Or
| • | Use the arrows to increase or decrease the From and To values. The value listed in the Step field is the amount by which the From and To values are increased when you use the arrows. |
| Note | The From and To values are not restricted to the curve point. |
Or
| • | Select and drag a range bar on the screen in either case. |
|
| 1. | Select one or more curves to modify. |
| 2. | Define the range of the curves to modify. |
| 3. | Under Action, click Delete/Shift, Delete, Trim, Bridge, or Hide. |
Option
|
Description
|
Delete/Shift
|
Removes the data within the selected range and closes any gap created by this action.
|
Delete
|
Removes the data within the selected range without closing any gaps created by this action. Delete can only be used at the beginning or end of the curve.
|
Trim
|
Removes the data outside of the selected range.
|
Bridge
|
Bridges the curve linearly across the selected range.
|
Hide
|
Turns off curve points within the selected range, but does not remove gaps created by this action.
|
| 4. | If Interpolate is turned on, a point is inserted using the From or To values and performs the action. |
If Interpolate is turned off, the closest point is found for the selected curves based on the From/To values and performs the action.
Or
| 5. | Enter an expression in the Replace with Expression text box. |
| 6. | Use x and y as variables for the selected range. |
The expression replaces the points in the selected range.
For example, -y will flip all points in the selected range about the x-axis. y+1 will move the selected range up by 1 (assuming a horizontal range is selected).
|
| 2. | Select an edit from the list. |
The edit is removed from the list.
The curve is returned to its pre-edited state and the effect of the edit is removed.
| 4. | Click Close to exit the Curve Edit dialog. |
|
| 2. | Select an edit from the list. |
The edit is displayed in the text field.
| 3. | Highlight the edit in the text field. |
| 4. | Type in a new name and press ENTER. |
The edit is renamed.
| 5. | Click Close to exit the Curve Edit dialog. |
|
| • | Click Undo after performing an edit. |
The curve is restored to its previous state.
|
See Also:
Define Curves
