The Natural Regrade dropdown menu's Edit Longitudinal Profile command gives the user quick access to a powerful longitudinal profile editing tool that can change the entire longitudinal profile of a 3D polyline or just a portion of the profile.
Examples of tasks that this profile editor is well suited for is creating saddles on a long ridge line to further dissect topography and creating a 'hump' on the ridge profile where the user might want to leave excess material.
When the user left-clicks on Edit Longitudinal Profile, the command line directs the user to Select 3D Polyline and the command prompt reads, "Select objects:." The user moves the cursor to the 3D polyline that they wish to edit and left-clicks on the polyline. The "Edit Longitudinal Profile -- Double Click to Adjust Profile" pop-up dialog box appears on the screen. The dialog box has a profile viewer similar to the View Longitudinal Profile command viewer. The user can move the cursor along the profile and the station, elevation, and slope information are displayed along the bottom of the dialog box at the position indicated by the cursor. Simultaneously, an arrow moves along the channel in the drawing locating the point along the longitudinal profile that the cursor is covering.
The dialog box gives the user toggle settings for the following options:
Adjust connecting linework, when toggled on (the default setting) by left-clicking on the box, will cause Natural Regrade to automatically change all connecting linework, e.g., connecting ridges, to smoothly fit the new longitudinal profile. To update contours to reflect the modified surface, the Draw GeoFluv Contours command can be used.
Grid Ticks Only toggle allows the user to see a grid on the profile display or to see only tick marks on the axes.
Radio buttons give the user the following options:
Vertical Exaggeration settings aid the user in evaluating low relief profiles.
Zoom and Pan drag action for the mouse - When set to Zoom, holding the mouse left-click button down while moving it up and down will cause the viewer to zoom in and out on the longitudinal profile. When set to Pan, holding the mouse left-click button down while moving it around the viewer will allow the user to pan around the longitudinal profile. Whether in Zoom mode or Pan mode, the middle mouse button can be held down to pan the profile in the display. Thus, if the user has a middle mouse button, staying in the Zoom mode and using the middle mouse button to pan is most efficient.
A slider button on the Blend 'x'% control allows the user to specify the percentage of the polyline to which they want to apply the profile change. As the user holds down the mouse left-click button on the slider button and moves the slider button left to right, the percentage of the line that will be affected by the edit is displayed above the slider.
When the user has specified the settings that they want to use
for the edit, they move the cursor above or below the longitudinal
profile in the display to the elevation that they want to raise or
lower the profile at that point and double left-click on the mouse.
The profile will raise at that point to the specified elevation and
the line will blend from that elevation to the remaining profile
over the distance specified using the "Blend 'x' %" slider control.
The user can make multiple adjustments to the longitudinal profile
in this fashion until the desired profile is achieved. The user
then left-clicks on the OK button to apply the changes. Left
clicking on the Cancel button will close the dialog box without
applying the changes.
Command
Prompt:
Select objects:
Pulldown Menu Location: Natural Regrade
Keyboard Command: gfEditPro
Prerequisite: Design geofluv