Instructions for Use
The Draw Line to Modify Line function can adjust the shape of a line object based on a newly drawn line, allowing for quick modification without using Edit Node. It is particularly convenient for local adjustments of complex line objects and is suitable for various application scenarios, such as when office staff modify existing land-type lines based on new boundary lines surveyed in the field, or when revising initial contour lines of curves according to terrain features. This function is only applicable to line layers.
When using this function without selecting a line object, the drawn line must have at least one intersection point snapped to the line to be modified. If the drawn line crosses multiple existing lines, only the line whose intersection point is snapped will be modified. Lines without snapped intersection points will not be modified, as shown below:
Function Entry
- Features Tab -> Feature Editing Gallery Control -> Object Operation Group -> Draw Line to Modify Line.
Operating Steps
- In the Layer Manager, click the edit button of the layer to set the Layer Settings to an editable state.
- In the Object Operation group of the Feature Editing Gallery control under the Features tab, click the Draw Line to Modify Line button to execute the operation.
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When no line object is selected: After clicking Draw Line to Modify Line, move the mouse to the map. The cursor will change to a crosshair, and the prompt "draw a line with at least one intersection point snapped to the line to be modified." appears. You need to draw a line that has at least one snapped intersection point with the target line, then right-click to finish drawing and complete the line modification.
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When a line object is selected: After clicking Draw Line to Modify Line, move the mouse to the map. The cursor will change to a crosshair, and the prompt "draw a line that intersects the selected line." appears. Simply draw a line on the map that intersects the selected line. The program will automatically identify the intersection point, so precise snapping to an intersection point is not required. Right-click to finish drawing and complete the line modification.
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