IPC

       Command line: ipc

           Description: replicate points, elevations being calculated by interpolation

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By applying this command, you can determine elevations of a points group by interpolation. The two reference points give level difference through which interpolation is done.

One of the cases this command is useful is the case in which points from a profile can be determined for unmeasured gutter (if and only if longitudinal declivity of road is the same with falling water declivity from gutter). Elevations of points that define gutter can be determined in-group by interpolation through copying between points 2697 and 2688. This example is described in the following figure: