# Article

**Keywords:**

nonlinear regression; mathematical modelling; visualisation; vector field; Maple

**Summary:**

The slope shape is replaced by a 3D regression function which corresponds with high precision to the position of several hundred points which were determined on the surface of the slope body. The position of several points was repeatedly measured for several years. The time changes in the position of these points were used to create regression functions that describe vertical movements, {\em slope settlement} and horizontal movements, {\em slope movement}. The model results are presented in the form of mathematical relationships and visualized in the program Maple environment.