3D-DTM is a terrain modelling program running within the 3D-Win software.

Using 3D-DTM you can triangulate desired data or parts of it. Also, the coding of the original source material is stored in the triangular network, so even cross-sections reveal object and surface details.

Each surface forms a triangular network element of its own that can later be processed separately.

Using area boundaries (e.g. buildings, roads), you can remove selected triangles from the network. By pointing with the mouse or using structure checking functions you can change the structure of a triangular network.

You can also activate only that part of the triangular network that will be involved in subsequent calculations. In this way you can, for example, calculate contour lines for only selected areas of the terrain model.

Contour lines

Contour lines can be calculated at selected intervals of division. Their shape can be smoothed and height readings can automatically be added as text to the file.

Any single contour line can be calculated. This feature makes it possible to find the border of a shore line for example.

Contour lines or curves of equal values can also be calculated based on the values of selected attribute data. .

Volume calculations

Volumes can be calculated in the traditional way from the cross-sections between several surfaces or, alternatively, directly between two combined triangular networks. One method can always be selected according to requirements and used for checking the other. With both methods you can define the border file and the limit value of the volume excavation.

The volumes of all cuts and fills are calculated and stored in a text file.

Cross-sections and profiles

It is possible to calculate the cross-sections along a user-defined line of one or several surfaces and store them as separate elements in a file.

The line can be created as needed and placed in a selected location, and may have intervals of various density.

If the terrain models of several surfaces are being used simultaneously, you can with one calculation, calculate the cross-sections of all selected surfaces and store the results in a single file. Cross-sections can be printed similarly to other maps.

The elevation from a model

You can also calculate point elevations from a triangular network for selected points. Calculating absolute elevations or differences in relation to the triangular network is also possible. The calculated elevation can be stored automatically for the point under comparison.