Create contours


Drawing|Terrain||Contour  

Contour lines will be created from a DTM or a point cloud with a selected interval. It is possible to split the elevations into separate layers for different levels. There are also various ways to smooth out the contours.

Topocad - Create contour lines

Model
Select the DTM/point cloud you want to create the contour lines from. By clicking on the drop-down arrow you can choose from the DTMs currently listed in the DTM manager. By clicking on the Browse button you can choose from all of the stored digital terrain models.

Interval
Enter a value for the interval you want to use to create the contour lines.

Plane interval
Determines  how close  it is between  points  in the  point  cloud.  (1.000  =  1 m) The distance  is important  to get  good contour lines  and  should  be  slightly larger than  an  overall  distance  of the  point  cloud.

Smooth contours
There are four ways to smooth out the contours. Three involve creating splines and one uses the radius. If using the radius you need to enter a factor. Anything between 50 and 400 is acceptable.

Layers

Topocad - Create contours - Layers

Default layer
You can select a default layer which is used for any elevation that does not have a specific layer.

Interval/Layer
Define which elevations are to be moved to a specific layer and name each layer. It is possible to use the default elevations and layer names.

Text

Topocad - Create contours - Layers

This command allows you to place text on the contour lines. Text is displayed at a specified interval along the contour line. Text can be placed either on or above the line.

See also

Text on contours
Create DTM
Modify DTM.