====== Extrapolate the trajectory ======


===== Icon =====
{{:icon:extrapolation_icon.png?50|}}

===== How it works =====

This option lets you create rows at a given distance around an existing GPS track. The track can be linear or meandering.

The option is only available **when at least one map is loaded in the application**.

===== Application =====

When the option is started, a window opens allowing you to :
  - Select the project to be extrapolated
  - Select the number of rows required
    * If the number of rows is even, the rows will be extrapolated around the original trace (i.e. half a distance on each side of the trace).
    * If the number of rows is odd, the central row will be located on the current trace and the other rows will be located at the distance entered in the parameters.
  - Select the desired inter-row distance

{{ :en:extrapolation_window.png?400 |}}

**Please note**: It's important to simplify the map before extrapolating it, to reduce calculation processing time.

Example of a 3-row extrapolation with 80cm row spacing:
{{ :main_toolbar:extrapolation_example.png?400 |}}

The **E** keyboard shortcut also starts the tool.